diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ea1893d15a..eff6becacb 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -178,7 +178,6 @@ After you have ensured this site is distributing its content legally, you can fo
 1. Start with this simple template and save it to `yt_dlp/extractor/yourextractor.py`:
 
     ```python
-    # coding: utf-8
     from .common import InfoExtractor
     
     
diff --git a/devscripts/bash-completion.py b/devscripts/bash-completion.py
index 46b4b2ff55..23a9a5781d 100755
--- a/devscripts/bash-completion.py
+++ b/devscripts/bash-completion.py
@@ -1,11 +1,9 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import os
 from os.path import dirname as dirn
 import sys
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 import yt_dlp
 
 BASH_COMPLETION_FILE = "completions/bash/yt-dlp"
diff --git a/devscripts/check-porn.py b/devscripts/check-porn.py
index 50f6bebc64..6188f68ec7 100644
--- a/devscripts/check-porn.py
+++ b/devscripts/check-porn.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 """
 This script employs a VERY basic heuristic ('porn' in webpage.lower()) to check
 if we are not 'age_limit' tagging some porn site
@@ -29,7 +27,7 @@ for test in gettestcases():
         try:
             webpage = compat_urllib_request.urlopen(test['url'], timeout=10).read()
         except Exception:
-            print('\nFail: {0}'.format(test['name']))
+            print('\nFail: {}'.format(test['name']))
             continue
 
         webpage = webpage.decode('utf8', 'replace')
@@ -39,7 +37,7 @@ for test in gettestcases():
     elif METHOD == 'LIST':
         domain = compat_urllib_parse_urlparse(test['url']).netloc
         if not domain:
-            print('\nFail: {0}'.format(test['name']))
+            print('\nFail: {}'.format(test['name']))
             continue
         domain = '.'.join(domain.split('.')[-2:])
 
@@ -47,11 +45,11 @@ for test in gettestcases():
 
     if RESULT and ('info_dict' not in test or 'age_limit' not in test['info_dict']
                    or test['info_dict']['age_limit'] != 18):
-        print('\nPotential missing age_limit check: {0}'.format(test['name']))
+        print('\nPotential missing age_limit check: {}'.format(test['name']))
 
     elif not RESULT and ('info_dict' in test and 'age_limit' in test['info_dict']
                          and test['info_dict']['age_limit'] == 18):
-        print('\nPotential false negative: {0}'.format(test['name']))
+        print('\nPotential false negative: {}'.format(test['name']))
 
     else:
         sys.stdout.write('.')
diff --git a/devscripts/fish-completion.py b/devscripts/fish-completion.py
index fb45e02805..d958a5d6bc 100755
--- a/devscripts/fish-completion.py
+++ b/devscripts/fish-completion.py
@@ -1,12 +1,10 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import optparse
 import os
 from os.path import dirname as dirn
 import sys
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 import yt_dlp
 from yt_dlp.utils import shell_quote
 
diff --git a/devscripts/generate_aes_testdata.py b/devscripts/generate_aes_testdata.py
index 0979eee5b9..308c74a204 100644
--- a/devscripts/generate_aes_testdata.py
+++ b/devscripts/generate_aes_testdata.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import codecs
 import subprocess
 
diff --git a/devscripts/lazy_load_template.py b/devscripts/lazy_load_template.py
index da89e070de..0058915ae8 100644
--- a/devscripts/lazy_load_template.py
+++ b/devscripts/lazy_load_template.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import re
 
 from ..utils import bug_reports_message, write_string
diff --git a/devscripts/make_contributing.py b/devscripts/make_contributing.py
index 6b1b8219c4..2562c4fd75 100755
--- a/devscripts/make_contributing.py
+++ b/devscripts/make_contributing.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
-import io
 import optparse
 import re
 
@@ -16,7 +13,7 @@ def main():
 
     infile, outfile = args
 
-    with io.open(infile, encoding='utf-8') as inf:
+    with open(infile, encoding='utf-8') as inf:
         readme = inf.read()
 
     bug_text = re.search(
@@ -26,7 +23,7 @@ def main():
 
     out = bug_text + dev_text
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
+    with open(outfile, 'w', encoding='utf-8') as outf:
         outf.write(out)
 
 
diff --git a/devscripts/make_issue_template.py b/devscripts/make_issue_template.py
index 9020592317..878b94166a 100644
--- a/devscripts/make_issue_template.py
+++ b/devscripts/make_issue_template.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import io
 import optparse
 
@@ -13,7 +11,7 @@ def main():
 
     infile, outfile = args
 
-    with io.open(infile, encoding='utf-8') as inf:
+    with open(infile, encoding='utf-8') as inf:
         issue_template_tmpl = inf.read()
 
     # Get the version from yt_dlp/version.py without importing the package
@@ -22,8 +20,9 @@ def main():
 
     out = issue_template_tmpl % {'version': locals()['__version__']}
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
+    with open(outfile, 'w', encoding='utf-8') as outf:
         outf.write(out)
 
+
 if __name__ == '__main__':
     main()
diff --git a/devscripts/make_lazy_extractors.py b/devscripts/make_lazy_extractors.py
index b58fb85e35..24e8cfa5b8 100644
--- a/devscripts/make_lazy_extractors.py
+++ b/devscripts/make_lazy_extractors.py
@@ -1,13 +1,10 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals, print_function
-
 from inspect import getsource
-import io
 import os
 from os.path import dirname as dirn
 import sys
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 
 lazy_extractors_filename = sys.argv[1] if len(sys.argv) > 1 else 'yt_dlp/extractor/lazy_extractors.py'
 if os.path.exists(lazy_extractors_filename):
@@ -25,7 +22,7 @@ from yt_dlp.extractor.common import InfoExtractor, SearchInfoExtractor
 if os.path.exists(plugins_blocked_dirname):
     os.rename(plugins_blocked_dirname, plugins_dirname)
 
-with open('devscripts/lazy_load_template.py', 'rt') as f:
+with open('devscripts/lazy_load_template.py') as f:
     module_template = f.read()
 
 CLASS_PROPERTIES = ['ie_key', 'working', '_match_valid_url', 'suitable', '_match_id', 'get_temp_id']
@@ -72,7 +69,7 @@ classes = _ALL_CLASSES[:-1]
 ordered_cls = []
 while classes:
     for c in classes[:]:
-        bases = set(c.__bases__) - set((object, InfoExtractor, SearchInfoExtractor))
+        bases = set(c.__bases__) - {object, InfoExtractor, SearchInfoExtractor}
         stop = False
         for b in bases:
             if b not in classes and b not in ordered_cls:
@@ -97,9 +94,9 @@ for ie in ordered_cls:
         names.append(name)
 
 module_contents.append(
-    '\n_ALL_CLASSES = [{0}]'.format(', '.join(names)))
+    '\n_ALL_CLASSES = [{}]'.format(', '.join(names)))
 
 module_src = '\n'.join(module_contents) + '\n'
 
-with io.open(lazy_extractors_filename, 'wt', encoding='utf-8') as f:
+with open(lazy_extractors_filename, 'wt', encoding='utf-8') as f:
     f.write(module_src)
diff --git a/devscripts/make_readme.py b/devscripts/make_readme.py
index 3f56af7447..5d85bcc63a 100755
--- a/devscripts/make_readme.py
+++ b/devscripts/make_readme.py
@@ -2,10 +2,6 @@
 
 # yt-dlp --help | make_readme.py
 # This must be run in a console of correct width
-
-from __future__ import unicode_literals
-
-import io
 import sys
 import re
 
@@ -15,7 +11,7 @@ helptext = sys.stdin.read()
 if isinstance(helptext, bytes):
     helptext = helptext.decode('utf-8')
 
-with io.open(README_FILE, encoding='utf-8') as f:
+with open(README_FILE, encoding='utf-8') as f:
     oldreadme = f.read()
 
 header = oldreadme[:oldreadme.index('## General Options:')]
@@ -25,7 +21,7 @@ options = helptext[helptext.index('  General Options:'):]
 options = re.sub(r'(?m)^  (\w.+)$', r'## \1', options)
 options = options + '\n'
 
-with io.open(README_FILE, 'w', encoding='utf-8') as f:
+with open(README_FILE, 'w', encoding='utf-8') as f:
     f.write(header)
     f.write(options)
     f.write(footer)
diff --git a/devscripts/make_supportedsites.py b/devscripts/make_supportedsites.py
index 729f60a0e7..26d25704ea 100644
--- a/devscripts/make_supportedsites.py
+++ b/devscripts/make_supportedsites.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
-import io
 import optparse
 import os
 import sys
@@ -23,11 +20,11 @@ def main():
 
     def gen_ies_md(ies):
         for ie in ies:
-            ie_md = '**{0}**'.format(ie.IE_NAME)
+            ie_md = f'**{ie.IE_NAME}**'
             if ie.IE_DESC is False:
                 continue
             if ie.IE_DESC is not None:
-                ie_md += ': {0}'.format(ie.IE_DESC)
+                ie_md += f': {ie.IE_DESC}'
             search_key = getattr(ie, 'SEARCH_KEY', None)
             if search_key is not None:
                 ie_md += f'; "{ie.SEARCH_KEY}:" prefix'
@@ -40,7 +37,7 @@ def main():
         ' - ' + md + '\n'
         for md in gen_ies_md(ies))
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
+    with open(outfile, 'w', encoding='utf-8') as outf:
         outf.write(out)
 
 
diff --git a/devscripts/prepare_manpage.py b/devscripts/prepare_manpage.py
index 29c675f8ae..91e9ebcedc 100644
--- a/devscripts/prepare_manpage.py
+++ b/devscripts/prepare_manpage.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
-import io
 import optparse
 import os.path
 import re
@@ -32,14 +29,14 @@ def main():
 
     outfile, = args
 
-    with io.open(README_FILE, encoding='utf-8') as f:
+    with open(README_FILE, encoding='utf-8') as f:
         readme = f.read()
 
     readme = filter_excluded_sections(readme)
     readme = move_sections(readme)
     readme = filter_options(readme)
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
+    with open(outfile, 'w', encoding='utf-8') as outf:
         outf.write(PREFIX + readme)
 
 
diff --git a/devscripts/update-formulae.py b/devscripts/update-formulae.py
index 41bc1ac7a3..3a0bef52e5 100644
--- a/devscripts/update-formulae.py
+++ b/devscripts/update-formulae.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import json
 import os
 import re
@@ -27,7 +25,7 @@ tarball_file = next(x for x in pypi_release['urls'] if x['filename'].endswith('.
 sha256sum = tarball_file['digests']['sha256']
 url = tarball_file['url']
 
-with open(filename, 'r') as r:
+with open(filename) as r:
     formulae_text = r.read()
 
 formulae_text = re.sub(r'sha256 "[0-9a-f]*?"', 'sha256 "%s"' % sha256sum, formulae_text)
diff --git a/devscripts/update-version.py b/devscripts/update-version.py
index 0ee7bf2916..233cdaa76a 100644
--- a/devscripts/update-version.py
+++ b/devscripts/update-version.py
@@ -4,7 +4,7 @@ import sys
 import subprocess
 
 
-with open('yt_dlp/version.py', 'rt') as f:
+with open('yt_dlp/version.py') as f:
     exec(compile(f.read(), 'yt_dlp/version.py', 'exec'))
 old_version = locals()['__version__']
 
diff --git a/devscripts/zsh-completion.py b/devscripts/zsh-completion.py
index 780df0de6c..677fe7373d 100755
--- a/devscripts/zsh-completion.py
+++ b/devscripts/zsh-completion.py
@@ -1,11 +1,9 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import os
 from os.path import dirname as dirn
 import sys
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 import yt_dlp
 
 ZSH_COMPLETION_FILE = "completions/zsh/_yt-dlp"
diff --git a/pyinst.py b/pyinst.py
index e5934e04f0..1f72bd4be5 100644
--- a/pyinst.py
+++ b/pyinst.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
 import os
 import platform
 import sys
diff --git a/setup.py b/setup.py
index 503599c761..9eab7f1d7d 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
 import os.path
 import warnings
 import sys
diff --git a/test/helper.py b/test/helper.py
index 804e954a3b..d940e327cf 100644
--- a/test/helper.py
+++ b/test/helper.py
@@ -1,7 +1,4 @@
-from __future__ import unicode_literals
-
 import errno
-import io
 import hashlib
 import json
 import os.path
@@ -35,10 +32,10 @@ def get_params(override=None):
                                    'parameters.json')
     LOCAL_PARAMETERS_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                          'local_parameters.json')
-    with io.open(PARAMETERS_FILE, encoding='utf-8') as pf:
+    with open(PARAMETERS_FILE, encoding='utf-8') as pf:
         parameters = json.load(pf)
     if os.path.exists(LOCAL_PARAMETERS_FILE):
-        with io.open(LOCAL_PARAMETERS_FILE, encoding='utf-8') as pf:
+        with open(LOCAL_PARAMETERS_FILE, encoding='utf-8') as pf:
             parameters.update(json.load(pf))
     if override:
         parameters.update(override)
@@ -63,7 +60,7 @@ def report_warning(message):
         _msg_header = '\033[0;33mWARNING:\033[0m'
     else:
         _msg_header = 'WARNING:'
-    output = '%s %s\n' % (_msg_header, message)
+    output = f'{_msg_header} {message}\n'
     if 'b' in getattr(sys.stderr, 'mode', ''):
         output = output.encode(preferredencoding())
     sys.stderr.write(output)
@@ -74,7 +71,7 @@ class FakeYDL(YoutubeDL):
         # Different instances of the downloader can't share the same dictionary
         # some test set the "sublang" parameter, which would break the md5 checks.
         params = get_params(override=override)
-        super(FakeYDL, self).__init__(params, auto_init=False)
+        super().__init__(params, auto_init=False)
         self.result = []
 
     def to_screen(self, s, skip_eol=None):
@@ -99,8 +96,7 @@ class FakeYDL(YoutubeDL):
 
 def gettestcases(include_onlymatching=False):
     for ie in yt_dlp.extractor.gen_extractors():
-        for tc in ie.get_testcases(include_onlymatching):
-            yield tc
+        yield from ie.get_testcases(include_onlymatching)
 
 
 md5 = lambda s: hashlib.md5(s.encode('utf-8')).hexdigest()
@@ -113,33 +109,30 @@ def expect_value(self, got, expected, field):
 
         self.assertTrue(
             isinstance(got, compat_str),
-            'Expected a %s object, but got %s for field %s' % (
-                compat_str.__name__, type(got).__name__, field))
+            f'Expected a {compat_str.__name__} object, but got {type(got).__name__} for field {field}')
         self.assertTrue(
             match_rex.match(got),
-            'field %s (value: %r) should match %r' % (field, got, match_str))
+            f'field {field} (value: {got!r}) should match {match_str!r}')
     elif isinstance(expected, compat_str) and expected.startswith('startswith:'):
         start_str = expected[len('startswith:'):]
         self.assertTrue(
             isinstance(got, compat_str),
-            'Expected a %s object, but got %s for field %s' % (
-                compat_str.__name__, type(got).__name__, field))
+            f'Expected a {compat_str.__name__} object, but got {type(got).__name__} for field {field}')
         self.assertTrue(
             got.startswith(start_str),
-            'field %s (value: %r) should start with %r' % (field, got, start_str))
+            f'field {field} (value: {got!r}) should start with {start_str!r}')
     elif isinstance(expected, compat_str) and expected.startswith('contains:'):
         contains_str = expected[len('contains:'):]
         self.assertTrue(
             isinstance(got, compat_str),
-            'Expected a %s object, but got %s for field %s' % (
-                compat_str.__name__, type(got).__name__, field))
+            f'Expected a {compat_str.__name__} object, but got {type(got).__name__} for field {field}')
         self.assertTrue(
             contains_str in got,
-            'field %s (value: %r) should contain %r' % (field, got, contains_str))
+            f'field {field} (value: {got!r}) should contain {contains_str!r}')
     elif isinstance(expected, type):
         self.assertTrue(
             isinstance(got, expected),
-            'Expected type %r for field %s, but got value %r of type %r' % (expected, field, got, type(got)))
+            f'Expected type {expected!r} for field {field}, but got value {got!r} of type {type(got)!r}')
     elif isinstance(expected, dict) and isinstance(got, dict):
         expect_dict(self, got, expected)
     elif isinstance(expected, list) and isinstance(got, list):
@@ -159,13 +152,12 @@ def expect_value(self, got, expected, field):
         if isinstance(expected, compat_str) and expected.startswith('md5:'):
             self.assertTrue(
                 isinstance(got, compat_str),
-                'Expected field %s to be a unicode object, but got value %r of type %r' % (field, got, type(got)))
+                f'Expected field {field} to be a unicode object, but got value {got!r} of type {type(got)!r}')
             got = 'md5:' + md5(got)
         elif isinstance(expected, compat_str) and re.match(r'^(?:min|max)?count:\d+', expected):
             self.assertTrue(
                 isinstance(got, (list, dict)),
-                'Expected field %s to be a list or a dict, but it is of type %s' % (
-                    field, type(got).__name__))
+                f'Expected field {field} to be a list or a dict, but it is of type {type(got).__name__}')
             op, _, expected_num = expected.partition(':')
             expected_num = int(expected_num)
             if op == 'mincount':
@@ -185,7 +177,7 @@ def expect_value(self, got, expected, field):
             return
         self.assertEqual(
             expected, got,
-            'Invalid value for field %s, expected %r, got %r' % (field, expected, got))
+            f'Invalid value for field {field}, expected {expected!r}, got {got!r}')
 
 
 def expect_dict(self, got_dict, expected_dict):
@@ -260,13 +252,13 @@ def expect_info_dict(self, got_dict, expected_dict):
         info_dict_str = ''
         if len(missing_keys) != len(expected_dict):
             info_dict_str += ''.join(
-                '    %s: %s,\n' % (_repr(k), _repr(v))
+                f'    {_repr(k)}: {_repr(v)},\n'
                 for k, v in test_info_dict.items() if k not in missing_keys)
 
             if info_dict_str:
                 info_dict_str += '\n'
         info_dict_str += ''.join(
-            '    %s: %s,\n' % (_repr(k), _repr(test_info_dict[k]))
+            f'    {_repr(k)}: {_repr(test_info_dict[k])},\n'
             for k in missing_keys)
         write_string(
             '\n\'info_dict\': {\n' + info_dict_str + '},\n', out=sys.stderr)
@@ -295,21 +287,21 @@ def assertRegexpMatches(self, text, regexp, msg=None):
 def assertGreaterEqual(self, got, expected, msg=None):
     if not (got >= expected):
         if msg is None:
-            msg = '%r not greater than or equal to %r' % (got, expected)
+            msg = f'{got!r} not greater than or equal to {expected!r}'
         self.assertTrue(got >= expected, msg)
 
 
 def assertLessEqual(self, got, expected, msg=None):
     if not (got <= expected):
         if msg is None:
-            msg = '%r not less than or equal to %r' % (got, expected)
+            msg = f'{got!r} not less than or equal to {expected!r}'
         self.assertTrue(got <= expected, msg)
 
 
 def assertEqual(self, got, expected, msg=None):
     if not (got == expected):
         if msg is None:
-            msg = '%r not equal to %r' % (got, expected)
+            msg = f'{got!r} not equal to {expected!r}'
         self.assertTrue(got == expected, msg)
 
 
diff --git a/test/test_InfoExtractor.py b/test/test_InfoExtractor.py
index 866ded2433..4fd21bed4b 100644
--- a/test/test_InfoExtractor.py
+++ b/test/test_InfoExtractor.py
@@ -1,9 +1,5 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
-import io
 import os
 import sys
 import unittest
@@ -1011,8 +1007,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for m3u8_file, m3u8_url, expected_formats, expected_subs in _TEST_CASES:
-            with io.open('./test/testdata/m3u8/%s.m3u8' % m3u8_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/m3u8/%s.m3u8' % m3u8_file, encoding='utf-8') as f:
                 formats, subs = self.ie._parse_m3u8_formats_and_subtitles(
                     f.read(), m3u8_url, ext='mp4')
                 self.ie._sort_formats(formats)
@@ -1357,8 +1352,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for mpd_file, mpd_url, mpd_base_url, expected_formats, expected_subtitles in _TEST_CASES:
-            with io.open('./test/testdata/mpd/%s.mpd' % mpd_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/mpd/%s.mpd' % mpd_file, encoding='utf-8') as f:
                 formats, subtitles = self.ie._parse_mpd_formats_and_subtitles(
                     compat_etree_fromstring(f.read().encode('utf-8')),
                     mpd_base_url=mpd_base_url, mpd_url=mpd_url)
@@ -1549,8 +1543,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for ism_file, ism_url, expected_formats, expected_subtitles in _TEST_CASES:
-            with io.open('./test/testdata/ism/%s.Manifest' % ism_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/ism/%s.Manifest' % ism_file, encoding='utf-8') as f:
                 formats, subtitles = self.ie._parse_ism_formats_and_subtitles(
                     compat_etree_fromstring(f.read().encode('utf-8')), ism_url=ism_url)
                 self.ie._sort_formats(formats)
@@ -1576,8 +1569,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for f4m_file, f4m_url, expected_formats in _TEST_CASES:
-            with io.open('./test/testdata/f4m/%s.f4m' % f4m_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/f4m/%s.f4m' % f4m_file, encoding='utf-8') as f:
                 formats = self.ie._parse_f4m_formats(
                     compat_etree_fromstring(f.read().encode('utf-8')),
                     f4m_url, None)
@@ -1624,8 +1616,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for xspf_file, xspf_url, expected_entries in _TEST_CASES:
-            with io.open('./test/testdata/xspf/%s.xspf' % xspf_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/xspf/%s.xspf' % xspf_file, encoding='utf-8') as f:
                 entries = self.ie._parse_xspf(
                     compat_etree_fromstring(f.read().encode('utf-8')),
                     xspf_file, xspf_url=xspf_url, xspf_base_url=xspf_url)
diff --git a/test/test_YoutubeDL.py b/test/test_YoutubeDL.py
index c9108c5b6d..480c7539c8 100644
--- a/test/test_YoutubeDL.py
+++ b/test/test_YoutubeDL.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -25,7 +21,7 @@ TEST_URL = 'http://localhost/sample.mp4'
 
 class YDL(FakeYDL):
     def __init__(self, *args, **kwargs):
-        super(YDL, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.downloaded_info_dicts = []
         self.msgs = []
 
@@ -551,11 +547,11 @@ class TestYoutubeDL(unittest.TestCase):
         def s_formats(lang, autocaption=False):
             return [{
                 'ext': ext,
-                'url': 'http://localhost/video.%s.%s' % (lang, ext),
+                'url': f'http://localhost/video.{lang}.{ext}',
                 '_auto': autocaption,
             } for ext in ['vtt', 'srt', 'ass']]
-        subtitles = dict((l, s_formats(l)) for l in ['en', 'fr', 'es'])
-        auto_captions = dict((l, s_formats(l, True)) for l in ['it', 'pt', 'es'])
+        subtitles = {l: s_formats(l) for l in ['en', 'fr', 'es']}
+        auto_captions = {l: s_formats(l, True) for l in ['it', 'pt', 'es']}
         info_dict = {
             'id': 'test',
             'title': 'Test',
@@ -580,7 +576,7 @@ class TestYoutubeDL(unittest.TestCase):
         result = get_info({'writesubtitles': True})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['en']))
+        self.assertEqual(set(subs.keys()), {'en'})
         self.assertTrue(subs['en'].get('data') is None)
         self.assertEqual(subs['en']['ext'], 'ass')
 
@@ -591,39 +587,39 @@ class TestYoutubeDL(unittest.TestCase):
         result = get_info({'writesubtitles': True, 'subtitleslangs': ['es', 'fr', 'it']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['es', 'fr']))
+        self.assertEqual(set(subs.keys()), {'es', 'fr'})
 
         result = get_info({'writesubtitles': True, 'subtitleslangs': ['all', '-en']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['es', 'fr']))
+        self.assertEqual(set(subs.keys()), {'es', 'fr'})
 
         result = get_info({'writesubtitles': True, 'subtitleslangs': ['en', 'fr', '-en']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['fr']))
+        self.assertEqual(set(subs.keys()), {'fr'})
 
         result = get_info({'writesubtitles': True, 'subtitleslangs': ['-en', 'en']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['en']))
+        self.assertEqual(set(subs.keys()), {'en'})
 
         result = get_info({'writesubtitles': True, 'subtitleslangs': ['e.+']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['es', 'en']))
+        self.assertEqual(set(subs.keys()), {'es', 'en'})
 
         result = get_info({'writesubtitles': True, 'writeautomaticsub': True, 'subtitleslangs': ['es', 'pt']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['es', 'pt']))
+        self.assertEqual(set(subs.keys()), {'es', 'pt'})
         self.assertFalse(subs['es']['_auto'])
         self.assertTrue(subs['pt']['_auto'])
 
         result = get_info({'writeautomaticsub': True, 'subtitleslangs': ['es', 'pt']})
         subs = result['requested_subtitles']
         self.assertTrue(subs)
-        self.assertEqual(set(subs.keys()), set(['es', 'pt']))
+        self.assertEqual(set(subs.keys()), {'es', 'pt'})
         self.assertTrue(subs['es']['_auto'])
         self.assertTrue(subs['pt']['_auto'])
 
@@ -1082,7 +1078,7 @@ class TestYoutubeDL(unittest.TestCase):
 
         class _YDL(YDL):
             def __init__(self, *args, **kwargs):
-                super(_YDL, self).__init__(*args, **kwargs)
+                super().__init__(*args, **kwargs)
 
             def trouble(self, s, tb=None):
                 pass
diff --git a/test/test_YoutubeDLCookieJar.py b/test/test_YoutubeDLCookieJar.py
index c514413a45..1e5bedcaed 100644
--- a/test/test_YoutubeDLCookieJar.py
+++ b/test/test_YoutubeDLCookieJar.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import os
 import re
 import sys
diff --git a/test/test_aes.py b/test/test_aes.py
index 5c9273f8aa..34584a04f5 100644
--- a/test/test_aes.py
+++ b/test/test_aes.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_age_restriction.py b/test/test_age_restriction.py
index 70f9f48455..50d16a7297 100644
--- a/test/test_age_restriction.py
+++ b/test/test_age_restriction.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_all_urls.py b/test/test_all_urls.py
index 2d89366d45..d70da8cae5 100644
--- a/test/test_all_urls.py
+++ b/test/test_all_urls.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -81,11 +78,11 @@ class TestAllURLsMatching(unittest.TestCase):
             url = tc['url']
             for ie in ies:
                 if type(ie).__name__ in ('GenericIE', tc['name'] + 'IE'):
-                    self.assertTrue(ie.suitable(url), '%s should match URL %r' % (type(ie).__name__, url))
+                    self.assertTrue(ie.suitable(url), f'{type(ie).__name__} should match URL {url!r}')
                 else:
                     self.assertFalse(
                         ie.suitable(url),
-                        '%s should not match URL %r . That URL belongs to %s.' % (type(ie).__name__, url, tc['name']))
+                        f'{type(ie).__name__} should not match URL {url!r} . That URL belongs to {tc["name"]}.')
 
     def test_keywords(self):
         self.assertMatch(':ytsubs', ['youtube:subscriptions'])
@@ -120,7 +117,7 @@ class TestAllURLsMatching(unittest.TestCase):
         for (ie_name, ie_list) in name_accu.items():
             self.assertEqual(
                 len(ie_list), 1,
-                'Multiple extractors with the same IE_NAME "%s" (%s)' % (ie_name, ', '.join(ie_list)))
+                f'Multiple extractors with the same IE_NAME "{ie_name}" ({", ".join(ie_list)})')
 
 
 if __name__ == '__main__':
diff --git a/test/test_cache.py b/test/test_cache.py
index 8c4f853872..4e4641ebad 100644
--- a/test/test_cache.py
+++ b/test/test_cache.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import shutil
 
 # Allow direct execution
diff --git a/test/test_compat.py b/test/test_compat.py
index 6cbffd6feb..31524c5abb 100644
--- a/test/test_compat.py
+++ b/test/test_compat.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -48,7 +44,7 @@ class TestCompat(unittest.TestCase):
         all_names = yt_dlp.compat.__all__
         present_names = set(filter(
             lambda c: '_' in c and not c.startswith('_'),
-            dir(yt_dlp.compat))) - set(['unicode_literals'])
+            dir(yt_dlp.compat))) - {'unicode_literals'}
         self.assertEqual(all_names, sorted(present_names))
 
     def test_compat_urllib_parse_unquote(self):
diff --git a/test/test_download.py b/test/test_download.py
index 818a670fbd..3c6b55d984 100755
--- a/test/test_download.py
+++ b/test/test_download.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -21,7 +18,6 @@ from test.helper import (
 
 
 import hashlib
-import io
 import json
 import socket
 
@@ -46,7 +42,7 @@ class YoutubeDL(yt_dlp.YoutubeDL):
     def __init__(self, *args, **kwargs):
         self.to_stderr = self.to_screen
         self.processed_info_dicts = []
-        super(YoutubeDL, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def report_warning(self, message):
         # Don't accept warnings during tests
@@ -54,7 +50,7 @@ class YoutubeDL(yt_dlp.YoutubeDL):
 
     def process_info(self, info_dict):
         self.processed_info_dicts.append(info_dict.copy())
-        return super(YoutubeDL, self).process_info(info_dict)
+        return super().process_info(info_dict)
 
 
 def _file_md5(fn):
@@ -80,7 +76,7 @@ class TestDownload(unittest.TestCase):
 
         def strclass(cls):
             """From 2.7's unittest; 2.6 had _strclass so we can't import it."""
-            return '%s.%s' % (cls.__module__, cls.__name__)
+            return f'{cls.__module__}.{cls.__name__}'
 
         add_ie = getattr(self, self._testMethodName).add_ie
         return '%s (%s)%s:' % (self._testMethodName,
@@ -179,7 +175,7 @@ def generator(test_case, tname):
                         report_warning('%s failed due to network errors, skipping...' % tname)
                         return
 
-                    print('Retrying: {0} failed tries\n\n##########\n\n'.format(try_num))
+                    print(f'Retrying: {try_num} failed tries\n\n##########\n\n')
 
                     try_num += 1
                 else:
@@ -245,7 +241,7 @@ def generator(test_case, tname):
                 self.assertTrue(
                     os.path.exists(info_json_fn),
                     'Missing info file %s' % info_json_fn)
-                with io.open(info_json_fn, encoding='utf-8') as infof:
+                with open(info_json_fn, encoding='utf-8') as infof:
                     info_dict = json.load(infof)
                 expect_info_dict(self, info_dict, tc.get('info_dict', {}))
         finally:
diff --git a/test/test_downloader_http.py b/test/test_downloader_http.py
index 03ae8c62a4..c511909c72 100644
--- a/test/test_downloader_http.py
+++ b/test/test_downloader_http.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import re
@@ -66,7 +63,7 @@ class HTTPTestRequestHandler(compat_http_server.BaseHTTPRequestHandler):
             assert False
 
 
-class FakeLogger(object):
+class FakeLogger:
     def debug(self, msg):
         pass
 
diff --git a/test/test_execution.py b/test/test_execution.py
index 4981786e12..623f081655 100644
--- a/test/test_execution.py
+++ b/test/test_execution.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import unittest
 
 import sys
@@ -45,7 +41,7 @@ class TestExecution(unittest.TestCase):
         finally:
             try:
                 os.remove('yt_dlp/extractor/lazy_extractors.py')
-            except (IOError, OSError):
+            except OSError:
                 pass
 
 
diff --git a/test/test_http.py b/test/test_http.py
index eec8684b1a..2106220eb2 100644
--- a/test/test_http.py
+++ b/test/test_http.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -41,7 +38,7 @@ class HTTPTestRequestHandler(compat_http_server.BaseHTTPRequestHandler):
             assert False
 
 
-class FakeLogger(object):
+class FakeLogger:
     def debug(self, msg):
         pass
 
@@ -117,23 +114,23 @@ class TestProxy(unittest.TestCase):
         self.geo_proxy_thread.start()
 
     def test_proxy(self):
-        geo_proxy = '127.0.0.1:{0}'.format(self.geo_port)
+        geo_proxy = f'127.0.0.1:{self.geo_port}'
         ydl = YoutubeDL({
-            'proxy': '127.0.0.1:{0}'.format(self.port),
+            'proxy': f'127.0.0.1:{self.port}',
             'geo_verification_proxy': geo_proxy,
         })
         url = 'http://foo.com/bar'
         response = ydl.urlopen(url).read().decode('utf-8')
-        self.assertEqual(response, 'normal: {0}'.format(url))
+        self.assertEqual(response, f'normal: {url}')
 
         req = compat_urllib_request.Request(url)
         req.add_header('Ytdl-request-proxy', geo_proxy)
         response = ydl.urlopen(req).read().decode('utf-8')
-        self.assertEqual(response, 'geo: {0}'.format(url))
+        self.assertEqual(response, f'geo: {url}')
 
     def test_proxy_with_idn(self):
         ydl = YoutubeDL({
-            'proxy': '127.0.0.1:{0}'.format(self.port),
+            'proxy': f'127.0.0.1:{self.port}',
         })
         url = 'http://中文.tw/'
         response = ydl.urlopen(url).read().decode('utf-8')
diff --git a/test/test_iqiyi_sdk_interpreter.py b/test/test_iqiyi_sdk_interpreter.py
index adbae46903..57a7ed3a8a 100644
--- a/test/test_iqiyi_sdk_interpreter.py
+++ b/test/test_iqiyi_sdk_interpreter.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -12,7 +9,7 @@ from test.helper import FakeYDL, is_download_test
 from yt_dlp.extractor import IqiyiIE
 
 
-class WarningLogger(object):
+class WarningLogger:
     def __init__(self):
         self.messages = []
 
diff --git a/test/test_jsinterp.py b/test/test_jsinterp.py
index e230b045fd..10a465cf95 100644
--- a/test/test_jsinterp.py
+++ b/test/test_jsinterp.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_netrc.py b/test/test_netrc.py
index 94a703406b..adc3a0ed1e 100644
--- a/test/test_netrc.py
+++ b/test/test_netrc.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import os
 import sys
 import unittest
diff --git a/test/test_overwrites.py b/test/test_overwrites.py
index f5d10a409b..8e0548db5b 100644
--- a/test/test_overwrites.py
+++ b/test/test_overwrites.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 import os
 from os.path import join
 import subprocess
diff --git a/test/test_post_hooks.py b/test/test_post_hooks.py
index 1555a23e0d..020203f2fa 100644
--- a/test/test_post_hooks.py
+++ b/test/test_post_hooks.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 import os
 import sys
 import unittest
@@ -14,7 +11,7 @@ from yt_dlp.utils import DownloadError
 
 class YoutubeDL(yt_dlp.YoutubeDL):
     def __init__(self, *args, **kwargs):
-        super(YoutubeDL, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.to_stderr = self.to_screen
 
 
diff --git a/test/test_postprocessors.py b/test/test_postprocessors.py
index bbe998993f..e5893f7d2e 100644
--- a/test/test_postprocessors.py
+++ b/test/test_postprocessors.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_socks.py b/test/test_socks.py
index cf1f613ab4..02723b4698 100644
--- a/test/test_socks.py
+++ b/test/test_socks.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_subtitles.py b/test/test_subtitles.py
index 95e33e54ac..0be1842da9 100644
--- a/test/test_subtitles.py
+++ b/test/test_subtitles.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -54,7 +52,7 @@ class BaseTestSubtitles(unittest.TestCase):
             if sub_info.get('data') is None:
                 uf = self.DL.urlopen(sub_info['url'])
                 sub_info['data'] = uf.read().decode('utf-8')
-        return dict((l, sub_info['data']) for l, sub_info in subtitles.items())
+        return {l: sub_info['data'] for l, sub_info in subtitles.items()}
 
 
 @is_download_test
@@ -163,7 +161,7 @@ class TestVimeoSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['de', 'en', 'es', 'fr']))
+        self.assertEqual(set(subtitles.keys()), {'de', 'en', 'es', 'fr'})
         self.assertEqual(md5(subtitles['en']), '8062383cf4dec168fc40a088aa6d5888')
         self.assertEqual(md5(subtitles['fr']), 'b6191146a6c5d3a452244d853fde6dc8')
 
@@ -186,7 +184,7 @@ class TestWallaSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['heb']))
+        self.assertEqual(set(subtitles.keys()), {'heb'})
         self.assertEqual(md5(subtitles['heb']), 'e758c5d7cb982f6bef14f377ec7a3920')
 
     def test_nosubtitles(self):
@@ -208,7 +206,7 @@ class TestCeskaTelevizeSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['cs']))
+        self.assertEqual(set(subtitles.keys()), {'cs'})
         self.assertTrue(len(subtitles['cs']) > 20000)
 
     def test_nosubtitles(self):
@@ -229,7 +227,7 @@ class TestLyndaSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), '09bbe67222259bed60deaa26997d73a7')
 
 
@@ -242,7 +240,7 @@ class TestNPOSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['nl']))
+        self.assertEqual(set(subtitles.keys()), {'nl'})
         self.assertEqual(md5(subtitles['nl']), 'fc6435027572b63fb4ab143abd5ad3f4')
 
 
@@ -252,13 +250,13 @@ class TestMTVSubtitles(BaseTestSubtitles):
     IE = ComedyCentralIE
 
     def getInfoDict(self):
-        return super(TestMTVSubtitles, self).getInfoDict()['entries'][0]
+        return super().getInfoDict()['entries'][0]
 
     def test_allsubtitles(self):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), '78206b8d8a0cfa9da64dc026eea48961')
 
 
@@ -271,7 +269,7 @@ class TestNRKSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['no']))
+        self.assertEqual(set(subtitles.keys()), {'no'})
         self.assertEqual(md5(subtitles['no']), '544fa917d3197fcbee64634559221cc2')
 
 
@@ -284,7 +282,7 @@ class TestRaiPlaySubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['it']))
+        self.assertEqual(set(subtitles.keys()), {'it'})
         self.assertEqual(md5(subtitles['it']), 'b1d90a98755126b61e667567a1f6680a')
 
     def test_subtitles_array_key(self):
@@ -292,7 +290,7 @@ class TestRaiPlaySubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['it']))
+        self.assertEqual(set(subtitles.keys()), {'it'})
         self.assertEqual(md5(subtitles['it']), '4b3264186fbb103508abe5311cfcb9cd')
 
 
@@ -305,7 +303,7 @@ class TestVikiSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), '53cb083a5914b2d84ef1ab67b880d18a')
 
 
@@ -320,7 +318,7 @@ class TestThePlatformSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), '97e7670cbae3c4d26ae8bcc7fdd78d4b')
 
 
@@ -333,7 +331,7 @@ class TestThePlatformFeedSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), '48649a22e82b2da21c9a67a395eedade')
 
 
@@ -348,7 +346,7 @@ class TestRtveSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['es']))
+        self.assertEqual(set(subtitles.keys()), {'es'})
         self.assertEqual(md5(subtitles['es']), '69e70cae2d40574fb7316f31d6eb7fca')
 
 
@@ -361,7 +359,7 @@ class TestDemocracynowSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), 'acaca989e24a9e45a6719c9b3d60815c')
 
     def test_subtitles_in_page(self):
@@ -369,7 +367,7 @@ class TestDemocracynowSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
         self.assertEqual(md5(subtitles['en']), 'acaca989e24a9e45a6719c9b3d60815c')
 
 
@@ -382,7 +380,7 @@ class TestPBSSubtitles(BaseTestSubtitles):
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), set(['en']))
+        self.assertEqual(set(subtitles.keys()), {'en'})
 
     def test_subtitles_dfxp_format(self):
         self.DL.params['writesubtitles'] = True
diff --git a/test/test_update.py.disabled b/test/test_update.py.disabled
index 1e8edf0f6b..5f0794ae27 100644
--- a/test/test_update.py.disabled
+++ b/test/test_update.py.disabled
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_utils.py b/test/test_utils.py
index c1228c74ad..e0c862807e 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -266,7 +262,7 @@ class TestUtil(unittest.TestCase):
 
     def test_expand_path(self):
         def env(var):
-            return '%{0}%'.format(var) if sys.platform == 'win32' else '${0}'.format(var)
+            return f'%{var}%' if sys.platform == 'win32' else f'${var}'
 
         compat_setenv('yt_dlp_EXPATH_PATH', 'expanded')
         self.assertEqual(expand_path(env('yt_dlp_EXPATH_PATH')), 'expanded')
@@ -666,8 +662,7 @@ class TestUtil(unittest.TestCase):
             def get_page(pagenum):
                 firstid = pagenum * pagesize
                 upto = min(size, pagenum * pagesize + pagesize)
-                for i in range(firstid, upto):
-                    yield i
+                yield from range(firstid, upto)
 
             pl = OnDemandPagedList(get_page, pagesize)
             got = pl.getslice(*sliceargs)
@@ -736,7 +731,7 @@ class TestUtil(unittest.TestCase):
             multipart_encode({b'field': b'value'}, boundary='AAAAAA')[0],
             b'--AAAAAA\r\nContent-Disposition: form-data; name="field"\r\n\r\nvalue\r\n--AAAAAA--\r\n')
         self.assertEqual(
-            multipart_encode({'欄位'.encode('utf-8'): '值'.encode('utf-8')}, boundary='AAAAAA')[0],
+            multipart_encode({'欄位'.encode(): '值'.encode()}, boundary='AAAAAA')[0],
             b'--AAAAAA\r\nContent-Disposition: form-data; name="\xe6\xac\x84\xe4\xbd\x8d"\r\n\r\n\xe5\x80\xbc\r\n--AAAAAA--\r\n')
         self.assertRaises(
             ValueError, multipart_encode, {b'field': b'value'}, boundary='value')
@@ -1397,7 +1392,7 @@ ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
                     <p begin="3" dur="-1">Ignored, three</p>
                 </div>
             </body>
-            </tt>'''.encode('utf-8')
+            </tt>'''.encode()
         srt_data = '''1
 00:00:00,000 --> 00:00:01,000
 The following line contains Chinese characters and special symbols
@@ -1415,14 +1410,14 @@ Line
 '''
         self.assertEqual(dfxp2srt(dfxp_data), srt_data)
 
-        dfxp_data_no_default_namespace = '''<?xml version="1.0" encoding="UTF-8"?>
+        dfxp_data_no_default_namespace = b'''<?xml version="1.0" encoding="UTF-8"?>
             <tt xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
             <body>
                 <div xml:lang="en">
                     <p begin="0" end="1">The first line</p>
                 </div>
             </body>
-            </tt>'''.encode('utf-8')
+            </tt>'''
         srt_data = '''1
 00:00:00,000 --> 00:00:01,000
 The first line
@@ -1430,7 +1425,7 @@ The first line
 '''
         self.assertEqual(dfxp2srt(dfxp_data_no_default_namespace), srt_data)
 
-        dfxp_data_with_style = '''<?xml version="1.0" encoding="utf-8"?>
+        dfxp_data_with_style = b'''<?xml version="1.0" encoding="utf-8"?>
 <tt xmlns="http://www.w3.org/2006/10/ttaf1" xmlns:ttp="http://www.w3.org/2006/10/ttaf1#parameter" ttp:timeBase="media" xmlns:tts="http://www.w3.org/2006/10/ttaf1#style" xml:lang="en" xmlns:ttm="http://www.w3.org/2006/10/ttaf1#metadata">
   <head>
     <styling>
@@ -1448,7 +1443,7 @@ The first line
       <p style="s1" tts:textDecoration="underline" begin="00:00:09.56" id="p2" end="00:00:12.36"><span style="s2" tts:color="lime">inner<br /> </span>style</p>
     </div>
   </body>
-</tt>'''.encode('utf-8')
+</tt>'''
         srt_data = '''1
 00:00:02,080 --> 00:00:05,840
 <font color="white" face="sansSerif" size="16">default style<font color="red">custom style</font></font>
diff --git a/test/test_verbose_output.py b/test/test_verbose_output.py
index cc606115fe..17aeafbc06 100644
--- a/test/test_verbose_output.py
+++ b/test/test_verbose_output.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import unittest
 
 import sys
diff --git a/test/test_write_annotations.py.disabled b/test/test_write_annotations.py.disabled
index 7e4d8bc5a9..4173fd09d1 100644
--- a/test/test_write_annotations.py.disabled
+++ b/test/test_write_annotations.py.disabled
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
@@ -21,7 +18,7 @@ import yt_dlp.extractor
 
 class YoutubeDL(yt_dlp.YoutubeDL):
     def __init__(self, *args, **kwargs):
-        super(YoutubeDL, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.to_stderr = self.to_screen
 
 
@@ -52,7 +49,7 @@ class TestAnnotations(unittest.TestCase):
         ydl.download([TEST_ID])
         self.assertTrue(os.path.exists(ANNOTATIONS_FILE))
         annoxml = None
-        with io.open(ANNOTATIONS_FILE, 'r', encoding='utf-8') as annof:
+        with open(ANNOTATIONS_FILE, encoding='utf-8') as annof:
             annoxml = xml.etree.ElementTree.parse(annof)
         self.assertTrue(annoxml is not None, 'Failed to parse annotations XML')
         root = annoxml.getroot()
diff --git a/test/test_youtube_lists.py b/test/test_youtube_lists.py
index 455192b1f2..8691abb67a 100644
--- a/test/test_youtube_lists.py
+++ b/test/test_youtube_lists.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_youtube_misc.py b/test/test_youtube_misc.py
index 402681cad8..70d6d99491 100644
--- a/test/test_youtube_misc.py
+++ b/test/test_youtube_misc.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
diff --git a/test/test_youtube_signature.py b/test/test_youtube_signature.py
index 6412acce04..d751d53961 100644
--- a/test/test_youtube_signature.py
+++ b/test/test_youtube_signature.py
@@ -1,14 +1,10 @@
 #!/usr/bin/env python3
-
-from __future__ import unicode_literals
-
 # Allow direct execution
 import os
 import sys
 import unittest
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
-import io
 import re
 import string
 import urllib.request
@@ -149,7 +145,7 @@ def t_factory(name, sig_func, url_pattern):
 
             if not os.path.exists(fn):
                 urllib.request.urlretrieve(url, fn)
-            with io.open(fn, encoding='utf-8') as testf:
+            with open(fn, encoding='utf-8') as testf:
                 jscode = testf.read()
             self.assertEqual(sig_func(jscode, sig_input), expected_sig)
 
diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index 4bf5a8942c..56f0346dcc 100644
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import absolute_import, unicode_literals
-
 import collections
 import contextlib
 import datetime
@@ -165,7 +161,7 @@ if compat_os_name == 'nt':
     import ctypes
 
 
-class YoutubeDL(object):
+class YoutubeDL:
     """YoutubeDL class.
 
     YoutubeDL objects are the ones responsible of downloading the
@@ -501,7 +497,7 @@ class YoutubeDL(object):
                        care about HLS. (only for youtube)
     """
 
-    _NUMERIC_FIELDS = set((
+    _NUMERIC_FIELDS = {
         'width', 'height', 'tbr', 'abr', 'asr', 'vbr', 'fps', 'filesize', 'filesize_approx',
         'timestamp', 'release_timestamp',
         'duration', 'view_count', 'like_count', 'dislike_count', 'repost_count',
@@ -509,7 +505,7 @@ class YoutubeDL(object):
         'start_time', 'end_time',
         'chapter_number', 'season_number', 'episode_number',
         'track_number', 'disc_number', 'release_year',
-    ))
+    }
 
     _format_fields = {
         # NB: Keep in sync with the docstring of extractor/common.py
@@ -576,7 +572,7 @@ class YoutubeDL(object):
 
         def check_deprecated(param, option, suggestion):
             if self.params.get(param) is not None:
-                self.report_warning('%s is deprecated. Use %s instead' % (option, suggestion))
+                self.report_warning(f'{option} is deprecated. Use {suggestion} instead')
                 return True
             return False
 
@@ -693,7 +689,7 @@ class YoutubeDL(object):
                 with locked_file(fn, 'r', encoding='utf-8') as archive_file:
                     for line in archive_file:
                         self.archive.add(line.strip())
-            except IOError as ioe:
+            except OSError as ioe:
                 if ioe.errno != errno.ENOENT:
                     raise
                 return False
@@ -990,11 +986,9 @@ class YoutubeDL(object):
         outtmpl_dict.update({
             k: sanitize(v) for k, v in DEFAULT_OUTTMPL.items()
             if outtmpl_dict.get(k) is None})
-        for key, val in outtmpl_dict.items():
+        for _, val in outtmpl_dict.items():
             if isinstance(val, bytes):
-                self.report_warning(
-                    'Parameter outtmpl is bytes, but should be a unicode string. '
-                    'Put  from __future__ import unicode_literals  at the top of your code file or consider switching to Python 3.x.')
+                self.report_warning('Parameter outtmpl is bytes, but should be a unicode string')
         return outtmpl_dict
 
     def get_output_path(self, dir_type='', filename=None):
@@ -1013,7 +1007,7 @@ class YoutubeDL(object):
         # '%%' intact for template dict substitution step. Working around
         # with boundary-alike separator hack.
         sep = ''.join([random.choice(ascii_letters) for _ in range(32)])
-        outtmpl = outtmpl.replace('%%', '%{0}%'.format(sep)).replace('$$', '${0}$'.format(sep))
+        outtmpl = outtmpl.replace('%%', f'%{sep}%').replace('$$', f'${sep}$')
 
         # outtmpl should be expand_path'ed before template dict substitution
         # because meta fields may contain env variables we don't want to
@@ -1173,7 +1167,7 @@ class YoutubeDL(object):
 
             fmt = outer_mobj.group('format')
             if fmt == 's' and value is not None and key in field_size_compat_map.keys():
-                fmt = '0{:d}d'.format(field_size_compat_map[key])
+                fmt = f'0{field_size_compat_map[key]:d}d'
 
             value = default if value is None else value if replacement is None else replacement
 
@@ -1188,7 +1182,7 @@ class YoutubeDL(object):
                 value = map(str, variadic(value) if '#' in flags else [value])
                 value, fmt = ' '.join(map(compat_shlex_quote, value)), str_fmt
             elif fmt[-1] == 'B':  # bytes
-                value = f'%{str_fmt}'.encode('utf-8') % str(value).encode('utf-8')
+                value = f'%{str_fmt}'.encode() % str(value).encode('utf-8')
                 value, fmt = value.decode('utf-8', 'ignore'), 's'
             elif fmt[-1] == 'U':  # unicode normalized
                 value, fmt = unicodedata.normalize(
@@ -1301,7 +1295,7 @@ class YoutubeDL(object):
             if date is not None:
                 dateRange = self.params.get('daterange', DateRange())
                 if date not in dateRange:
-                    return '%s upload date is not in range %s' % (date_from_str(date).isoformat(), dateRange)
+                    return f'{date_from_str(date).isoformat()} upload date is not in range {dateRange}'
             view_count = info_dict.get('view_count')
             if view_count is not None:
                 min_views = self.params.get('min_views')
@@ -1765,14 +1759,14 @@ class YoutubeDL(object):
 
         x_forwarded_for = ie_result.get('__x_forwarded_for_ip')
 
-        self.to_screen('[%s] playlist %s: %s' % (ie_result['extractor'], playlist, msg % n_entries))
+        self.to_screen(f'[{ie_result["extractor"]}] playlist {playlist}: {msg % n_entries}')
         failures = 0
         max_failures = self.params.get('skip_playlist_after_errors') or float('inf')
         for i, entry_tuple in enumerate(entries, 1):
             playlist_index, entry = entry_tuple
             if 'playlist-index' in self.params.get('compat_opts', []):
                 playlist_index = playlistitems[i - 1] if playlistitems else i + playliststart - 1
-            self.to_screen('[download] Downloading video %s of %s' % (i, n_entries))
+            self.to_screen(f'[download] Downloading video {i} of {n_entries}')
             # This __x_forwarded_for_ip thing is a bit ugly but requires
             # minimal changes
             if x_forwarded_for:
@@ -1940,7 +1934,7 @@ class YoutubeDL(object):
         def syntax_error(note, start):
             message = (
                 'Invalid format specification: '
-                '{0}\n\t{1}\n\t{2}^'.format(note, format_spec, ' ' * start[1]))
+                '{}\n\t{}\n\t{}^'.format(note, format_spec, ' ' * start[1]))
             return SyntaxError(message)
 
         PICKFIRST = 'PICKFIRST'
@@ -2044,7 +2038,7 @@ class YoutubeDL(object):
                             raise syntax_error('Expected a selector', start)
                         current_selector = FormatSelector(MERGE, (selector_1, selector_2), [])
                     else:
-                        raise syntax_error('Operator not recognized: "{0}"'.format(string), start)
+                        raise syntax_error(f'Operator not recognized: "{string}"', start)
                 elif type == tokenize.ENDMARKER:
                     break
             if current_selector:
@@ -2244,7 +2238,7 @@ class YoutubeDL(object):
         except tokenize.TokenError:
             raise syntax_error('Missing closing/opening brackets or parenthesis', (0, len(format_spec)))
 
-        class TokenIterator(object):
+        class TokenIterator:
             def __init__(self, tokens):
                 self.tokens = tokens
                 self.counter = 0
@@ -2644,7 +2638,7 @@ class YoutubeDL(object):
                 if max_downloads_reached:
                     break
 
-            write_archive = set(f.get('__write_download_archive', False) for f in formats_to_download)
+            write_archive = {f.get('__write_download_archive', False) for f in formats_to_download}
             assert write_archive.issubset({True, False, 'ignore'})
             if True in write_archive and False not in write_archive:
                 self.record_download_archive(info_dict)
@@ -2712,7 +2706,7 @@ class YoutubeDL(object):
         for lang in requested_langs:
             formats = available_subs.get(lang)
             if formats is None:
-                self.report_warning('%s subtitles not available for %s' % (lang, video_id))
+                self.report_warning(f'{lang} subtitles not available for {video_id}')
                 continue
             for ext in formats_preference:
                 if ext == 'best':
@@ -2755,7 +2749,7 @@ class YoutubeDL(object):
             tmpl = format_tmpl(tmpl)
             self.to_screen(f'[info] Writing {tmpl!r} to: {filename}')
             if self._ensure_dir_exists(filename):
-                with io.open(filename, 'a', encoding='utf-8') as f:
+                with open(filename, 'a', encoding='utf-8') as f:
                     f.write(self.evaluate_outtmpl(tmpl, info_copy) + '\n')
 
     def __forced_printings(self, info_dict, filename, incomplete):
@@ -2920,11 +2914,11 @@ class YoutubeDL(object):
             else:
                 try:
                     self.to_screen('[info] Writing video annotations to: ' + annofn)
-                    with io.open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
+                    with open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
                         annofile.write(info_dict['annotations'])
                 except (KeyError, TypeError):
                     self.report_warning('There are no annotations to write.')
-                except (OSError, IOError):
+                except OSError:
                     self.report_error('Cannot write annotations file: ' + annofn)
                     return
 
@@ -2943,13 +2937,13 @@ class YoutubeDL(object):
                 return True
             try:
                 self.to_screen(f'[info] Writing internet shortcut (.{link_type}) to: {linkfn}')
-                with io.open(encodeFilename(to_high_limit_path(linkfn)), 'w', encoding='utf-8',
-                             newline='\r\n' if link_type == 'url' else '\n') as linkfile:
+                with open(encodeFilename(to_high_limit_path(linkfn)), 'w', encoding='utf-8',
+                          newline='\r\n' if link_type == 'url' else '\n') as linkfile:
                     template_vars = {'url': url}
                     if link_type == 'desktop':
                         template_vars['filename'] = linkfn[:-(len(link_type) + 1)]
                     linkfile.write(LINK_TEMPLATES[link_type] % template_vars)
-            except (OSError, IOError):
+            except OSError:
                 self.report_error(f'Cannot write internet shortcut {linkfn}')
                 return False
             return True
@@ -3014,10 +3008,10 @@ class YoutubeDL(object):
                             return False
 
                         # Check extension
-                        exts = set(format.get('ext') for format in formats)
+                        exts = {format.get('ext') for format in formats}
                         COMPATIBLE_EXTS = (
-                            set(('mp3', 'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'ismv', 'isma')),
-                            set(('webm',)),
+                            {'mp3', 'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'ismv', 'isma'},
+                            {'webm'},
                         )
                         for ext_sets in COMPATIBLE_EXTS:
                             if ext_sets.issuperset(exts):
@@ -3050,7 +3044,7 @@ class YoutubeDL(object):
                             os.path.splitext(filename)[0]
                             if filename_real_ext in (old_ext, new_ext)
                             else filename)
-                        return '%s.%s' % (filename_wo_ext, ext)
+                        return f'{filename_wo_ext}.{ext}'
 
                     # Ensure filename always has a correct extension for successful merge
                     full_filename = correct_ext(full_filename)
@@ -3135,10 +3129,10 @@ class YoutubeDL(object):
             except network_exceptions as err:
                 self.report_error('unable to download video data: %s' % error_to_compat_str(err))
                 return
-            except (OSError, IOError) as err:
+            except OSError as err:
                 raise UnavailableVideoError(err)
             except (ContentTooShortError, ) as err:
-                self.report_error('content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
+                self.report_error(f'content too short (expected {err.expected} bytes and served {err.downloaded})')
                 return
 
             if success and full_filename != '-':
@@ -3343,7 +3337,7 @@ class YoutubeDL(object):
                 self.to_screen('Deleting original file %s (pass -k to keep)' % old_filename)
                 try:
                     os.remove(encodeFilename(old_filename))
-                except (IOError, OSError):
+                except OSError:
                     self.report_warning('Unable to remove downloaded original file')
                 if old_filename in infodict['__files_to_move']:
                     del infodict['__files_to_move'][old_filename]
@@ -3388,7 +3382,7 @@ class YoutubeDL(object):
                     break
             else:
                 return
-        return '%s %s' % (extractor.lower(), video_id)
+        return f'{extractor.lower()} {video_id}'
 
     def in_download_archive(self, info_dict):
         fn = self.params.get('download_archive')
@@ -3791,7 +3785,7 @@ class YoutubeDL(object):
         try:
             write_json_file(self.sanitize_info(ie_result, self.params.get('clean_infojson', True)), infofn)
             return True
-        except (OSError, IOError):
+        except OSError:
             self.report_error(f'Cannot write {label} metadata to JSON file {infofn}')
             return None
 
@@ -3812,9 +3806,9 @@ class YoutubeDL(object):
         else:
             try:
                 self.to_screen(f'[info] Writing {label} description to: {descfn}')
-                with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
+                with open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                     descfile.write(ie_result['description'])
-            except (OSError, IOError):
+            except OSError:
                 self.report_error(f'Cannot write {label} description file {descfn}')
                 return None
         return True
@@ -3848,12 +3842,12 @@ class YoutubeDL(object):
                 try:
                     # Use newline='' to prevent conversion of newline characters
                     # See https://github.com/ytdl-org/youtube-dl/issues/10268
-                    with io.open(sub_filename, 'w', encoding='utf-8', newline='') as subfile:
+                    with open(sub_filename, 'w', encoding='utf-8', newline='') as subfile:
                         subfile.write(sub_info['data'])
                     sub_info['filepath'] = sub_filename
                     ret.append((sub_filename, sub_filename_final))
                     continue
-                except (OSError, IOError):
+                except OSError:
                     self.report_error(f'Cannot write video subtitles file {sub_filename}')
                     return None
 
diff --git a/yt_dlp/__init__.py b/yt_dlp/__init__.py
index 10dc221b4c..91bf5c4cea 100644
--- a/yt_dlp/__init__.py
+++ b/yt_dlp/__init__.py
@@ -1,11 +1,8 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
 f'You are using an unsupported version of Python. Only Python versions 3.6 and above are supported by yt-dlp'  # noqa: F541
 
 __license__ = 'Public Domain'
 
-import io
 import itertools
 import os
 import random
@@ -67,13 +64,12 @@ def get_urls(urls, batchfile, verbose):
                     'Ctrl+Z' if compat_os_name == 'nt' else 'Ctrl+D'))
                 batchfd = sys.stdin
             else:
-                batchfd = io.open(
-                    expand_path(batchfile),
-                    'r', encoding='utf-8', errors='ignore')
+                batchfd = open(
+                    expand_path(batchfile), encoding='utf-8', errors='ignore')
             batch_urls = read_batch_urls(batchfd)
             if verbose:
                 write_string('[debug] Batch file urls: ' + repr(batch_urls) + '\n')
-        except IOError:
+        except OSError:
             sys.exit('ERROR: batch file %s could not be read' % batchfile)
     _enc = preferredencoding()
     return [
diff --git a/yt_dlp/__main__.py b/yt_dlp/__main__.py
index fb2726bd3f..c9d275b863 100644
--- a/yt_dlp/__main__.py
+++ b/yt_dlp/__main__.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-from __future__ import unicode_literals
-
 # Execute with
 # $ python -m yt_dlp
 
diff --git a/yt_dlp/aes.py b/yt_dlp/aes.py
index b37f0dd392..e5d73f7406 100644
--- a/yt_dlp/aes.py
+++ b/yt_dlp/aes.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from math import ceil
 
 from .compat import (
diff --git a/yt_dlp/cache.py b/yt_dlp/cache.py
index e5cb193bce..f93ef85e72 100644
--- a/yt_dlp/cache.py
+++ b/yt_dlp/cache.py
@@ -1,7 +1,4 @@
-from __future__ import unicode_literals
-
 import errno
-import io
 import json
 import os
 import re
@@ -15,7 +12,7 @@ from .utils import (
 )
 
 
-class Cache(object):
+class Cache:
     def __init__(self, ydl):
         self._ydl = ydl
 
@@ -31,7 +28,7 @@ class Cache(object):
             'invalid section %r' % section
         assert re.match(r'^[a-zA-Z0-9_.-]+$', key), 'invalid key %r' % key
         return os.path.join(
-            self._get_root_dir(), section, '%s.%s' % (key, dtype))
+            self._get_root_dir(), section, f'{key}.{dtype}')
 
     @property
     def enabled(self):
@@ -54,8 +51,7 @@ class Cache(object):
             write_json_file(data, fn)
         except Exception:
             tb = traceback.format_exc()
-            self._ydl.report_warning(
-                'Writing cache to %r failed: %s' % (fn, tb))
+            self._ydl.report_warning(f'Writing cache to {fn!r} failed: {tb}')
 
     def load(self, section, key, dtype='json', default=None):
         assert dtype in ('json',)
@@ -66,17 +62,16 @@ class Cache(object):
         cache_fn = self._get_cache_fn(section, key, dtype)
         try:
             try:
-                with io.open(cache_fn, 'r', encoding='utf-8') as cachef:
+                with open(cache_fn, encoding='utf-8') as cachef:
                     self._ydl.write_debug(f'Loading {section}.{key} from cache')
                     return json.load(cachef)
             except ValueError:
                 try:
                     file_size = os.path.getsize(cache_fn)
-                except (OSError, IOError) as oe:
+                except OSError as oe:
                     file_size = str(oe)
-                self._ydl.report_warning(
-                    'Cache retrieval from %s failed (%s)' % (cache_fn, file_size))
-        except IOError:
+                self._ydl.report_warning(f'Cache retrieval from {cache_fn} failed ({file_size})')
+        except OSError:
             pass  # No cache available
 
         return default
diff --git a/yt_dlp/compat.py b/yt_dlp/compat.py
index 5bac87c105..7a15004350 100644
--- a/yt_dlp/compat.py
+++ b/yt_dlp/compat.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 import asyncio
 import base64
 import collections
diff --git a/yt_dlp/cookies.py b/yt_dlp/cookies.py
index 3476595d3d..1d92fd8ce9 100644
--- a/yt_dlp/cookies.py
+++ b/yt_dlp/cookies.py
@@ -125,7 +125,7 @@ def extract_cookies_from_browser(browser_name, profile=None, logger=YDLLogger(),
     elif browser_name in CHROMIUM_BASED_BROWSERS:
         return _extract_chrome_cookies(browser_name, profile, keyring, logger)
     else:
-        raise ValueError('unknown browser: {}'.format(browser_name))
+        raise ValueError(f'unknown browser: {browser_name}')
 
 
 def _extract_firefox_cookies(profile, logger):
@@ -144,8 +144,8 @@ def _extract_firefox_cookies(profile, logger):
 
     cookie_database_path = _find_most_recently_used_file(search_root, 'cookies.sqlite', logger)
     if cookie_database_path is None:
-        raise FileNotFoundError('could not find firefox cookies database in {}'.format(search_root))
-    logger.debug('Extracting cookies from: "{}"'.format(cookie_database_path))
+        raise FileNotFoundError(f'could not find firefox cookies database in {search_root}')
+    logger.debug(f'Extracting cookies from: "{cookie_database_path}"')
 
     with tempfile.TemporaryDirectory(prefix='yt_dlp') as tmpdir:
         cursor = None
@@ -164,7 +164,7 @@ def _extract_firefox_cookies(profile, logger):
                         path=path, path_specified=bool(path), secure=is_secure, expires=expiry, discard=False,
                         comment=None, comment_url=None, rest={})
                     jar.set_cookie(cookie)
-            logger.info('Extracted {} cookies from firefox'.format(len(jar)))
+            logger.info(f'Extracted {len(jar)} cookies from firefox')
             return jar
         finally:
             if cursor is not None:
@@ -179,7 +179,7 @@ def _firefox_browser_dir():
     elif sys.platform == 'darwin':
         return os.path.expanduser('~/Library/Application Support/Firefox')
     else:
-        raise ValueError('unsupported platform: {}'.format(sys.platform))
+        raise ValueError(f'unsupported platform: {sys.platform}')
 
 
 def _get_chromium_based_browser_settings(browser_name):
@@ -219,7 +219,7 @@ def _get_chromium_based_browser_settings(browser_name):
         }[browser_name]
 
     else:
-        raise ValueError('unsupported platform: {}'.format(sys.platform))
+        raise ValueError(f'unsupported platform: {sys.platform}')
 
     # Linux keyring names can be determined by snooping on dbus while opening the browser in KDE:
     # dbus-monitor "interface='org.kde.KWallet'" "type=method_return"
@@ -242,7 +242,7 @@ def _get_chromium_based_browser_settings(browser_name):
 
 
 def _extract_chrome_cookies(browser_name, profile, keyring, logger):
-    logger.info('Extracting cookies from {}'.format(browser_name))
+    logger.info(f'Extracting cookies from {browser_name}')
 
     if not SQLITE_AVAILABLE:
         logger.warning(('Cannot extract cookies from {} without sqlite3 support. '
@@ -260,13 +260,13 @@ def _extract_chrome_cookies(browser_name, profile, keyring, logger):
         if config['supports_profiles']:
             search_root = os.path.join(config['browser_dir'], profile)
         else:
-            logger.error('{} does not support profiles'.format(browser_name))
+            logger.error(f'{browser_name} does not support profiles')
             search_root = config['browser_dir']
 
     cookie_database_path = _find_most_recently_used_file(search_root, 'Cookies', logger)
     if cookie_database_path is None:
-        raise FileNotFoundError('could not find {} cookies database in "{}"'.format(browser_name, search_root))
-    logger.debug('Extracting cookies from: "{}"'.format(cookie_database_path))
+        raise FileNotFoundError(f'could not find {browser_name} cookies database in "{search_root}"')
+    logger.debug(f'Extracting cookies from: "{cookie_database_path}"')
 
     decryptor = get_cookie_decryptor(config['browser_dir'], config['keyring_name'], logger, keyring=keyring)
 
@@ -295,13 +295,13 @@ def _extract_chrome_cookies(browser_name, profile, keyring, logger):
                         unencrypted_cookies += 1
                     jar.set_cookie(cookie)
             if failed_cookies > 0:
-                failed_message = ' ({} could not be decrypted)'.format(failed_cookies)
+                failed_message = f' ({failed_cookies} could not be decrypted)'
             else:
                 failed_message = ''
-            logger.info('Extracted {} cookies from {}{}'.format(len(jar), browser_name, failed_message))
+            logger.info(f'Extracted {len(jar)} cookies from {browser_name}{failed_message}')
             counts = decryptor.cookie_counts.copy()
             counts['unencrypted'] = unencrypted_cookies
-            logger.debug('cookie version breakdown: {}'.format(counts))
+            logger.debug(f'cookie version breakdown: {counts}')
             return jar
         finally:
             if cursor is not None:
@@ -492,7 +492,7 @@ def _extract_safari_cookies(profile, logger):
     if profile is not None:
         logger.error('safari does not support profiles')
     if sys.platform != 'darwin':
-        raise ValueError('unsupported platform: {}'.format(sys.platform))
+        raise ValueError(f'unsupported platform: {sys.platform}')
 
     cookies_path = os.path.expanduser('~/Library/Cookies/Cookies.binarycookies')
 
@@ -506,7 +506,7 @@ def _extract_safari_cookies(profile, logger):
         cookies_data = f.read()
 
     jar = parse_safari_cookies(cookies_data, logger=logger)
-    logger.info('Extracted {} cookies from safari'.format(len(jar)))
+    logger.info(f'Extracted {len(jar)} cookies from safari')
     return jar
 
 
@@ -522,7 +522,7 @@ class DataParser:
 
     def read_bytes(self, num_bytes):
         if num_bytes < 0:
-            raise ParserError('invalid read of {} bytes'.format(num_bytes))
+            raise ParserError(f'invalid read of {num_bytes} bytes')
         end = self.cursor + num_bytes
         if end > len(self._data):
             raise ParserError('reached end of input')
@@ -533,7 +533,7 @@ class DataParser:
     def expect_bytes(self, expected_value, message):
         value = self.read_bytes(len(expected_value))
         if value != expected_value:
-            raise ParserError('unexpected value: {} != {} ({})'.format(value, expected_value, message))
+            raise ParserError(f'unexpected value: {value} != {expected_value} ({message})')
 
     def read_uint(self, big_endian=False):
         data_format = '>I' if big_endian else '<I'
@@ -557,7 +557,7 @@ class DataParser:
             self._logger.debug('skipping {} bytes ({}): {}'.format(
                 num_bytes, description, self.read_bytes(num_bytes)))
         elif num_bytes < 0:
-            raise ParserError('invalid skip of {} bytes'.format(num_bytes))
+            raise ParserError(f'invalid skip of {num_bytes} bytes')
 
     def skip_to(self, offset, description='unknown'):
         self.skip(offset - self.cursor, description)
@@ -584,7 +584,7 @@ def _parse_safari_cookies_page(data, jar, logger):
     number_of_cookies = p.read_uint()
     record_offsets = [p.read_uint() for _ in range(number_of_cookies)]
     if number_of_cookies == 0:
-        logger.debug('a cookies page of size {} has no cookies'.format(len(data)))
+        logger.debug(f'a cookies page of size {len(data)} has no cookies')
         return
 
     p.skip_to(record_offsets[0], 'unknown page header field')
@@ -730,7 +730,7 @@ def _choose_linux_keyring(logger):
     SelectBackend
     """
     desktop_environment = _get_linux_desktop_environment(os.environ)
-    logger.debug('detected desktop environment: {}'.format(desktop_environment.name))
+    logger.debug(f'detected desktop environment: {desktop_environment.name}')
     if desktop_environment == _LinuxDesktopEnvironment.KDE:
         linux_keyring = _LinuxKeyring.KWALLET
     elif desktop_environment == _LinuxDesktopEnvironment.OTHER:
@@ -764,10 +764,10 @@ def _get_kwallet_network_wallet(logger):
             return default_wallet
         else:
             network_wallet = stdout.decode('utf-8').strip()
-            logger.debug('NetworkWallet = "{}"'.format(network_wallet))
+            logger.debug(f'NetworkWallet = "{network_wallet}"')
             return network_wallet
     except Exception as e:
-        logger.warning('exception while obtaining NetworkWallet: {}'.format(e))
+        logger.warning(f'exception while obtaining NetworkWallet: {e}')
         return default_wallet
 
 
@@ -785,8 +785,8 @@ def _get_kwallet_password(browser_keyring_name, logger):
     try:
         proc = Popen([
             'kwallet-query',
-            '--read-password', '{} Safe Storage'.format(browser_keyring_name),
-            '--folder', '{} Keys'.format(browser_keyring_name),
+            '--read-password', f'{browser_keyring_name} Safe Storage',
+            '--folder', f'{browser_keyring_name} Keys',
             network_wallet
         ], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
 
@@ -818,7 +818,7 @@ def _get_kwallet_password(browser_keyring_name, logger):
 
 def _get_gnome_keyring_password(browser_keyring_name, logger):
     if not SECRETSTORAGE_AVAILABLE:
-        logger.error('secretstorage not available {}'.format(SECRETSTORAGE_UNAVAILABLE_REASON))
+        logger.error(f'secretstorage not available {SECRETSTORAGE_UNAVAILABLE_REASON}')
         return b''
     # the Gnome keyring does not seem to organise keys in the same way as KWallet,
     # using `dbus-monitor` during startup, it can be observed that chromium lists all keys
@@ -827,7 +827,7 @@ def _get_gnome_keyring_password(browser_keyring_name, logger):
     with contextlib.closing(secretstorage.dbus_init()) as con:
         col = secretstorage.get_default_collection(con)
         for item in col.get_all_items():
-            if item.get_label() == '{} Safe Storage'.format(browser_keyring_name):
+            if item.get_label() == f'{browser_keyring_name} Safe Storage':
                 return item.get_secret()
         else:
             logger.error('failed to read from keyring')
@@ -861,7 +861,7 @@ def _get_mac_keyring_password(browser_keyring_name, logger):
             ['security', 'find-generic-password',
              '-w',  # write password to stdout
              '-a', browser_keyring_name,  # match 'account'
-             '-s', '{} Safe Storage'.format(browser_keyring_name)],  # match 'service'
+             '-s', f'{browser_keyring_name} Safe Storage'],  # match 'service'
             stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
 
         stdout, stderr = proc.communicate_or_kill()
@@ -879,7 +879,7 @@ def _get_windows_v10_key(browser_root, logger):
         logger.error('could not find local state file')
         return None
     logger.debug(f'Found local state file at "{path}"')
-    with open(path, 'r', encoding='utf8') as f:
+    with open(path, encoding='utf8') as f:
         data = json.load(f)
     try:
         base64_key = data['os_crypt']['encrypted_key']
@@ -966,7 +966,7 @@ def _open_database_copy(database_path, tmpdir):
 
 
 def _get_column_names(cursor, table_name):
-    table_info = cursor.execute('PRAGMA table_info({})'.format(table_name)).fetchall()
+    table_info = cursor.execute(f'PRAGMA table_info({table_name})').fetchall()
     return [row[1].decode('utf-8') for row in table_info]
 
 
diff --git a/yt_dlp/downloader/__init__.py b/yt_dlp/downloader/__init__.py
index 96d484dee8..f5abfd5df7 100644
--- a/yt_dlp/downloader/__init__.py
+++ b/yt_dlp/downloader/__init__.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from ..compat import compat_str
 from ..utils import (
     determine_protocol,
diff --git a/yt_dlp/downloader/common.py b/yt_dlp/downloader/common.py
index cbfea7a65a..d42539931a 100644
--- a/yt_dlp/downloader/common.py
+++ b/yt_dlp/downloader/common.py
@@ -1,5 +1,3 @@
-from __future__ import division, unicode_literals
-
 import os
 import re
 import time
@@ -25,7 +23,7 @@ from ..minicurses import (
 )
 
 
-class FileDownloader(object):
+class FileDownloader:
     """File Downloader class.
 
     File downloader objects are the ones responsible of downloading the
@@ -219,7 +217,7 @@ class FileDownloader(object):
                 while True:
                     try:
                         return func(self, *args, **kwargs)
-                    except (IOError, OSError) as err:
+                    except OSError as err:
                         retry = retry + 1
                         if retry > file_access_retries or err.errno not in (errno.EACCES, errno.EINVAL):
                             if not fatal:
@@ -486,4 +484,4 @@ class FileDownloader(object):
         if exe is None:
             exe = os.path.basename(str_args[0])
 
-        self.write_debug('%s command line: %s' % (exe, shell_quote(str_args)))
+        self.write_debug(f'{exe} command line: {shell_quote(str_args)}')
diff --git a/yt_dlp/downloader/dash.py b/yt_dlp/downloader/dash.py
index a845ee7d3d..64eb5e66af 100644
--- a/yt_dlp/downloader/dash.py
+++ b/yt_dlp/downloader/dash.py
@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import time
 
 from ..downloader import get_suitable_downloader
@@ -46,7 +45,7 @@ class DashSegmentsFD(FragmentFD):
 
             if real_downloader:
                 self.to_screen(
-                    '[%s] Fragment downloads will be delegated to %s' % (self.FD_NAME, real_downloader.get_basename()))
+                    f'[{self.FD_NAME}] Fragment downloads will be delegated to {real_downloader.get_basename()}')
                 info_dict['fragments'] = list(fragments_to_download)
                 fd = real_downloader(self.ydl, self.params)
                 return fd.real_download(filename, info_dict)
diff --git a/yt_dlp/downloader/external.py b/yt_dlp/downloader/external.py
index 71af705ea7..b6dd327018 100644
--- a/yt_dlp/downloader/external.py
+++ b/yt_dlp/downloader/external.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import os.path
 import re
 import subprocess
@@ -56,7 +54,7 @@ class ExternalFD(FragmentFD):
             }
             if filename != '-':
                 fsize = os.path.getsize(encodeFilename(tmpfilename))
-                self.to_screen('\r[%s] Downloaded %s bytes' % (self.get_basename(), fsize))
+                self.to_screen(f'\r[{self.get_basename()}] Downloaded {fsize} bytes')
                 self.try_rename(tmpfilename, filename)
                 status.update({
                     'downloaded_bytes': fsize,
@@ -157,7 +155,7 @@ class ExternalFD(FragmentFD):
             fragment_filename = '%s-Frag%d' % (tmpfilename, frag_index)
             try:
                 src, _ = self.sanitize_open(fragment_filename, 'rb')
-            except IOError as err:
+            except OSError as err:
                 if skip_unavailable_fragments and frag_index > 1:
                     self.report_skip_fragment(frag_index, err)
                     continue
@@ -179,7 +177,7 @@ class CurlFD(ExternalFD):
         cmd = [self.exe, '--location', '-o', tmpfilename, '--compressed']
         if info_dict.get('http_headers') is not None:
             for key, val in info_dict['http_headers'].items():
-                cmd += ['--header', '%s: %s' % (key, val)]
+                cmd += ['--header', f'{key}: {val}']
 
         cmd += self._bool_option('--continue-at', 'continuedl', '-', '0')
         cmd += self._valueless_option('--silent', 'noprogress')
@@ -216,7 +214,7 @@ class AxelFD(ExternalFD):
         cmd = [self.exe, '-o', tmpfilename]
         if info_dict.get('http_headers') is not None:
             for key, val in info_dict['http_headers'].items():
-                cmd += ['-H', '%s: %s' % (key, val)]
+                cmd += ['-H', f'{key}: {val}']
         cmd += self._configuration_args()
         cmd += ['--', info_dict['url']]
         return cmd
@@ -229,7 +227,7 @@ class WgetFD(ExternalFD):
         cmd = [self.exe, '-O', tmpfilename, '-nv', '--no-cookies', '--compression=auto']
         if info_dict.get('http_headers') is not None:
             for key, val in info_dict['http_headers'].items():
-                cmd += ['--header', '%s: %s' % (key, val)]
+                cmd += ['--header', f'{key}: {val}']
         cmd += self._option('--limit-rate', 'ratelimit')
         retry = self._option('--tries', 'retries')
         if len(retry) == 2:
@@ -240,7 +238,7 @@ class WgetFD(ExternalFD):
         proxy = self.params.get('proxy')
         if proxy:
             for var in ('http_proxy', 'https_proxy'):
-                cmd += ['--execute', '%s=%s' % (var, proxy)]
+                cmd += ['--execute', f'{var}={proxy}']
         cmd += self._valueless_option('--no-check-certificate', 'nocheckcertificate')
         cmd += self._configuration_args()
         cmd += ['--', info_dict['url']]
@@ -271,7 +269,7 @@ class Aria2cFD(ExternalFD):
 
         if info_dict.get('http_headers') is not None:
             for key, val in info_dict['http_headers'].items():
-                cmd += ['--header', '%s: %s' % (key, val)]
+                cmd += ['--header', f'{key}: {val}']
         cmd += self._option('--max-overall-download-limit', 'ratelimit')
         cmd += self._option('--interface', 'source_address')
         cmd += self._option('--all-proxy', 'proxy')
@@ -289,10 +287,10 @@ class Aria2cFD(ExternalFD):
         dn = os.path.dirname(tmpfilename)
         if dn:
             if not os.path.isabs(dn):
-                dn = '.%s%s' % (os.path.sep, dn)
+                dn = f'.{os.path.sep}{dn}'
             cmd += ['--dir', dn + os.path.sep]
         if 'fragments' not in info_dict:
-            cmd += ['--out', '.%s%s' % (os.path.sep, os.path.basename(tmpfilename))]
+            cmd += ['--out', f'.{os.path.sep}{os.path.basename(tmpfilename)}']
         cmd += ['--auto-file-renaming=false']
 
         if 'fragments' in info_dict:
@@ -320,7 +318,7 @@ class HttpieFD(ExternalFD):
 
         if info_dict.get('http_headers') is not None:
             for key, val in info_dict['http_headers'].items():
-                cmd += ['%s:%s' % (key, val)]
+                cmd += [f'{key}:{val}']
         return cmd
 
 
@@ -393,7 +391,7 @@ class FFmpegFD(ExternalFD):
             headers = handle_youtubedl_headers(info_dict['http_headers'])
             args += [
                 '-headers',
-                ''.join('%s: %s\r\n' % (key, val) for key, val in headers.items())]
+                ''.join(f'{key}: {val}\r\n' for key, val in headers.items())]
 
         env = None
         proxy = self.params.get('proxy')
diff --git a/yt_dlp/downloader/f4m.py b/yt_dlp/downloader/f4m.py
index 0008b7c286..4140710751 100644
--- a/yt_dlp/downloader/f4m.py
+++ b/yt_dlp/downloader/f4m.py
@@ -1,5 +1,3 @@
-from __future__ import division, unicode_literals
-
 import io
 import itertools
 import time
diff --git a/yt_dlp/downloader/fc2.py b/yt_dlp/downloader/fc2.py
index 157bcf23eb..d503aac042 100644
--- a/yt_dlp/downloader/fc2.py
+++ b/yt_dlp/downloader/fc2.py
@@ -1,5 +1,3 @@
-from __future__ import division, unicode_literals
-
 import threading
 
 from .common import FileDownloader
diff --git a/yt_dlp/downloader/fragment.py b/yt_dlp/downloader/fragment.py
index c45a8a4767..217b89e3fe 100644
--- a/yt_dlp/downloader/fragment.py
+++ b/yt_dlp/downloader/fragment.py
@@ -1,5 +1,3 @@
-from __future__ import division, unicode_literals
-
 import http.client
 import json
 import math
@@ -172,8 +170,7 @@ class FragmentFD(FileDownloader):
                 total_frags_str += ' (not including %d ad)' % ad_frags
         else:
             total_frags_str = 'unknown (live)'
-        self.to_screen(
-            '[%s] Total fragments: %s' % (self.FD_NAME, total_frags_str))
+        self.to_screen(f'[{self.FD_NAME}] Total fragments: {total_frags_str}')
         self.report_destination(ctx['filename'])
         dl = HttpQuietDownloader(
             self.ydl,
@@ -342,8 +339,7 @@ class FragmentFD(FileDownloader):
                 total_frags_str += ' (not including %d ad)' % ad_frags
         else:
             total_frags_str = 'unknown (live)'
-        self.to_screen(
-            '[%s] Total fragments: %s' % (self.FD_NAME, total_frags_str))
+        self.to_screen(f'[{self.FD_NAME}] Total fragments: {total_frags_str}')
 
         tmpfilename = self.temp_name(ctx['filename'])
 
diff --git a/yt_dlp/downloader/hls.py b/yt_dlp/downloader/hls.py
index e932fd6aea..00695f93fc 100644
--- a/yt_dlp/downloader/hls.py
+++ b/yt_dlp/downloader/hls.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 import io
 import binascii
@@ -102,8 +100,7 @@ class HlsFD(FragmentFD):
         if real_downloader and not real_downloader.supports_manifest(s):
             real_downloader = None
         if real_downloader:
-            self.to_screen(
-                '[%s] Fragment downloads will be delegated to %s' % (self.FD_NAME, real_downloader.get_basename()))
+            self.to_screen(f'[{self.FD_NAME}] Fragment downloads will be delegated to {real_downloader.get_basename()}')
 
         def is_ad_fragment_start(s):
             return (s.startswith('#ANVATO-SEGMENT-INFO') and 'type=ad' in s
diff --git a/yt_dlp/downloader/http.py b/yt_dlp/downloader/http.py
index a232168fa3..03efbf1cdb 100644
--- a/yt_dlp/downloader/http.py
+++ b/yt_dlp/downloader/http.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import os
 import ssl
 import time
@@ -221,10 +219,12 @@ class HttpFD(FileDownloader):
                 min_data_len = self.params.get('min_filesize')
                 max_data_len = self.params.get('max_filesize')
                 if min_data_len is not None and data_len < min_data_len:
-                    self.to_screen('\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len))
+                    self.to_screen(
+                        f'\r[download] File is smaller than min-filesize ({data_len} bytes < {min_data_len} bytes). Aborting.')
                     return False
                 if max_data_len is not None and data_len > max_data_len:
-                    self.to_screen('\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
+                    self.to_screen(
+                        f'\r[download] File is larger than max-filesize ({data_len} bytes > {max_data_len} bytes). Aborting.')
                     return False
 
             byte_counter = 0 + ctx.resume_len
@@ -265,7 +265,7 @@ class HttpFD(FileDownloader):
                         assert ctx.stream is not None
                         ctx.filename = self.undo_temp_name(ctx.tmpfilename)
                         self.report_destination(ctx.filename)
-                    except (OSError, IOError) as err:
+                    except OSError as err:
                         self.report_error('unable to open for writing: %s' % str(err))
                         return False
 
@@ -277,7 +277,7 @@ class HttpFD(FileDownloader):
 
                 try:
                     ctx.stream.write(data_block)
-                except (IOError, OSError) as err:
+                except OSError as err:
                     self.to_stderr('\n')
                     self.report_error('unable to write data: %s' % str(err))
                     return False
diff --git a/yt_dlp/downloader/ism.py b/yt_dlp/downloader/ism.py
index 2ba36085ea..ca4ca3a198 100644
--- a/yt_dlp/downloader/ism.py
+++ b/yt_dlp/downloader/ism.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import time
 import binascii
 import io
diff --git a/yt_dlp/downloader/mhtml.py b/yt_dlp/downloader/mhtml.py
index 54e7117925..5a322f1db7 100644
--- a/yt_dlp/downloader/mhtml.py
+++ b/yt_dlp/downloader/mhtml.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import io
 import quopri
 import re
diff --git a/yt_dlp/downloader/niconico.py b/yt_dlp/downloader/niconico.py
index 521dfece31..0e6c177b73 100644
--- a/yt_dlp/downloader/niconico.py
+++ b/yt_dlp/downloader/niconico.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import threading
 
 from .common import FileDownloader
diff --git a/yt_dlp/downloader/rtmp.py b/yt_dlp/downloader/rtmp.py
index 90f1acfd44..12aa04cf3c 100644
--- a/yt_dlp/downloader/rtmp.py
+++ b/yt_dlp/downloader/rtmp.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import os
 import re
 import subprocess
diff --git a/yt_dlp/downloader/rtsp.py b/yt_dlp/downloader/rtsp.py
index 7815d59d97..26dbd9ef75 100644
--- a/yt_dlp/downloader/rtsp.py
+++ b/yt_dlp/downloader/rtsp.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import os
 import subprocess
 
@@ -32,7 +30,7 @@ class RtspFD(FileDownloader):
         retval = subprocess.call(args)
         if retval == 0:
             fsize = os.path.getsize(encodeFilename(tmpfilename))
-            self.to_screen('\r[%s] %s bytes' % (args[0], fsize))
+            self.to_screen(f'\r[{args[0]}] {fsize} bytes')
             self.try_rename(tmpfilename, filename)
             self._hook_progress({
                 'downloaded_bytes': fsize,
diff --git a/yt_dlp/downloader/youtube_live_chat.py b/yt_dlp/downloader/youtube_live_chat.py
index cfca686ee4..36c82b03bd 100644
--- a/yt_dlp/downloader/youtube_live_chat.py
+++ b/yt_dlp/downloader/youtube_live_chat.py
@@ -1,5 +1,3 @@
-from __future__ import division, unicode_literals
-
 import json
 import time
 
diff --git a/yt_dlp/extractor/abc.py b/yt_dlp/extractor/abc.py
index 6fe195e82c..03f10ab23d 100644
--- a/yt_dlp/extractor/abc.py
+++ b/yt_dlp/extractor/abc.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import hashlib
 import hmac
 import re
diff --git a/yt_dlp/extractor/abcnews.py b/yt_dlp/extractor/abcnews.py
index 296b8cec1d..a57295b131 100644
--- a/yt_dlp/extractor/abcnews.py
+++ b/yt_dlp/extractor/abcnews.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .amp import AMPIE
 from .common import InfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/abcotvs.py b/yt_dlp/extractor/abcotvs.py
index 5bff466340..44a9f8ca5e 100644
--- a/yt_dlp/extractor/abcotvs.py
+++ b/yt_dlp/extractor/abcotvs.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/academicearth.py b/yt_dlp/extractor/academicearth.py
index 34095501cf..d9691cb5c6 100644
--- a/yt_dlp/extractor/academicearth.py
+++ b/yt_dlp/extractor/academicearth.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/acast.py b/yt_dlp/extractor/acast.py
index 63587c5cff..f2f828f8e7 100644
--- a/yt_dlp/extractor/acast.py
+++ b/yt_dlp/extractor/acast.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/adn.py b/yt_dlp/extractor/adn.py
index fca6e605da..b47345e3c5 100644
--- a/yt_dlp/extractor/adn.py
+++ b/yt_dlp/extractor/adn.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import binascii
 import json
diff --git a/yt_dlp/extractor/adobeconnect.py b/yt_dlp/extractor/adobeconnect.py
index e2e6f93f31..8963b128a5 100644
--- a/yt_dlp/extractor/adobeconnect.py
+++ b/yt_dlp/extractor/adobeconnect.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_parse_qs,
diff --git a/yt_dlp/extractor/adobepass.py b/yt_dlp/extractor/adobepass.py
index 1292484c69..1bdc8587cc 100644
--- a/yt_dlp/extractor/adobepass.py
+++ b/yt_dlp/extractor/adobepass.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 import time
diff --git a/yt_dlp/extractor/adobetv.py b/yt_dlp/extractor/adobetv.py
index 3cfa1ff550..941254243f 100644
--- a/yt_dlp/extractor/adobetv.py
+++ b/yt_dlp/extractor/adobetv.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/adultswim.py b/yt_dlp/extractor/adultswim.py
index c97cfc1611..1368954bc6 100644
--- a/yt_dlp/extractor/adultswim.py
+++ b/yt_dlp/extractor/adultswim.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .turner import TurnerBaseIE
diff --git a/yt_dlp/extractor/aenetworks.py b/yt_dlp/extractor/aenetworks.py
index 8025de5a32..86a10f2dcd 100644
--- a/yt_dlp/extractor/aenetworks.py
+++ b/yt_dlp/extractor/aenetworks.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .theplatform import ThePlatformIE
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/afreecatv.py b/yt_dlp/extractor/afreecatv.py
index 44bfb8bc24..b0fd158f61 100644
--- a/yt_dlp/extractor/afreecatv.py
+++ b/yt_dlp/extractor/afreecatv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/airmozilla.py b/yt_dlp/extractor/airmozilla.py
index 9e38136b4b..669556b98f 100644
--- a/yt_dlp/extractor/airmozilla.py
+++ b/yt_dlp/extractor/airmozilla.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/aliexpress.py b/yt_dlp/extractor/aliexpress.py
index 9722fe9ac3..2e83f2eb6e 100644
--- a/yt_dlp/extractor/aliexpress.py
+++ b/yt_dlp/extractor/aliexpress.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/aljazeera.py b/yt_dlp/extractor/aljazeera.py
index 7bcdb7afba..124bab0d92 100644
--- a/yt_dlp/extractor/aljazeera.py
+++ b/yt_dlp/extractor/aljazeera.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/allocine.py b/yt_dlp/extractor/allocine.py
index 403a277e97..1f881e2a09 100644
--- a/yt_dlp/extractor/allocine.py
+++ b/yt_dlp/extractor/allocine.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/alphaporno.py b/yt_dlp/extractor/alphaporno.py
index 3a6d99f6bf..8d5b472d32 100644
--- a/yt_dlp/extractor/alphaporno.py
+++ b/yt_dlp/extractor/alphaporno.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_iso8601,
diff --git a/yt_dlp/extractor/alsace20tv.py b/yt_dlp/extractor/alsace20tv.py
index 4aae6fe743..d16ab496e9 100644
--- a/yt_dlp/extractor/alsace20tv.py
+++ b/yt_dlp/extractor/alsace20tv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/alura.py b/yt_dlp/extractor/alura.py
index d2e2df2707..b76ccb2a19 100644
--- a/yt_dlp/extractor/alura.py
+++ b/yt_dlp/extractor/alura.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/amara.py b/yt_dlp/extractor/amara.py
index 61d469574a..5018710e03 100644
--- a/yt_dlp/extractor/amara.py
+++ b/yt_dlp/extractor/amara.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .youtube import YoutubeIE
 from .vimeo import VimeoIE
diff --git a/yt_dlp/extractor/amazon.py b/yt_dlp/extractor/amazon.py
index 07b1b18611..de4917adcc 100644
--- a/yt_dlp/extractor/amazon.py
+++ b/yt_dlp/extractor/amazon.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/amcnetworks.py b/yt_dlp/extractor/amcnetworks.py
index e38e215d3f..e04ecf65f0 100644
--- a/yt_dlp/extractor/amcnetworks.py
+++ b/yt_dlp/extractor/amcnetworks.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .theplatform import ThePlatformIE
diff --git a/yt_dlp/extractor/americastestkitchen.py b/yt_dlp/extractor/americastestkitchen.py
index 6e6099a03d..f5747cf1e8 100644
--- a/yt_dlp/extractor/americastestkitchen.py
+++ b/yt_dlp/extractor/americastestkitchen.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/amp.py b/yt_dlp/extractor/amp.py
index 24c684cad7..73b72b0859 100644
--- a/yt_dlp/extractor/amp.py
+++ b/yt_dlp/extractor/amp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/animelab.py b/yt_dlp/extractor/animelab.py
index 1c2cc47ddd..cd0d77805d 100644
--- a/yt_dlp/extractor/animelab.py
+++ b/yt_dlp/extractor/animelab.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/animeondemand.py b/yt_dlp/extractor/animeondemand.py
index 2e674d58fc..de49db4ea7 100644
--- a/yt_dlp/extractor/animeondemand.py
+++ b/yt_dlp/extractor/animeondemand.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ant1newsgr.py b/yt_dlp/extractor/ant1newsgr.py
index 1075b461ed..cd0f368569 100644
--- a/yt_dlp/extractor/ant1newsgr.py
+++ b/yt_dlp/extractor/ant1newsgr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import urllib.parse
 
diff --git a/yt_dlp/extractor/anvato.py b/yt_dlp/extractor/anvato.py
index 0d444fc33e..28fbd606ef 100644
--- a/yt_dlp/extractor/anvato.py
+++ b/yt_dlp/extractor/anvato.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import hashlib
 import json
diff --git a/yt_dlp/extractor/anvato_token_generator/__init__.py b/yt_dlp/extractor/anvato_token_generator/__init__.py
index 6e223db9fc..6530caf530 100644
--- a/yt_dlp/extractor/anvato_token_generator/__init__.py
+++ b/yt_dlp/extractor/anvato_token_generator/__init__.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .nfl import NFLTokenGenerator
 
 __all__ = [
diff --git a/yt_dlp/extractor/anvato_token_generator/common.py b/yt_dlp/extractor/anvato_token_generator/common.py
index b959a903bd..3800b5808e 100644
--- a/yt_dlp/extractor/anvato_token_generator/common.py
+++ b/yt_dlp/extractor/anvato_token_generator/common.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 class TokenGenerator:
     def generate(self, anvack, mcp_id):
         raise NotImplementedError('This method must be implemented by subclasses')
diff --git a/yt_dlp/extractor/anvato_token_generator/nfl.py b/yt_dlp/extractor/anvato_token_generator/nfl.py
index 97a2b245f7..9ee4aa002e 100644
--- a/yt_dlp/extractor/anvato_token_generator/nfl.py
+++ b/yt_dlp/extractor/anvato_token_generator/nfl.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import TokenGenerator
diff --git a/yt_dlp/extractor/aol.py b/yt_dlp/extractor/aol.py
index 4766a2c774..b67db2adca 100644
--- a/yt_dlp/extractor/aol.py
+++ b/yt_dlp/extractor/aol.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .yahoo import YahooIE
diff --git a/yt_dlp/extractor/apa.py b/yt_dlp/extractor/apa.py
index 1736cdf566..847be6edf7 100644
--- a/yt_dlp/extractor/apa.py
+++ b/yt_dlp/extractor/apa.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/aparat.py b/yt_dlp/extractor/aparat.py
index 1057233cf4..cd6cd1c790 100644
--- a/yt_dlp/extractor/aparat.py
+++ b/yt_dlp/extractor/aparat.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     get_element_by_id,
diff --git a/yt_dlp/extractor/appleconnect.py b/yt_dlp/extractor/appleconnect.py
index 494f8330c1..d00b0f9060 100644
--- a/yt_dlp/extractor/appleconnect.py
+++ b/yt_dlp/extractor/appleconnect.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     str_to_int,
diff --git a/yt_dlp/extractor/applepodcasts.py b/yt_dlp/extractor/applepodcasts.py
index 9139ff777a..49bbeab823 100644
--- a/yt_dlp/extractor/applepodcasts.py
+++ b/yt_dlp/extractor/applepodcasts.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/appletrailers.py b/yt_dlp/extractor/appletrailers.py
index 8140e332be..6b63f070d6 100644
--- a/yt_dlp/extractor/appletrailers.py
+++ b/yt_dlp/extractor/appletrailers.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 import json
 
diff --git a/yt_dlp/extractor/archiveorg.py b/yt_dlp/extractor/archiveorg.py
index 2ab3c1bebd..c85d5297d3 100644
--- a/yt_dlp/extractor/archiveorg.py
+++ b/yt_dlp/extractor/archiveorg.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import json
 from .common import InfoExtractor
@@ -479,7 +476,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
 
     def _extract_yt_initial_variable(self, webpage, regex, video_id, name):
         return self._parse_json(self._search_regex(
-            (r'%s\s*%s' % (regex, self._YT_INITIAL_BOUNDARY_RE),
+            (fr'{regex}\s*{self._YT_INITIAL_BOUNDARY_RE}',
              regex), webpage, name, default='{}'), video_id, fatal=False)
 
     def _extract_webpage_title(self, webpage):
@@ -597,7 +594,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
         response = self._call_cdx_api(
             video_id, f'https://www.youtube.com/watch?v={video_id}',
             filters=['mimetype:text/html'], collapse=['timestamp:6', 'digest'], query={'matchType': 'prefix'}) or []
-        all_captures = sorted([int_or_none(r['timestamp']) for r in response if int_or_none(r['timestamp']) is not None])
+        all_captures = sorted(int_or_none(r['timestamp']) for r in response if int_or_none(r['timestamp']) is not None)
 
         # Prefer the new polymer UI captures as we support extracting more metadata from them
         # WBM captures seem to all switch to this layout ~July 2020
diff --git a/yt_dlp/extractor/arcpublishing.py b/yt_dlp/extractor/arcpublishing.py
index 8880e5c957..2e3f3cc5fb 100644
--- a/yt_dlp/extractor/arcpublishing.py
+++ b/yt_dlp/extractor/arcpublishing.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ard.py b/yt_dlp/extractor/ard.py
index 7ea339b399..f294679eff 100644
--- a/yt_dlp/extractor/ard.py
+++ b/yt_dlp/extractor/ard.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/arkena.py b/yt_dlp/extractor/arkena.py
index 4f4f457c16..9da2bfd5e0 100644
--- a/yt_dlp/extractor/arkena.py
+++ b/yt_dlp/extractor/arkena.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/arnes.py b/yt_dlp/extractor/arnes.py
index 050c252e3f..96b134fa0e 100644
--- a/yt_dlp/extractor/arnes.py
+++ b/yt_dlp/extractor/arnes.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_parse_qs,
diff --git a/yt_dlp/extractor/arte.py b/yt_dlp/extractor/arte.py
index c2f2c1bd3c..443b0d4b9e 100644
--- a/yt_dlp/extractor/arte.py
+++ b/yt_dlp/extractor/arte.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/asiancrush.py b/yt_dlp/extractor/asiancrush.py
index 7f1940fcab..23f310edb3 100644
--- a/yt_dlp/extractor/asiancrush.py
+++ b/yt_dlp/extractor/asiancrush.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/atresplayer.py b/yt_dlp/extractor/atresplayer.py
index 465af4ed34..39d1f1cc56 100644
--- a/yt_dlp/extractor/atresplayer.py
+++ b/yt_dlp/extractor/atresplayer.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_HTTPError
 from ..utils import (
diff --git a/yt_dlp/extractor/atttechchannel.py b/yt_dlp/extractor/atttechchannel.py
index 8f93fb3534..6ff4ec0ad3 100644
--- a/yt_dlp/extractor/atttechchannel.py
+++ b/yt_dlp/extractor/atttechchannel.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import unified_strdate
 
diff --git a/yt_dlp/extractor/atvat.py b/yt_dlp/extractor/atvat.py
index 481a09737a..2311837e91 100644
--- a/yt_dlp/extractor/atvat.py
+++ b/yt_dlp/extractor/atvat.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/audimedia.py b/yt_dlp/extractor/audimedia.py
index 6bd48ef159..c1c4f67d0a 100644
--- a/yt_dlp/extractor/audimedia.py
+++ b/yt_dlp/extractor/audimedia.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/audioboom.py b/yt_dlp/extractor/audioboom.py
index c51837b406..dc19a3874b 100644
--- a/yt_dlp/extractor/audioboom.py
+++ b/yt_dlp/extractor/audioboom.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/audiomack.py b/yt_dlp/extractor/audiomack.py
index 19775cf0f3..5c4160fe46 100644
--- a/yt_dlp/extractor/audiomack.py
+++ b/yt_dlp/extractor/audiomack.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import time
 
diff --git a/yt_dlp/extractor/audius.py b/yt_dlp/extractor/audius.py
index fa64995d50..189d1224fb 100644
--- a/yt_dlp/extractor/audius.py
+++ b/yt_dlp/extractor/audius.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/awaan.py b/yt_dlp/extractor/awaan.py
index f5e559c9f4..d289f6be30 100644
--- a/yt_dlp/extractor/awaan.py
+++ b/yt_dlp/extractor/awaan.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/aws.py b/yt_dlp/extractor/aws.py
index dccfeaf734..c2b22922be 100644
--- a/yt_dlp/extractor/aws.py
+++ b/yt_dlp/extractor/aws.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 import hashlib
 import hmac
diff --git a/yt_dlp/extractor/azmedien.py b/yt_dlp/extractor/azmedien.py
index 0168340b93..d1686eed64 100644
--- a/yt_dlp/extractor/azmedien.py
+++ b/yt_dlp/extractor/azmedien.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/baidu.py b/yt_dlp/extractor/baidu.py
index 364fd94591..8786d67e06 100644
--- a/yt_dlp/extractor/baidu.py
+++ b/yt_dlp/extractor/baidu.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import unescapeHTML
 
diff --git a/yt_dlp/extractor/banbye.py b/yt_dlp/extractor/banbye.py
index 3d4d36ec36..92f567c5db 100644
--- a/yt_dlp/extractor/banbye.py
+++ b/yt_dlp/extractor/banbye.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import math
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bandaichannel.py b/yt_dlp/extractor/bandaichannel.py
index f1bcdef7a3..2e32333761 100644
--- a/yt_dlp/extractor/bandaichannel.py
+++ b/yt_dlp/extractor/bandaichannel.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .brightcove import BrightcoveNewIE
 from ..utils import extract_attributes
 
diff --git a/yt_dlp/extractor/bandcamp.py b/yt_dlp/extractor/bandcamp.py
index 745055e2d5..5863eaeca6 100644
--- a/yt_dlp/extractor/bandcamp.py
+++ b/yt_dlp/extractor/bandcamp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 import re
 import time
diff --git a/yt_dlp/extractor/bannedvideo.py b/yt_dlp/extractor/bannedvideo.py
index 3db1151f6d..ec9bdd8cad 100644
--- a/yt_dlp/extractor/bannedvideo.py
+++ b/yt_dlp/extractor/bannedvideo.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bbc.py b/yt_dlp/extractor/bbc.py
index 5bc8d3110c..9cb019a491 100644
--- a/yt_dlp/extractor/bbc.py
+++ b/yt_dlp/extractor/bbc.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import xml.etree.ElementTree
 import functools
 import itertools
diff --git a/yt_dlp/extractor/beatport.py b/yt_dlp/extractor/beatport.py
index e1cf8b4fe7..f71f1f3080 100644
--- a/yt_dlp/extractor/beatport.py
+++ b/yt_dlp/extractor/beatport.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/beeg.py b/yt_dlp/extractor/beeg.py
index 717fff3a68..5957e370ab 100644
--- a/yt_dlp/extractor/beeg.py
+++ b/yt_dlp/extractor/beeg.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/behindkink.py b/yt_dlp/extractor/behindkink.py
index 2c97f9817d..ca4498150e 100644
--- a/yt_dlp/extractor/behindkink.py
+++ b/yt_dlp/extractor/behindkink.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import url_basename
 
diff --git a/yt_dlp/extractor/bellmedia.py b/yt_dlp/extractor/bellmedia.py
index 904c17ed00..8f9849d9b6 100644
--- a/yt_dlp/extractor/bellmedia.py
+++ b/yt_dlp/extractor/bellmedia.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/bet.py b/yt_dlp/extractor/bet.py
index 2c71442350..6b867d135f 100644
--- a/yt_dlp/extractor/bet.py
+++ b/yt_dlp/extractor/bet.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .mtv import MTVServicesInfoExtractor
 from ..utils import unified_strdate
 
diff --git a/yt_dlp/extractor/bfi.py b/yt_dlp/extractor/bfi.py
index 60c8944b53..76f0516a4d 100644
--- a/yt_dlp/extractor/bfi.py
+++ b/yt_dlp/extractor/bfi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bfmtv.py b/yt_dlp/extractor/bfmtv.py
index 501f69d802..48526e38b6 100644
--- a/yt_dlp/extractor/bfmtv.py
+++ b/yt_dlp/extractor/bfmtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bibeltv.py b/yt_dlp/extractor/bibeltv.py
index 56c2bfee87..fd20aadad4 100644
--- a/yt_dlp/extractor/bibeltv.py
+++ b/yt_dlp/extractor/bibeltv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/bigflix.py b/yt_dlp/extractor/bigflix.py
index 28e3e59f67..6b2797ca00 100644
--- a/yt_dlp/extractor/bigflix.py
+++ b/yt_dlp/extractor/bigflix.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bigo.py b/yt_dlp/extractor/bigo.py
index ddf76ac55c..f39e15002e 100644
--- a/yt_dlp/extractor/bigo.py
+++ b/yt_dlp/extractor/bigo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError, urlencode_postdata
 
diff --git a/yt_dlp/extractor/bild.py b/yt_dlp/extractor/bild.py
index b8dfbd42b4..f3dea33c46 100644
--- a/yt_dlp/extractor/bild.py
+++ b/yt_dlp/extractor/bild.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/bilibili.py b/yt_dlp/extractor/bilibili.py
index a9574758cc..eb2dcb0244 100644
--- a/yt_dlp/extractor/bilibili.py
+++ b/yt_dlp/extractor/bilibili.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 import base64
 import hashlib
 import itertools
diff --git a/yt_dlp/extractor/biobiochiletv.py b/yt_dlp/extractor/biobiochiletv.py
index dc86c57c5d..180c9656e3 100644
--- a/yt_dlp/extractor/biobiochiletv.py
+++ b/yt_dlp/extractor/biobiochiletv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/biqle.py b/yt_dlp/extractor/biqle.py
index 2b57bade3d..3a42344916 100644
--- a/yt_dlp/extractor/biqle.py
+++ b/yt_dlp/extractor/biqle.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .vk import VKIE
 from ..compat import compat_b64decode
diff --git a/yt_dlp/extractor/bitchute.py b/yt_dlp/extractor/bitchute.py
index dcae6f4cc8..c831092d4c 100644
--- a/yt_dlp/extractor/bitchute.py
+++ b/yt_dlp/extractor/bitchute.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/bitwave.py b/yt_dlp/extractor/bitwave.py
index e6e093f597..bd8eac1f13 100644
--- a/yt_dlp/extractor/bitwave.py
+++ b/yt_dlp/extractor/bitwave.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/blackboardcollaborate.py b/yt_dlp/extractor/blackboardcollaborate.py
index 8ae2941984..8f41c897ad 100644
--- a/yt_dlp/extractor/blackboardcollaborate.py
+++ b/yt_dlp/extractor/blackboardcollaborate.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import parse_iso8601
 
diff --git a/yt_dlp/extractor/bleacherreport.py b/yt_dlp/extractor/bleacherreport.py
index d1bf8e8293..8d8fabe331 100644
--- a/yt_dlp/extractor/bleacherreport.py
+++ b/yt_dlp/extractor/bleacherreport.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .amp import AMPIE
 from ..utils import (
diff --git a/yt_dlp/extractor/blinkx.py b/yt_dlp/extractor/blinkx.py
index d70a3b30ff..80531ccadd 100644
--- a/yt_dlp/extractor/blinkx.py
+++ b/yt_dlp/extractor/blinkx.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/blogger.py b/yt_dlp/extractor/blogger.py
index dba131cb05..d7aa7f94eb 100644
--- a/yt_dlp/extractor/blogger.py
+++ b/yt_dlp/extractor/blogger.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from ..utils import (
diff --git a/yt_dlp/extractor/bloomberg.py b/yt_dlp/extractor/bloomberg.py
index 2fbfad1ba0..c0aaeae02b 100644
--- a/yt_dlp/extractor/bloomberg.py
+++ b/yt_dlp/extractor/bloomberg.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bokecc.py b/yt_dlp/extractor/bokecc.py
index 6a89d36f49..0c081750e4 100644
--- a/yt_dlp/extractor/bokecc.py
+++ b/yt_dlp/extractor/bokecc.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_parse_qs
 from ..utils import ExtractorError
diff --git a/yt_dlp/extractor/bongacams.py b/yt_dlp/extractor/bongacams.py
index 4e346e7b6e..cbef0fc53a 100644
--- a/yt_dlp/extractor/bongacams.py
+++ b/yt_dlp/extractor/bongacams.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/bostonglobe.py b/yt_dlp/extractor/bostonglobe.py
index 57882fbeea..92f8ea2cb4 100644
--- a/yt_dlp/extractor/bostonglobe.py
+++ b/yt_dlp/extractor/bostonglobe.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/box.py b/yt_dlp/extractor/box.py
index 8214086a6f..5842de88a8 100644
--- a/yt_dlp/extractor/box.py
+++ b/yt_dlp/extractor/box.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bpb.py b/yt_dlp/extractor/bpb.py
index 98491975c6..388f1f94fb 100644
--- a/yt_dlp/extractor/bpb.py
+++ b/yt_dlp/extractor/bpb.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/br.py b/yt_dlp/extractor/br.py
index 0155827d8f..faac442e89 100644
--- a/yt_dlp/extractor/br.py
+++ b/yt_dlp/extractor/br.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/bravotv.py b/yt_dlp/extractor/bravotv.py
index 139d51c09f..d4895848e0 100644
--- a/yt_dlp/extractor/bravotv.py
+++ b/yt_dlp/extractor/bravotv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .adobepass import AdobePassIE
diff --git a/yt_dlp/extractor/breakcom.py b/yt_dlp/extractor/breakcom.py
index f38789f998..51c8c822fa 100644
--- a/yt_dlp/extractor/breakcom.py
+++ b/yt_dlp/extractor/breakcom.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from .youtube import YoutubeIE
 from ..utils import (
diff --git a/yt_dlp/extractor/breitbart.py b/yt_dlp/extractor/breitbart.py
index e029aa627f..a2b04fccee 100644
--- a/yt_dlp/extractor/breitbart.py
+++ b/yt_dlp/extractor/breitbart.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/brightcove.py b/yt_dlp/extractor/brightcove.py
index 60c853898a..936c34e158 100644
--- a/yt_dlp/extractor/brightcove.py
+++ b/yt_dlp/extractor/brightcove.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import re
 import struct
diff --git a/yt_dlp/extractor/businessinsider.py b/yt_dlp/extractor/businessinsider.py
index 73a57b1e4d..4b3f5e68b8 100644
--- a/yt_dlp/extractor/businessinsider.py
+++ b/yt_dlp/extractor/businessinsider.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .jwplatform import JWPlatformIE
 
diff --git a/yt_dlp/extractor/buzzfeed.py b/yt_dlp/extractor/buzzfeed.py
index ec411091ef..1b4cba63e2 100644
--- a/yt_dlp/extractor/buzzfeed.py
+++ b/yt_dlp/extractor/buzzfeed.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/byutv.py b/yt_dlp/extractor/byutv.py
index f4d5086ed7..eca2e294e7 100644
--- a/yt_dlp/extractor/byutv.py
+++ b/yt_dlp/extractor/byutv.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/c56.py b/yt_dlp/extractor/c56.py
index a853c530cc..1d98ea5983 100644
--- a/yt_dlp/extractor/c56.py
+++ b/yt_dlp/extractor/c56.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import js_to_json
 
diff --git a/yt_dlp/extractor/cableav.py b/yt_dlp/extractor/cableav.py
index 77efdf45af..3200b56771 100644
--- a/yt_dlp/extractor/cableav.py
+++ b/yt_dlp/extractor/cableav.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/callin.py b/yt_dlp/extractor/callin.py
index 1f3b7cfff9..fc5da70283 100644
--- a/yt_dlp/extractor/callin.py
+++ b/yt_dlp/extractor/callin.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import (
     traverse_obj,
diff --git a/yt_dlp/extractor/caltrans.py b/yt_dlp/extractor/caltrans.py
index 9ac740f7e9..e52dfb1706 100644
--- a/yt_dlp/extractor/caltrans.py
+++ b/yt_dlp/extractor/caltrans.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/cam4.py b/yt_dlp/extractor/cam4.py
index 2a3931fd07..4256b28e08 100644
--- a/yt_dlp/extractor/cam4.py
+++ b/yt_dlp/extractor/cam4.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/camdemy.py b/yt_dlp/extractor/camdemy.py
index 8f0c6c545c..c7079e4224 100644
--- a/yt_dlp/extractor/camdemy.py
+++ b/yt_dlp/extractor/camdemy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cammodels.py b/yt_dlp/extractor/cammodels.py
index 3dc19377b3..32fbffcc2c 100644
--- a/yt_dlp/extractor/cammodels.py
+++ b/yt_dlp/extractor/cammodels.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/camwithher.py b/yt_dlp/extractor/camwithher.py
index bbc5205fde..a0b3749edf 100644
--- a/yt_dlp/extractor/camwithher.py
+++ b/yt_dlp/extractor/camwithher.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/canalalpha.py b/yt_dlp/extractor/canalalpha.py
index 0365cb2f69..f2ec9355f4 100644
--- a/yt_dlp/extractor/canalalpha.py
+++ b/yt_dlp/extractor/canalalpha.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/canalc2.py b/yt_dlp/extractor/canalc2.py
index 407cc80848..c9bb94c402 100644
--- a/yt_dlp/extractor/canalc2.py
+++ b/yt_dlp/extractor/canalc2.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/canalplus.py b/yt_dlp/extractor/canalplus.py
index 211ea267a2..b184398e2d 100644
--- a/yt_dlp/extractor/canalplus.py
+++ b/yt_dlp/extractor/canalplus.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     # ExtractorError,
diff --git a/yt_dlp/extractor/canvas.py b/yt_dlp/extractor/canvas.py
index 8b9903774d..8eff4a57c1 100644
--- a/yt_dlp/extractor/canvas.py
+++ b/yt_dlp/extractor/canvas.py
@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import json
 
 
diff --git a/yt_dlp/extractor/carambatv.py b/yt_dlp/extractor/carambatv.py
index 7e5cc90fb5..087ea8aa08 100644
--- a/yt_dlp/extractor/carambatv.py
+++ b/yt_dlp/extractor/carambatv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/cartoonnetwork.py b/yt_dlp/extractor/cartoonnetwork.py
index 48b33617f2..4dd7ac46d4 100644
--- a/yt_dlp/extractor/cartoonnetwork.py
+++ b/yt_dlp/extractor/cartoonnetwork.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .turner import TurnerBaseIE
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/cbc.py b/yt_dlp/extractor/cbc.py
index fba8bf965f..cac3f1e9d0 100644
--- a/yt_dlp/extractor/cbc.py
+++ b/yt_dlp/extractor/cbc.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import json
 import base64
diff --git a/yt_dlp/extractor/cbs.py b/yt_dlp/extractor/cbs.py
index 2af36ea825..e32539c9e7 100644
--- a/yt_dlp/extractor/cbs.py
+++ b/yt_dlp/extractor/cbs.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .theplatform import ThePlatformFeedIE
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/cbsinteractive.py b/yt_dlp/extractor/cbsinteractive.py
index 9d4f754354..7abeecf78a 100644
--- a/yt_dlp/extractor/cbsinteractive.py
+++ b/yt_dlp/extractor/cbsinteractive.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .cbs import CBSIE
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/cbslocal.py b/yt_dlp/extractor/cbslocal.py
index 3b7e1a8b9f..c6495c95fe 100644
--- a/yt_dlp/extractor/cbslocal.py
+++ b/yt_dlp/extractor/cbslocal.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .anvato import AnvatoIE
 from .sendtonews import SendtoNewsIE
 from ..compat import compat_urlparse
diff --git a/yt_dlp/extractor/cbsnews.py b/yt_dlp/extractor/cbsnews.py
index 1285ed65e5..76925b4f9b 100644
--- a/yt_dlp/extractor/cbsnews.py
+++ b/yt_dlp/extractor/cbsnews.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import zlib
 
diff --git a/yt_dlp/extractor/cbssports.py b/yt_dlp/extractor/cbssports.py
index b8a6e59678..56a2551497 100644
--- a/yt_dlp/extractor/cbssports.py
+++ b/yt_dlp/extractor/cbssports.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 # from .cbs import CBSBaseIE
 from .common import InfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/ccc.py b/yt_dlp/extractor/ccc.py
index 36e6dff72c..b11e1f74ed 100644
--- a/yt_dlp/extractor/ccc.py
+++ b/yt_dlp/extractor/ccc.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/ccma.py b/yt_dlp/extractor/ccma.py
index 9dbaabfa08..ca739f8a14 100644
--- a/yt_dlp/extractor/ccma.py
+++ b/yt_dlp/extractor/ccma.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/cctv.py b/yt_dlp/extractor/cctv.py
index 0ed5f327b6..623cbb3420 100644
--- a/yt_dlp/extractor/cctv.py
+++ b/yt_dlp/extractor/cctv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cda.py b/yt_dlp/extractor/cda.py
index 72c47050ff..9b257bee97 100644
--- a/yt_dlp/extractor/cda.py
+++ b/yt_dlp/extractor/cda.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import codecs
 import re
 import json
diff --git a/yt_dlp/extractor/ceskatelevize.py b/yt_dlp/extractor/ceskatelevize.py
index ddf66b2070..331b350f1d 100644
--- a/yt_dlp/extractor/ceskatelevize.py
+++ b/yt_dlp/extractor/ceskatelevize.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cgtn.py b/yt_dlp/extractor/cgtn.py
index 89f173887e..aaafa02d1b 100644
--- a/yt_dlp/extractor/cgtn.py
+++ b/yt_dlp/extractor/cgtn.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     try_get,
diff --git a/yt_dlp/extractor/channel9.py b/yt_dlp/extractor/channel9.py
index 90024dbbad..90a1ab2bee 100644
--- a/yt_dlp/extractor/channel9.py
+++ b/yt_dlp/extractor/channel9.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/charlierose.py b/yt_dlp/extractor/charlierose.py
index 42c9af263e..27f8b33e54 100644
--- a/yt_dlp/extractor/charlierose.py
+++ b/yt_dlp/extractor/charlierose.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import remove_end
 
diff --git a/yt_dlp/extractor/chaturbate.py b/yt_dlp/extractor/chaturbate.py
index 8da51f9196..d39210bf74 100644
--- a/yt_dlp/extractor/chaturbate.py
+++ b/yt_dlp/extractor/chaturbate.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/chilloutzone.py b/yt_dlp/extractor/chilloutzone.py
index fd5202b9e4..1a2f77c4eb 100644
--- a/yt_dlp/extractor/chilloutzone.py
+++ b/yt_dlp/extractor/chilloutzone.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/chingari.py b/yt_dlp/extractor/chingari.py
index e6841fb8b2..40613cfa3a 100644
--- a/yt_dlp/extractor/chingari.py
+++ b/yt_dlp/extractor/chingari.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import json
 
diff --git a/yt_dlp/extractor/chirbit.py b/yt_dlp/extractor/chirbit.py
index 8d75cdf199..452711d973 100644
--- a/yt_dlp/extractor/chirbit.py
+++ b/yt_dlp/extractor/chirbit.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cinchcast.py b/yt_dlp/extractor/cinchcast.py
index b861d54b0a..393df36984 100644
--- a/yt_dlp/extractor/cinchcast.py
+++ b/yt_dlp/extractor/cinchcast.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     unified_strdate,
diff --git a/yt_dlp/extractor/cinemax.py b/yt_dlp/extractor/cinemax.py
index 2c3ff8d4f9..54cab2285e 100644
--- a/yt_dlp/extractor/cinemax.py
+++ b/yt_dlp/extractor/cinemax.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .hbo import HBOBaseIE
 
 
diff --git a/yt_dlp/extractor/ciscolive.py b/yt_dlp/extractor/ciscolive.py
index 349c5eb50d..0668578170 100644
--- a/yt_dlp/extractor/ciscolive.py
+++ b/yt_dlp/extractor/ciscolive.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ciscowebex.py b/yt_dlp/extractor/ciscowebex.py
index 882dae91b5..e1aae9bda6 100644
--- a/yt_dlp/extractor/ciscowebex.py
+++ b/yt_dlp/extractor/ciscowebex.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/cjsw.py b/yt_dlp/extractor/cjsw.py
index 1dea0d7c71..c37a3b8482 100644
--- a/yt_dlp/extractor/cjsw.py
+++ b/yt_dlp/extractor/cjsw.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/cliphunter.py b/yt_dlp/extractor/cliphunter.py
index f2ca7a337d..7e5fd31750 100644
--- a/yt_dlp/extractor/cliphunter.py
+++ b/yt_dlp/extractor/cliphunter.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/clippit.py b/yt_dlp/extractor/clippit.py
index a1a7a774c6..006a713b2a 100644
--- a/yt_dlp/extractor/clippit.py
+++ b/yt_dlp/extractor/clippit.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_iso8601,
diff --git a/yt_dlp/extractor/cliprs.py b/yt_dlp/extractor/cliprs.py
index d55b26d59f..567f77b94e 100644
--- a/yt_dlp/extractor/cliprs.py
+++ b/yt_dlp/extractor/cliprs.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .onet import OnetBaseIE
 
 
diff --git a/yt_dlp/extractor/clipsyndicate.py b/yt_dlp/extractor/clipsyndicate.py
index 6cdb42f5a4..6064443210 100644
--- a/yt_dlp/extractor/clipsyndicate.py
+++ b/yt_dlp/extractor/clipsyndicate.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     find_xpath_attr,
diff --git a/yt_dlp/extractor/closertotruth.py b/yt_dlp/extractor/closertotruth.py
index 517e121e02..e78e26a113 100644
--- a/yt_dlp/extractor/closertotruth.py
+++ b/yt_dlp/extractor/closertotruth.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cloudflarestream.py b/yt_dlp/extractor/cloudflarestream.py
index 2fdcfbb3af..0333d5def5 100644
--- a/yt_dlp/extractor/cloudflarestream.py
+++ b/yt_dlp/extractor/cloudflarestream.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import re
 
diff --git a/yt_dlp/extractor/cloudy.py b/yt_dlp/extractor/cloudy.py
index 85ca20eccd..848643e262 100644
--- a/yt_dlp/extractor/cloudy.py
+++ b/yt_dlp/extractor/cloudy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     str_to_int,
diff --git a/yt_dlp/extractor/clubic.py b/yt_dlp/extractor/clubic.py
index 98f9cb5969..ce86212965 100644
--- a/yt_dlp/extractor/clubic.py
+++ b/yt_dlp/extractor/clubic.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/clyp.py b/yt_dlp/extractor/clyp.py
index e6b2ac4d48..c64726ca27 100644
--- a/yt_dlp/extractor/clyp.py
+++ b/yt_dlp/extractor/clyp.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/cmt.py b/yt_dlp/extractor/cmt.py
index a4ddb91609..4eec066dd7 100644
--- a/yt_dlp/extractor/cmt.py
+++ b/yt_dlp/extractor/cmt.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .mtv import MTVIE
 
 # TODO Remove - Reason: Outdated Site
diff --git a/yt_dlp/extractor/cnbc.py b/yt_dlp/extractor/cnbc.py
index da3730cc82..68fd025b7c 100644
--- a/yt_dlp/extractor/cnbc.py
+++ b/yt_dlp/extractor/cnbc.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import smuggle_url
 
diff --git a/yt_dlp/extractor/cnn.py b/yt_dlp/extractor/cnn.py
index af11d95b43..96482eaf58 100644
--- a/yt_dlp/extractor/cnn.py
+++ b/yt_dlp/extractor/cnn.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from .turner import TurnerBaseIE
 from ..utils import url_basename
diff --git a/yt_dlp/extractor/comedycentral.py b/yt_dlp/extractor/comedycentral.py
index 5a12ab5e69..05fc9f2b50 100644
--- a/yt_dlp/extractor/comedycentral.py
+++ b/yt_dlp/extractor/comedycentral.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .mtv import MTVServicesInfoExtractor
 
 
diff --git a/yt_dlp/extractor/common.py b/yt_dlp/extractor/common.py
index 8da21a3dc5..ef22c78765 100644
--- a/yt_dlp/extractor/common.py
+++ b/yt_dlp/extractor/common.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import collections
 import xml.etree.ElementTree
@@ -92,7 +89,7 @@ from ..utils import (
 )
 
 
-class InfoExtractor(object):
+class InfoExtractor:
     """Information Extractor class.
 
     Information extractors are the classes that, given a URL, extract
@@ -628,7 +625,7 @@ class InfoExtractor(object):
             if country:
                 self._x_forwarded_for_ip = GeoUtils.random_ipv4(country)
                 self._downloader.write_debug(
-                    'Using fake IP %s (%s) as X-Forwarded-For' % (self._x_forwarded_for_ip, country.upper()))
+                    f'Using fake IP {self._x_forwarded_for_ip} ({country.upper()}) as X-Forwarded-For')
 
     def extract(self, url):
         """Extracts URL information and returns it in list of dicts."""
@@ -741,9 +738,9 @@ class InfoExtractor(object):
             self.report_download_webpage(video_id)
         elif note is not False:
             if video_id is None:
-                self.to_screen('%s' % (note,))
+                self.to_screen(str(note))
             else:
-                self.to_screen('%s: %s' % (video_id, note))
+                self.to_screen(f'{video_id}: {note}')
 
         # Some sites check X-Forwarded-For HTTP header in order to figure out
         # the origin of the client behind proxy. This allows bypassing geo
@@ -779,7 +776,7 @@ class InfoExtractor(object):
             if errnote is None:
                 errnote = 'Unable to download webpage'
 
-            errmsg = '%s: %s' % (errnote, error_to_compat_str(err))
+            errmsg = f'{errnote}: {error_to_compat_str(err)}'
             if fatal:
                 raise ExtractorError(errmsg, cause=err)
             else:
@@ -860,7 +857,7 @@ class InfoExtractor(object):
             dump = base64.b64encode(webpage_bytes).decode('ascii')
             self._downloader.to_screen(dump)
         if self.get_param('write_pages', False):
-            basen = '%s_%s' % (video_id, urlh.geturl())
+            basen = f'{video_id}_{urlh.geturl()}'
             trim_length = self.get_param('trim_file_name') or 240
             if len(basen) > trim_length:
                 h = '___' + hashlib.md5(basen.encode('utf-8')).hexdigest()
@@ -1098,10 +1095,10 @@ class InfoExtractor(object):
 
     def to_screen(self, msg, *args, **kwargs):
         """Print msg to screen, prefixing it with '[ie_name]'"""
-        self._downloader.to_screen('[%s] %s' % (self.IE_NAME, msg), *args, **kwargs)
+        self._downloader.to_screen(f'[{self.IE_NAME}] {msg}', *args, **kwargs)
 
     def write_debug(self, msg, *args, **kwargs):
-        self._downloader.write_debug('[%s] %s' % (self.IE_NAME, msg), *args, **kwargs)
+        self._downloader.write_debug(f'[{self.IE_NAME}] {msg}', *args, **kwargs)
 
     def get_param(self, name, default=None, *args, **kwargs):
         if self._downloader:
@@ -1138,7 +1135,7 @@ class InfoExtractor(object):
             method = 'any' if self.supports_login() else 'cookies'
         if method is not None:
             assert method in self._LOGIN_HINTS, 'Invalid login method'
-            msg = '%s. %s' % (msg, self._LOGIN_HINTS[method])
+            msg = f'{msg}. {self._LOGIN_HINTS[method]}'
         raise ExtractorError(msg, expected=True)
 
     def raise_geo_restricted(
@@ -1257,7 +1254,7 @@ class InfoExtractor(object):
                 else:
                     raise netrc.NetrcParseError(
                         'No authenticators for %s' % netrc_machine)
-            except (IOError, netrc.NetrcParseError) as err:
+            except (OSError, netrc.NetrcParseError) as err:
                 self.report_warning(
                     'parsing .netrc: %s' % error_to_compat_str(err))
 
@@ -3333,7 +3330,7 @@ class InfoExtractor(object):
                             http_f = f.copy()
                             del http_f['manifest_url']
                             http_url = re.sub(
-                                REPL_REGEX, protocol + r'://%s/\g<1>%s\3' % (http_host, qualities[i]), f['url'])
+                                REPL_REGEX, protocol + fr'://{http_host}/\g<1>{qualities[i]}\3', f['url'])
                             http_f.update({
                                 'format_id': http_f['format_id'].replace('hls-', protocol + '-'),
                                 'url': http_url,
@@ -3354,7 +3351,7 @@ class InfoExtractor(object):
         formats = []
 
         def manifest_url(manifest):
-            m_url = '%s/%s' % (http_base_url, manifest)
+            m_url = f'{http_base_url}/{manifest}'
             if query:
                 m_url += '?%s' % query
             return m_url
@@ -3391,7 +3388,7 @@ class InfoExtractor(object):
             for protocol in ('rtmp', 'rtsp'):
                 if protocol not in skip_protocols:
                     formats.append({
-                        'url': '%s:%s' % (protocol, url_base),
+                        'url': f'{protocol}:{url_base}',
                         'format_id': protocol,
                         'protocol': protocol,
                     })
@@ -3557,7 +3554,7 @@ class InfoExtractor(object):
     def _int(self, v, name, fatal=False, **kwargs):
         res = int_or_none(v, **kwargs)
         if res is None:
-            msg = 'Failed to extract %s: Could not parse value %r' % (name, v)
+            msg = f'Failed to extract {name}: Could not parse value {v!r}'
             if fatal:
                 raise ExtractorError(msg)
             else:
@@ -3567,7 +3564,7 @@ class InfoExtractor(object):
     def _float(self, v, name, fatal=False, **kwargs):
         res = float_or_none(v, **kwargs)
         if res is None:
-            msg = 'Failed to extract %s: Could not parse value %r' % (name, v)
+            msg = f'Failed to extract {name}: Could not parse value {v!r}'
             if fatal:
                 raise ExtractorError(msg)
             else:
@@ -3685,7 +3682,7 @@ class InfoExtractor(object):
     def _merge_subtitle_items(subtitle_list1, subtitle_list2):
         """ Merge subtitle items for one language. Items with duplicated URLs/data
         will be dropped. """
-        list1_data = set((item.get('url'), item.get('data')) for item in subtitle_list1)
+        list1_data = {(item.get('url'), item.get('data')) for item in subtitle_list1}
         ret = list(subtitle_list1)
         ret.extend(item for item in subtitle_list2 if (item.get('url'), item.get('data')) not in list1_data)
         return ret
@@ -3798,7 +3795,7 @@ class SearchInfoExtractor(InfoExtractor):
         else:
             n = int(prefix)
             if n <= 0:
-                raise ExtractorError('invalid download number %s for query "%s"' % (n, query))
+                raise ExtractorError(f'invalid download number {n} for query "{query}"')
             elif n > self._MAX_RESULTS:
                 self.report_warning('%s returns max %i results (you requested %i)' % (self._SEARCH_KEY, self._MAX_RESULTS, n))
                 n = self._MAX_RESULTS
diff --git a/yt_dlp/extractor/commonmistakes.py b/yt_dlp/extractor/commonmistakes.py
index e0a9f5956e..62bd51fd7c 100644
--- a/yt_dlp/extractor/commonmistakes.py
+++ b/yt_dlp/extractor/commonmistakes.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError
 
diff --git a/yt_dlp/extractor/commonprotocols.py b/yt_dlp/extractor/commonprotocols.py
index 3708c6ad27..40475f7ecc 100644
--- a/yt_dlp/extractor/commonprotocols.py
+++ b/yt_dlp/extractor/commonprotocols.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urlparse,
diff --git a/yt_dlp/extractor/condenast.py b/yt_dlp/extractor/condenast.py
index 54e7af8b09..cf6e40cb83 100644
--- a/yt_dlp/extractor/condenast.py
+++ b/yt_dlp/extractor/condenast.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/contv.py b/yt_dlp/extractor/contv.py
index 84b462d40a..50648a5368 100644
--- a/yt_dlp/extractor/contv.py
+++ b/yt_dlp/extractor/contv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/corus.py b/yt_dlp/extractor/corus.py
index 119461375e..7b83c0390d 100644
--- a/yt_dlp/extractor/corus.py
+++ b/yt_dlp/extractor/corus.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .theplatform import ThePlatformFeedIE
 from ..utils import (
     dict_get,
diff --git a/yt_dlp/extractor/coub.py b/yt_dlp/extractor/coub.py
index e90aa1954f..b462acaf01 100644
--- a/yt_dlp/extractor/coub.py
+++ b/yt_dlp/extractor/coub.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/cozytv.py b/yt_dlp/extractor/cozytv.py
index d49f1ca744..5ef5afcc21 100644
--- a/yt_dlp/extractor/cozytv.py
+++ b/yt_dlp/extractor/cozytv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import unified_strdate
 
diff --git a/yt_dlp/extractor/cpac.py b/yt_dlp/extractor/cpac.py
index 22741152c6..e8975e5e2b 100644
--- a/yt_dlp/extractor/cpac.py
+++ b/yt_dlp/extractor/cpac.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/cracked.py b/yt_dlp/extractor/cracked.py
index f77a68eced..c6aabccc68 100644
--- a/yt_dlp/extractor/cracked.py
+++ b/yt_dlp/extractor/cracked.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/crackle.py b/yt_dlp/extractor/crackle.py
index db4962c422..319374f3b8 100644
--- a/yt_dlp/extractor/crackle.py
+++ b/yt_dlp/extractor/crackle.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals, division
-
 import hashlib
 import hmac
 import re
diff --git a/yt_dlp/extractor/craftsy.py b/yt_dlp/extractor/craftsy.py
index ed2f4420ef..307bfb9460 100644
--- a/yt_dlp/extractor/craftsy.py
+++ b/yt_dlp/extractor/craftsy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .brightcove import BrightcoveNewIE
 from .common import InfoExtractor
 
diff --git a/yt_dlp/extractor/crooksandliars.py b/yt_dlp/extractor/crooksandliars.py
index 7fb782db7c..c831a3ae08 100644
--- a/yt_dlp/extractor/crooksandliars.py
+++ b/yt_dlp/extractor/crooksandliars.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/crowdbunker.py b/yt_dlp/extractor/crowdbunker.py
index 72906afefa..75d90b5c55 100644
--- a/yt_dlp/extractor/crowdbunker.py
+++ b/yt_dlp/extractor/crowdbunker.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/crunchyroll.py b/yt_dlp/extractor/crunchyroll.py
index d7696bbd9c..bb1dbbaad7 100644
--- a/yt_dlp/extractor/crunchyroll.py
+++ b/yt_dlp/extractor/crunchyroll.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import re
 import json
diff --git a/yt_dlp/extractor/cspan.py b/yt_dlp/extractor/cspan.py
index f51159bbe6..cb15236179 100644
--- a/yt_dlp/extractor/cspan.py
+++ b/yt_dlp/extractor/cspan.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ctsnews.py b/yt_dlp/extractor/ctsnews.py
index 679f1d92e9..cec178f034 100644
--- a/yt_dlp/extractor/ctsnews.py
+++ b/yt_dlp/extractor/ctsnews.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import unified_timestamp
 from .youtube import YoutubeIE
diff --git a/yt_dlp/extractor/ctv.py b/yt_dlp/extractor/ctv.py
index 756bcc2bea..f125c1ce99 100644
--- a/yt_dlp/extractor/ctv.py
+++ b/yt_dlp/extractor/ctv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/ctvnews.py b/yt_dlp/extractor/ctvnews.py
index 952f4c747f..ad3f0d8e4d 100644
--- a/yt_dlp/extractor/ctvnews.py
+++ b/yt_dlp/extractor/ctvnews.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cultureunplugged.py b/yt_dlp/extractor/cultureunplugged.py
index 9002e4cef5..2fb22800f3 100644
--- a/yt_dlp/extractor/cultureunplugged.py
+++ b/yt_dlp/extractor/cultureunplugged.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import time
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/curiositystream.py b/yt_dlp/extractor/curiositystream.py
index b8abcf7a5a..5b76b29ff4 100644
--- a/yt_dlp/extractor/curiositystream.py
+++ b/yt_dlp/extractor/curiositystream.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/cwtv.py b/yt_dlp/extractor/cwtv.py
index 73382431b7..07239f39cf 100644
--- a/yt_dlp/extractor/cwtv.py
+++ b/yt_dlp/extractor/cwtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/cybrary.py b/yt_dlp/extractor/cybrary.py
index c278f0fe0a..7da581828e 100644
--- a/yt_dlp/extractor/cybrary.py
+++ b/yt_dlp/extractor/cybrary.py
@@ -1,5 +1,4 @@
-# coding: utf-8
-from .common import InfoExtractor
+from .common import InfoExtractor
 
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/daftsex.py b/yt_dlp/extractor/daftsex.py
index 6037fd9cad..0fe014f769 100644
--- a/yt_dlp/extractor/daftsex.py
+++ b/yt_dlp/extractor/daftsex.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_b64decode
 from ..utils import (
diff --git a/yt_dlp/extractor/dailymail.py b/yt_dlp/extractor/dailymail.py
index 67b88fd562..5451dbf000 100644
--- a/yt_dlp/extractor/dailymail.py
+++ b/yt_dlp/extractor/dailymail.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dailymotion.py b/yt_dlp/extractor/dailymotion.py
index 9cb56185bc..3b090d5e02 100644
--- a/yt_dlp/extractor/dailymotion.py
+++ b/yt_dlp/extractor/dailymotion.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import json
 import re
diff --git a/yt_dlp/extractor/damtomo.py b/yt_dlp/extractor/damtomo.py
index 456cd35a44..962d9741bf 100644
--- a/yt_dlp/extractor/damtomo.py
+++ b/yt_dlp/extractor/damtomo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/daum.py b/yt_dlp/extractor/daum.py
index 4362e92cbf..a1f197b0bc 100644
--- a/yt_dlp/extractor/daum.py
+++ b/yt_dlp/extractor/daum.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dbtv.py b/yt_dlp/extractor/dbtv.py
index 8e73176a67..2beccd8b51 100644
--- a/yt_dlp/extractor/dbtv.py
+++ b/yt_dlp/extractor/dbtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dctp.py b/yt_dlp/extractor/dctp.py
index e700f8d865..24bb6aca25 100644
--- a/yt_dlp/extractor/dctp.py
+++ b/yt_dlp/extractor/dctp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/deezer.py b/yt_dlp/extractor/deezer.py
index 7ba02e552e..bee1c7501c 100644
--- a/yt_dlp/extractor/deezer.py
+++ b/yt_dlp/extractor/deezer.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/defense.py b/yt_dlp/extractor/defense.py
index 9fe144e143..7d73ea862e 100644
--- a/yt_dlp/extractor/defense.py
+++ b/yt_dlp/extractor/defense.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/democracynow.py b/yt_dlp/extractor/democracynow.py
index 5c9c0ecdc0..af327e6c6b 100644
--- a/yt_dlp/extractor/democracynow.py
+++ b/yt_dlp/extractor/democracynow.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import os.path
 
diff --git a/yt_dlp/extractor/dfb.py b/yt_dlp/extractor/dfb.py
index 97f70fc7b0..5aca729889 100644
--- a/yt_dlp/extractor/dfb.py
+++ b/yt_dlp/extractor/dfb.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import unified_strdate
 
diff --git a/yt_dlp/extractor/dhm.py b/yt_dlp/extractor/dhm.py
index aee72a6ed1..3d42fc2b0c 100644
--- a/yt_dlp/extractor/dhm.py
+++ b/yt_dlp/extractor/dhm.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import parse_duration
 
diff --git a/yt_dlp/extractor/digg.py b/yt_dlp/extractor/digg.py
index 913c1750f1..86e8a6facb 100644
--- a/yt_dlp/extractor/digg.py
+++ b/yt_dlp/extractor/digg.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import js_to_json
 
diff --git a/yt_dlp/extractor/digitalconcerthall.py b/yt_dlp/extractor/digitalconcerthall.py
index 8398ae30e6..c891ad0a63 100644
--- a/yt_dlp/extractor/digitalconcerthall.py
+++ b/yt_dlp/extractor/digitalconcerthall.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/digiteka.py b/yt_dlp/extractor/digiteka.py
index d63204778c..5d244cb08a 100644
--- a/yt_dlp/extractor/digiteka.py
+++ b/yt_dlp/extractor/digiteka.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/discovery.py b/yt_dlp/extractor/discovery.py
index fd3ad75c78..fd3fc8fb0f 100644
--- a/yt_dlp/extractor/discovery.py
+++ b/yt_dlp/extractor/discovery.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import random
 import string
 
diff --git a/yt_dlp/extractor/discoverygo.py b/yt_dlp/extractor/discoverygo.py
index 9e7b14a7d5..7b4278c882 100644
--- a/yt_dlp/extractor/discoverygo.py
+++ b/yt_dlp/extractor/discoverygo.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/discoveryvr.py b/yt_dlp/extractor/discoveryvr.py
index cb63c26495..a021d986e6 100644
--- a/yt_dlp/extractor/discoveryvr.py
+++ b/yt_dlp/extractor/discoveryvr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import parse_duration
 
diff --git a/yt_dlp/extractor/disney.py b/yt_dlp/extractor/disney.py
index 0ad7b1f462..f9af59a571 100644
--- a/yt_dlp/extractor/disney.py
+++ b/yt_dlp/extractor/disney.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dispeak.py b/yt_dlp/extractor/dispeak.py
index 3d651f3abc..d4f3324e7c 100644
--- a/yt_dlp/extractor/dispeak.py
+++ b/yt_dlp/extractor/dispeak.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dlive.py b/yt_dlp/extractor/dlive.py
index 7410eb6c87..31b4a568f2 100644
--- a/yt_dlp/extractor/dlive.py
+++ b/yt_dlp/extractor/dlive.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/doodstream.py b/yt_dlp/extractor/doodstream.py
index f692127c2f..f1001c778c 100644
--- a/yt_dlp/extractor/doodstream.py
+++ b/yt_dlp/extractor/doodstream.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import string
 import random
 import time
diff --git a/yt_dlp/extractor/dotsub.py b/yt_dlp/extractor/dotsub.py
index 148605c0bd..079f837500 100644
--- a/yt_dlp/extractor/dotsub.py
+++ b/yt_dlp/extractor/dotsub.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/douyutv.py b/yt_dlp/extractor/douyutv.py
index 26a8d645cd..477f4687cd 100644
--- a/yt_dlp/extractor/douyutv.py
+++ b/yt_dlp/extractor/douyutv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import time
 import hashlib
 import re
diff --git a/yt_dlp/extractor/dplay.py b/yt_dlp/extractor/dplay.py
index a25f27c3a2..54f95a44af 100644
--- a/yt_dlp/extractor/dplay.py
+++ b/yt_dlp/extractor/dplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import uuid
 
diff --git a/yt_dlp/extractor/drbonanza.py b/yt_dlp/extractor/drbonanza.py
index ea0f06d3da..dca8c89d04 100644
--- a/yt_dlp/extractor/drbonanza.py
+++ b/yt_dlp/extractor/drbonanza.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     js_to_json,
diff --git a/yt_dlp/extractor/dreisat.py b/yt_dlp/extractor/dreisat.py
index 5a07c18f49..80a724607c 100644
--- a/yt_dlp/extractor/dreisat.py
+++ b/yt_dlp/extractor/dreisat.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .zdf import ZDFIE
 
 
diff --git a/yt_dlp/extractor/drooble.py b/yt_dlp/extractor/drooble.py
index 058425095f..106e5c457a 100644
--- a/yt_dlp/extractor/drooble.py
+++ b/yt_dlp/extractor/drooble.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dropbox.py b/yt_dlp/extractor/dropbox.py
index 2559657ada..6ac0c713a6 100644
--- a/yt_dlp/extractor/dropbox.py
+++ b/yt_dlp/extractor/dropbox.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import os.path
 import re
 
diff --git a/yt_dlp/extractor/dropout.py b/yt_dlp/extractor/dropout.py
index 2fa61950c2..475825eb81 100644
--- a/yt_dlp/extractor/dropout.py
+++ b/yt_dlp/extractor/dropout.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from .vimeo import VHXEmbedIE
 from ..utils import (
diff --git a/yt_dlp/extractor/drtuber.py b/yt_dlp/extractor/drtuber.py
index 540b86a169..3149e319f0 100644
--- a/yt_dlp/extractor/drtuber.py
+++ b/yt_dlp/extractor/drtuber.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/drtv.py b/yt_dlp/extractor/drtv.py
index 37e4d5b262..843e930720 100644
--- a/yt_dlp/extractor/drtv.py
+++ b/yt_dlp/extractor/drtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import binascii
 import hashlib
 import re
diff --git a/yt_dlp/extractor/dtube.py b/yt_dlp/extractor/dtube.py
index ad247b7ddd..25a98f625b 100644
--- a/yt_dlp/extractor/dtube.py
+++ b/yt_dlp/extractor/dtube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 from socket import timeout
 
diff --git a/yt_dlp/extractor/duboku.py b/yt_dlp/extractor/duboku.py
index a87597873e..24403842d3 100644
--- a/yt_dlp/extractor/duboku.py
+++ b/yt_dlp/extractor/duboku.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dumpert.py b/yt_dlp/extractor/dumpert.py
index d9d9afdecb..dc61115ff7 100644
--- a/yt_dlp/extractor/dumpert.py
+++ b/yt_dlp/extractor/dumpert.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/dvtv.py b/yt_dlp/extractor/dvtv.py
index 08663cffb8..61d469f11c 100644
--- a/yt_dlp/extractor/dvtv.py
+++ b/yt_dlp/extractor/dvtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/dw.py b/yt_dlp/extractor/dw.py
index 6eaee07b47..ee2365ddd0 100644
--- a/yt_dlp/extractor/dw.py
+++ b/yt_dlp/extractor/dw.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/eagleplatform.py b/yt_dlp/extractor/eagleplatform.py
index f86731a0c1..e2ecd4b7cf 100644
--- a/yt_dlp/extractor/eagleplatform.py
+++ b/yt_dlp/extractor/eagleplatform.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ebaumsworld.py b/yt_dlp/extractor/ebaumsworld.py
index c97682cd36..0854d03443 100644
--- a/yt_dlp/extractor/ebaumsworld.py
+++ b/yt_dlp/extractor/ebaumsworld.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/echomsk.py b/yt_dlp/extractor/echomsk.py
index 6b7cc652fe..850eabbff0 100644
--- a/yt_dlp/extractor/echomsk.py
+++ b/yt_dlp/extractor/echomsk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/egghead.py b/yt_dlp/extractor/egghead.py
index b6b86768c2..d5c954961f 100644
--- a/yt_dlp/extractor/egghead.py
+++ b/yt_dlp/extractor/egghead.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/ehow.py b/yt_dlp/extractor/ehow.py
index b1cd4f5d4e..74469ce36f 100644
--- a/yt_dlp/extractor/ehow.py
+++ b/yt_dlp/extractor/ehow.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urllib_parse_unquote
 
diff --git a/yt_dlp/extractor/eighttracks.py b/yt_dlp/extractor/eighttracks.py
index 9a44f89f3f..3dd9ab1b31 100644
--- a/yt_dlp/extractor/eighttracks.py
+++ b/yt_dlp/extractor/eighttracks.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import random
 
diff --git a/yt_dlp/extractor/einthusan.py b/yt_dlp/extractor/einthusan.py
index 7af279a536..37be68c613 100644
--- a/yt_dlp/extractor/einthusan.py
+++ b/yt_dlp/extractor/einthusan.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/eitb.py b/yt_dlp/extractor/eitb.py
index ee5ead18b0..01a47f6fde 100644
--- a/yt_dlp/extractor/eitb.py
+++ b/yt_dlp/extractor/eitb.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/ellentube.py b/yt_dlp/extractor/ellentube.py
index d451bc0483..bcd458cdf4 100644
--- a/yt_dlp/extractor/ellentube.py
+++ b/yt_dlp/extractor/ellentube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/elonet.py b/yt_dlp/extractor/elonet.py
index 9c6aea28e8..f99e12250e 100644
--- a/yt_dlp/extractor/elonet.py
+++ b/yt_dlp/extractor/elonet.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import determine_ext
 
diff --git a/yt_dlp/extractor/elpais.py b/yt_dlp/extractor/elpais.py
index b89f6db62f..7c6c880757 100644
--- a/yt_dlp/extractor/elpais.py
+++ b/yt_dlp/extractor/elpais.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import strip_jsonp, unified_strdate
 
diff --git a/yt_dlp/extractor/embedly.py b/yt_dlp/extractor/embedly.py
index a5820b21e0..a8d1f3c55c 100644
--- a/yt_dlp/extractor/embedly.py
+++ b/yt_dlp/extractor/embedly.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urllib_parse_unquote
 
diff --git a/yt_dlp/extractor/engadget.py b/yt_dlp/extractor/engadget.py
index 733bf322fd..e7c5d7bf16 100644
--- a/yt_dlp/extractor/engadget.py
+++ b/yt_dlp/extractor/engadget.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/epicon.py b/yt_dlp/extractor/epicon.py
index cd19325bc7..89424785ec 100644
--- a/yt_dlp/extractor/epicon.py
+++ b/yt_dlp/extractor/epicon.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/eporner.py b/yt_dlp/extractor/eporner.py
index 25a0d97990..6bc70c5c61 100644
--- a/yt_dlp/extractor/eporner.py
+++ b/yt_dlp/extractor/eporner.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     encode_base_n,
diff --git a/yt_dlp/extractor/eroprofile.py b/yt_dlp/extractor/eroprofile.py
index 5d5e7f2442..2b61f3be7d 100644
--- a/yt_dlp/extractor/eroprofile.py
+++ b/yt_dlp/extractor/eroprofile.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ertgr.py b/yt_dlp/extractor/ertgr.py
index 19ce23f017..507f0a5c11 100644
--- a/yt_dlp/extractor/ertgr.py
+++ b/yt_dlp/extractor/ertgr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/escapist.py b/yt_dlp/extractor/escapist.py
index 4cd815ebc4..5d9c46f72d 100644
--- a/yt_dlp/extractor/escapist.py
+++ b/yt_dlp/extractor/escapist.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/espn.py b/yt_dlp/extractor/espn.py
index dc50f3b8b5..8fad70e6b3 100644
--- a/yt_dlp/extractor/espn.py
+++ b/yt_dlp/extractor/espn.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/esri.py b/yt_dlp/extractor/esri.py
index e9dcaeb1dd..1736788db2 100644
--- a/yt_dlp/extractor/esri.py
+++ b/yt_dlp/extractor/esri.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/europa.py b/yt_dlp/extractor/europa.py
index 60ab2ce133..ea20b4d4d4 100644
--- a/yt_dlp/extractor/europa.py
+++ b/yt_dlp/extractor/europa.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/europeantour.py b/yt_dlp/extractor/europeantour.py
index e28f067be0..1995a745d0 100644
--- a/yt_dlp/extractor/europeantour.py
+++ b/yt_dlp/extractor/europeantour.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/euscreen.py b/yt_dlp/extractor/euscreen.py
index 2759e7436f..4435f08e0d 100644
--- a/yt_dlp/extractor/euscreen.py
+++ b/yt_dlp/extractor/euscreen.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/everyonesmixtape.py b/yt_dlp/extractor/everyonesmixtape.py
index 80cb032be8..d26ff8ad3c 100644
--- a/yt_dlp/extractor/everyonesmixtape.py
+++ b/yt_dlp/extractor/everyonesmixtape.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/expotv.py b/yt_dlp/extractor/expotv.py
index 95a8977821..92eaf4248a 100644
--- a/yt_dlp/extractor/expotv.py
+++ b/yt_dlp/extractor/expotv.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/expressen.py b/yt_dlp/extractor/expressen.py
index dc8b855d23..a1b8e9bc9f 100644
--- a/yt_dlp/extractor/expressen.py
+++ b/yt_dlp/extractor/expressen.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/extractors.py b/yt_dlp/extractor/extractors.py
index 0cb6863048..cd3934a70d 100644
--- a/yt_dlp/extractor/extractors.py
+++ b/yt_dlp/extractor/extractors.py
@@ -1,6 +1,4 @@
 # flake8: noqa
-from __future__ import unicode_literals
-
 from .abc import (
     ABCIE,
     ABCIViewIE,
diff --git a/yt_dlp/extractor/extremetube.py b/yt_dlp/extractor/extremetube.py
index acd4090fa3..99520b6a0c 100644
--- a/yt_dlp/extractor/extremetube.py
+++ b/yt_dlp/extractor/extremetube.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from ..utils import str_to_int
 from .keezmovies import KeezMoviesIE
 
diff --git a/yt_dlp/extractor/eyedotv.py b/yt_dlp/extractor/eyedotv.py
index f62ddebaee..d8b068e9c5 100644
--- a/yt_dlp/extractor/eyedotv.py
+++ b/yt_dlp/extractor/eyedotv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     xpath_text,
diff --git a/yt_dlp/extractor/facebook.py b/yt_dlp/extractor/facebook.py
index 5e0e2facf3..2e69dce0f2 100644
--- a/yt_dlp/extractor/facebook.py
+++ b/yt_dlp/extractor/facebook.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/fancode.py b/yt_dlp/extractor/fancode.py
index 7ea16c61d2..9716e581a9 100644
--- a/yt_dlp/extractor/fancode.py
+++ b/yt_dlp/extractor/fancode.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..compat import compat_str
diff --git a/yt_dlp/extractor/faz.py b/yt_dlp/extractor/faz.py
index 312ee2aeed..cc12fda2b9 100644
--- a/yt_dlp/extractor/faz.py
+++ b/yt_dlp/extractor/faz.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/fc2.py b/yt_dlp/extractor/fc2.py
index 54a83aa16a..a4c9793bbf 100644
--- a/yt_dlp/extractor/fc2.py
+++ b/yt_dlp/extractor/fc2.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/fczenit.py b/yt_dlp/extractor/fczenit.py
index 8db7c59638..df40888e1b 100644
--- a/yt_dlp/extractor/fczenit.py
+++ b/yt_dlp/extractor/fczenit.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/filmmodu.py b/yt_dlp/extractor/filmmodu.py
index 2746876d53..d741311925 100644
--- a/yt_dlp/extractor/filmmodu.py
+++ b/yt_dlp/extractor/filmmodu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/filmon.py b/yt_dlp/extractor/filmon.py
index 7b43ecc0f9..7040231bee 100644
--- a/yt_dlp/extractor/filmon.py
+++ b/yt_dlp/extractor/filmon.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/filmweb.py b/yt_dlp/extractor/filmweb.py
index 5e323b4f8f..cfea1f2fb6 100644
--- a/yt_dlp/extractor/filmweb.py
+++ b/yt_dlp/extractor/filmweb.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/firsttv.py b/yt_dlp/extractor/firsttv.py
index ccad173b79..99c27e0c32 100644
--- a/yt_dlp/extractor/firsttv.py
+++ b/yt_dlp/extractor/firsttv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/fivetv.py b/yt_dlp/extractor/fivetv.py
index d6bebd19bd..448c332b3d 100644
--- a/yt_dlp/extractor/fivetv.py
+++ b/yt_dlp/extractor/fivetv.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/flickr.py b/yt_dlp/extractor/flickr.py
index 2ed6c2bdc6..552ecd43a0 100644
--- a/yt_dlp/extractor/flickr.py
+++ b/yt_dlp/extractor/flickr.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/folketinget.py b/yt_dlp/extractor/folketinget.py
index b3df93f28f..0e69fa32f3 100644
--- a/yt_dlp/extractor/folketinget.py
+++ b/yt_dlp/extractor/folketinget.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_parse_qs
 from ..utils import (
diff --git a/yt_dlp/extractor/footyroom.py b/yt_dlp/extractor/footyroom.py
index 118325b6d5..4a1316b50c 100644
--- a/yt_dlp/extractor/footyroom.py
+++ b/yt_dlp/extractor/footyroom.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .streamable import StreamableIE
 
diff --git a/yt_dlp/extractor/formula1.py b/yt_dlp/extractor/formula1.py
index 67662e6de1..0a8ef850ef 100644
--- a/yt_dlp/extractor/formula1.py
+++ b/yt_dlp/extractor/formula1.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/fourtube.py b/yt_dlp/extractor/fourtube.py
index d4d955b6b5..c6af100f37 100644
--- a/yt_dlp/extractor/fourtube.py
+++ b/yt_dlp/extractor/fourtube.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/fox.py b/yt_dlp/extractor/fox.py
index 4c52b9ac61..5996e86bb7 100644
--- a/yt_dlp/extractor/fox.py
+++ b/yt_dlp/extractor/fox.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import uuid
 
diff --git a/yt_dlp/extractor/fox9.py b/yt_dlp/extractor/fox9.py
index 91f8f7b8a1..dfbafa7ddf 100644
--- a/yt_dlp/extractor/fox9.py
+++ b/yt_dlp/extractor/fox9.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/foxgay.py b/yt_dlp/extractor/foxgay.py
index 1c53e0642b..4abc2cfd02 100644
--- a/yt_dlp/extractor/foxgay.py
+++ b/yt_dlp/extractor/foxgay.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/foxnews.py b/yt_dlp/extractor/foxnews.py
index 18fa0a5efb..cee4d6b496 100644
--- a/yt_dlp/extractor/foxnews.py
+++ b/yt_dlp/extractor/foxnews.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .amp import AMPIE
diff --git a/yt_dlp/extractor/foxsports.py b/yt_dlp/extractor/foxsports.py
index 2b2cb6c6f6..f9d7fe52ae 100644
--- a/yt_dlp/extractor/foxsports.py
+++ b/yt_dlp/extractor/foxsports.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/fptplay.py b/yt_dlp/extractor/fptplay.py
index c23fe6c533..1872d8a1ca 100644
--- a/yt_dlp/extractor/fptplay.py
+++ b/yt_dlp/extractor/fptplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import time
 import urllib.parse
diff --git a/yt_dlp/extractor/franceculture.py b/yt_dlp/extractor/franceculture.py
index 9dc28d801c..6bd9912f33 100644
--- a/yt_dlp/extractor/franceculture.py
+++ b/yt_dlp/extractor/franceculture.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 from .common import InfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/franceinter.py b/yt_dlp/extractor/franceinter.py
index ae822a50e3..779249b843 100644
--- a/yt_dlp/extractor/franceinter.py
+++ b/yt_dlp/extractor/franceinter.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import month_by_name
 
diff --git a/yt_dlp/extractor/francetv.py b/yt_dlp/extractor/francetv.py
index 347a766d8f..5902eaca07 100644
--- a/yt_dlp/extractor/francetv.py
+++ b/yt_dlp/extractor/francetv.py
@@ -1,8 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/freesound.py b/yt_dlp/extractor/freesound.py
index 138b6bc58c..9724dbdf0f 100644
--- a/yt_dlp/extractor/freesound.py
+++ b/yt_dlp/extractor/freesound.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/freespeech.py b/yt_dlp/extractor/freespeech.py
index ea9c3e317c..aea551379b 100644
--- a/yt_dlp/extractor/freespeech.py
+++ b/yt_dlp/extractor/freespeech.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .youtube import YoutubeIE
 
diff --git a/yt_dlp/extractor/frontendmasters.py b/yt_dlp/extractor/frontendmasters.py
index fc67a8437f..e0529b7ba7 100644
--- a/yt_dlp/extractor/frontendmasters.py
+++ b/yt_dlp/extractor/frontendmasters.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/fujitv.py b/yt_dlp/extractor/fujitv.py
index 4fdfe12abb..15d75a972b 100644
--- a/yt_dlp/extractor/fujitv.py
+++ b/yt_dlp/extractor/fujitv.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 from ..utils import HEADRequest
 from .common import InfoExtractor
 
diff --git a/yt_dlp/extractor/funimation.py b/yt_dlp/extractor/funimation.py
index 6aa9bc9ce0..1e3309605a 100644
--- a/yt_dlp/extractor/funimation.py
+++ b/yt_dlp/extractor/funimation.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 import re
 import string
diff --git a/yt_dlp/extractor/funk.py b/yt_dlp/extractor/funk.py
index 2c5cfe8648..539d719c5b 100644
--- a/yt_dlp/extractor/funk.py
+++ b/yt_dlp/extractor/funk.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from .nexx import NexxIE
 from ..utils import (
diff --git a/yt_dlp/extractor/fusion.py b/yt_dlp/extractor/fusion.py
index a3f44b812f..46bda49ea8 100644
--- a/yt_dlp/extractor/fusion.py
+++ b/yt_dlp/extractor/fusion.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/fxnetworks.py b/yt_dlp/extractor/fxnetworks.py
index 00e67426b9..370b0a597b 100644
--- a/yt_dlp/extractor/fxnetworks.py
+++ b/yt_dlp/extractor/fxnetworks.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .adobepass import AdobePassIE
 from ..utils import (
     extract_attributes,
diff --git a/yt_dlp/extractor/gab.py b/yt_dlp/extractor/gab.py
index 9ba0b1ca19..7ed81f7613 100644
--- a/yt_dlp/extractor/gab.py
+++ b/yt_dlp/extractor/gab.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/gaia.py b/yt_dlp/extractor/gaia.py
index 5b0195c63c..4ace0544a9 100644
--- a/yt_dlp/extractor/gaia.py
+++ b/yt_dlp/extractor/gaia.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/gameinformer.py b/yt_dlp/extractor/gameinformer.py
index f1b96c172e..2664edb816 100644
--- a/yt_dlp/extractor/gameinformer.py
+++ b/yt_dlp/extractor/gameinformer.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .brightcove import BrightcoveNewIE
 from .common import InfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/gamejolt.py b/yt_dlp/extractor/gamejolt.py
index a13e528f52..440b832fcb 100644
--- a/yt_dlp/extractor/gamejolt.py
+++ b/yt_dlp/extractor/gamejolt.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import itertools
 import json
 import math
diff --git a/yt_dlp/extractor/gamespot.py b/yt_dlp/extractor/gamespot.py
index 7a1beae3cf..e1d3173771 100644
--- a/yt_dlp/extractor/gamespot.py
+++ b/yt_dlp/extractor/gamespot.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .once import OnceIE
 from ..compat import compat_urllib_parse_unquote
 
diff --git a/yt_dlp/extractor/gamestar.py b/yt_dlp/extractor/gamestar.py
index e882fa6719..e9966f5327 100644
--- a/yt_dlp/extractor/gamestar.py
+++ b/yt_dlp/extractor/gamestar.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/gaskrank.py b/yt_dlp/extractor/gaskrank.py
index 03acd2a731..76ddcc40e6 100644
--- a/yt_dlp/extractor/gaskrank.py
+++ b/yt_dlp/extractor/gaskrank.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 from .common import InfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/gazeta.py b/yt_dlp/extractor/gazeta.py
index 367187080e..c6868a6722 100644
--- a/yt_dlp/extractor/gazeta.py
+++ b/yt_dlp/extractor/gazeta.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/gdcvault.py b/yt_dlp/extractor/gdcvault.py
index c3ad6b4cea..2878bbd88c 100644
--- a/yt_dlp/extractor/gdcvault.py
+++ b/yt_dlp/extractor/gdcvault.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/gedidigital.py b/yt_dlp/extractor/gedidigital.py
index ec386c2187..c878daff82 100644
--- a/yt_dlp/extractor/gedidigital.py
+++ b/yt_dlp/extractor/gedidigital.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/generic.py b/yt_dlp/extractor/generic.py
index fd620217ed..f44f19a549 100644
--- a/yt_dlp/extractor/generic.py
+++ b/yt_dlp/extractor/generic.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import os
 import re
 import xml.etree.ElementTree
@@ -2628,7 +2624,7 @@ class GenericIE(InfoExtractor):
 
             entries.append({
                 'id': os.path.splitext(url_n.text.rpartition('/')[2])[0],
-                'title': '%s - %s' % (title, n.tag),
+                'title': f'{title} - {n.tag}',
                 'url': compat_urlparse.urljoin(url, url_n.text),
                 'duration': float_or_none(n.find('./duration').text),
             })
@@ -2650,7 +2646,7 @@ class GenericIE(InfoExtractor):
 
         for o in range(len(newmagic) - 1, -1, -1):
             new = ''
-            l = (o + sum([int(n) for n in license[o:]])) % 32
+            l = (o + sum(int(n) for n in license[o:])) % 32
 
             for i in range(0, len(newmagic)):
                 if i == o:
@@ -3772,7 +3768,7 @@ class GenericIE(InfoExtractor):
             else:
                 for num, entry in enumerate(entries, start=1):
                     entry.update({
-                        'id': '%s-%s' % (video_id, num),
+                        'id': f'{video_id}-{num}',
                         'title': '%s (%d)' % (video_title, num),
                     })
             for entry in entries:
diff --git a/yt_dlp/extractor/gettr.py b/yt_dlp/extractor/gettr.py
index 327a4d0b88..9bd6200b67 100644
--- a/yt_dlp/extractor/gettr.py
+++ b/yt_dlp/extractor/gettr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     bool_or_none,
diff --git a/yt_dlp/extractor/gfycat.py b/yt_dlp/extractor/gfycat.py
index 2ad03e2b25..7373c574ff 100644
--- a/yt_dlp/extractor/gfycat.py
+++ b/yt_dlp/extractor/gfycat.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/giantbomb.py b/yt_dlp/extractor/giantbomb.py
index 1920923fc1..5d6b208aad 100644
--- a/yt_dlp/extractor/giantbomb.py
+++ b/yt_dlp/extractor/giantbomb.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/giga.py b/yt_dlp/extractor/giga.py
index 5a9992a278..9e835a6da6 100644
--- a/yt_dlp/extractor/giga.py
+++ b/yt_dlp/extractor/giga.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/gigya.py b/yt_dlp/extractor/gigya.py
index 412178492f..c5bc86bb4a 100644
--- a/yt_dlp/extractor/gigya.py
+++ b/yt_dlp/extractor/gigya.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/glide.py b/yt_dlp/extractor/glide.py
index 12af859be3..2bffb26dc2 100644
--- a/yt_dlp/extractor/glide.py
+++ b/yt_dlp/extractor/glide.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/globo.py b/yt_dlp/extractor/globo.py
index f6aaae1e9e..8915ebf484 100644
--- a/yt_dlp/extractor/globo.py
+++ b/yt_dlp/extractor/globo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import hashlib
 import json
diff --git a/yt_dlp/extractor/glomex.py b/yt_dlp/extractor/glomex.py
index d9ef4338fc..85ffa4c052 100644
--- a/yt_dlp/extractor/glomex.py
+++ b/yt_dlp/extractor/glomex.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import urllib.parse
 
diff --git a/yt_dlp/extractor/go.py b/yt_dlp/extractor/go.py
index f92e16600e..07d13d1c33 100644
--- a/yt_dlp/extractor/go.py
+++ b/yt_dlp/extractor/go.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .adobepass import AdobePassIE
diff --git a/yt_dlp/extractor/godtube.py b/yt_dlp/extractor/godtube.py
index 96e68b4d20..697540155a 100644
--- a/yt_dlp/extractor/godtube.py
+++ b/yt_dlp/extractor/godtube.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/gofile.py b/yt_dlp/extractor/gofile.py
index 858bac52c3..b491b46a55 100644
--- a/yt_dlp/extractor/gofile.py
+++ b/yt_dlp/extractor/gofile.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/golem.py b/yt_dlp/extractor/golem.py
index 47a068e742..8416b5aa47 100644
--- a/yt_dlp/extractor/golem.py
+++ b/yt_dlp/extractor/golem.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/googledrive.py b/yt_dlp/extractor/googledrive.py
index 7b5bf280ff..c0905f86ae 100644
--- a/yt_dlp/extractor/googledrive.py
+++ b/yt_dlp/extractor/googledrive.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/googlepodcasts.py b/yt_dlp/extractor/googlepodcasts.py
index 25631e2134..8b2351ba88 100644
--- a/yt_dlp/extractor/googlepodcasts.py
+++ b/yt_dlp/extractor/googlepodcasts.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/googlesearch.py b/yt_dlp/extractor/googlesearch.py
index 4b8b1bcbb8..67ca0e5e0f 100644
--- a/yt_dlp/extractor/googlesearch.py
+++ b/yt_dlp/extractor/googlesearch.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/gopro.py b/yt_dlp/extractor/gopro.py
index 10cc1aec1d..14d6b21879 100644
--- a/yt_dlp/extractor/gopro.py
+++ b/yt_dlp/extractor/gopro.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/goshgay.py b/yt_dlp/extractor/goshgay.py
index 377981d3e4..9a1f32b7e3 100644
--- a/yt_dlp/extractor/goshgay.py
+++ b/yt_dlp/extractor/goshgay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_parse_qs,
diff --git a/yt_dlp/extractor/gotostage.py b/yt_dlp/extractor/gotostage.py
index 6aa96106a6..112293bef5 100644
--- a/yt_dlp/extractor/gotostage.py
+++ b/yt_dlp/extractor/gotostage.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/gputechconf.py b/yt_dlp/extractor/gputechconf.py
index 73dc62c494..2d13bf4915 100644
--- a/yt_dlp/extractor/gputechconf.py
+++ b/yt_dlp/extractor/gputechconf.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/gronkh.py b/yt_dlp/extractor/gronkh.py
index c9f1dd2566..52bbf3bc73 100644
--- a/yt_dlp/extractor/gronkh.py
+++ b/yt_dlp/extractor/gronkh.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import unified_strdate
 
diff --git a/yt_dlp/extractor/groupon.py b/yt_dlp/extractor/groupon.py
index a6da909310..362d3ff831 100644
--- a/yt_dlp/extractor/groupon.py
+++ b/yt_dlp/extractor/groupon.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/hbo.py b/yt_dlp/extractor/hbo.py
index 68df748f56..f546286651 100644
--- a/yt_dlp/extractor/hbo.py
+++ b/yt_dlp/extractor/hbo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/hearthisat.py b/yt_dlp/extractor/hearthisat.py
index a3d6a055fe..9aa1325afd 100644
--- a/yt_dlp/extractor/hearthisat.py
+++ b/yt_dlp/extractor/hearthisat.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/heise.py b/yt_dlp/extractor/heise.py
index cbe564a3cf..84e5d3023a 100644
--- a/yt_dlp/extractor/heise.py
+++ b/yt_dlp/extractor/heise.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .kaltura import KalturaIE
 from .youtube import YoutubeIE
diff --git a/yt_dlp/extractor/hellporno.py b/yt_dlp/extractor/hellporno.py
index 92d32cdcc8..fd0327228f 100644
--- a/yt_dlp/extractor/hellporno.py
+++ b/yt_dlp/extractor/hellporno.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/helsinki.py b/yt_dlp/extractor/helsinki.py
index 575fb332a0..b7c8260553 100644
--- a/yt_dlp/extractor/helsinki.py
+++ b/yt_dlp/extractor/helsinki.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import js_to_json
 
diff --git a/yt_dlp/extractor/hentaistigma.py b/yt_dlp/extractor/hentaistigma.py
index 86a93de4d6..ca5ffc2aea 100644
--- a/yt_dlp/extractor/hentaistigma.py
+++ b/yt_dlp/extractor/hentaistigma.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/hgtv.py b/yt_dlp/extractor/hgtv.py
index a4f3325650..c40017db18 100644
--- a/yt_dlp/extractor/hgtv.py
+++ b/yt_dlp/extractor/hgtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/hidive.py b/yt_dlp/extractor/hidive.py
index 46d7d62abf..a6a71d6307 100644
--- a/yt_dlp/extractor/hidive.py
+++ b/yt_dlp/extractor/hidive.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/historicfilms.py b/yt_dlp/extractor/historicfilms.py
index 56343e98fb..c428feeded 100644
--- a/yt_dlp/extractor/historicfilms.py
+++ b/yt_dlp/extractor/historicfilms.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import parse_duration
 
diff --git a/yt_dlp/extractor/hitbox.py b/yt_dlp/extractor/hitbox.py
index 0470d0a99c..a7e4424b6d 100644
--- a/yt_dlp/extractor/hitbox.py
+++ b/yt_dlp/extractor/hitbox.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/hitrecord.py b/yt_dlp/extractor/hitrecord.py
index fd5dc29357..902af44fab 100644
--- a/yt_dlp/extractor/hitrecord.py
+++ b/yt_dlp/extractor/hitrecord.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/hketv.py b/yt_dlp/extractor/hketv.py
index 1f3502b902..4c616d1ddc 100644
--- a/yt_dlp/extractor/hketv.py
+++ b/yt_dlp/extractor/hketv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/hotnewhiphop.py b/yt_dlp/extractor/hotnewhiphop.py
index 4703e1894f..f8570cb861 100644
--- a/yt_dlp/extractor/hotnewhiphop.py
+++ b/yt_dlp/extractor/hotnewhiphop.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_b64decode
 from ..utils import (
diff --git a/yt_dlp/extractor/hotstar.py b/yt_dlp/extractor/hotstar.py
index a0ce1f10a1..d82e1aead7 100644
--- a/yt_dlp/extractor/hotstar.py
+++ b/yt_dlp/extractor/hotstar.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import hmac
 import re
diff --git a/yt_dlp/extractor/howcast.py b/yt_dlp/extractor/howcast.py
index 7e36b85ad5..59cf80f1a4 100644
--- a/yt_dlp/extractor/howcast.py
+++ b/yt_dlp/extractor/howcast.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import parse_iso8601
 
diff --git a/yt_dlp/extractor/howstuffworks.py b/yt_dlp/extractor/howstuffworks.py
index cf90ab3c9d..c49c0899e0 100644
--- a/yt_dlp/extractor/howstuffworks.py
+++ b/yt_dlp/extractor/howstuffworks.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     find_xpath_attr,
diff --git a/yt_dlp/extractor/hrfensehen.py b/yt_dlp/extractor/hrfensehen.py
index e39ded2543..6f7ed9b4bc 100644
--- a/yt_dlp/extractor/hrfensehen.py
+++ b/yt_dlp/extractor/hrfensehen.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/hrti.py b/yt_dlp/extractor/hrti.py
index 36d6007736..773ae0c9a7 100644
--- a/yt_dlp/extractor/hrti.py
+++ b/yt_dlp/extractor/hrti.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/hse.py b/yt_dlp/extractor/hse.py
index 9144ff8dcc..9faf46a5d4 100644
--- a/yt_dlp/extractor/hse.py
+++ b/yt_dlp/extractor/hse.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/huajiao.py b/yt_dlp/extractor/huajiao.py
index 4ca275dda1..c498fa330c 100644
--- a/yt_dlp/extractor/huajiao.py
+++ b/yt_dlp/extractor/huajiao.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/huffpost.py b/yt_dlp/extractor/huffpost.py
index 54385bafa2..7286dbcd71 100644
--- a/yt_dlp/extractor/huffpost.py
+++ b/yt_dlp/extractor/huffpost.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/hungama.py b/yt_dlp/extractor/hungama.py
index 821b16e5dc..938a242962 100644
--- a/yt_dlp/extractor/hungama.py
+++ b/yt_dlp/extractor/hungama.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/huya.py b/yt_dlp/extractor/huya.py
index 4e96f22faa..9dd5e41b3e 100644
--- a/yt_dlp/extractor/huya.py
+++ b/yt_dlp/extractor/huya.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import random
 
diff --git a/yt_dlp/extractor/hypem.py b/yt_dlp/extractor/hypem.py
index 9ca28d632e..54db7b3eb0 100644
--- a/yt_dlp/extractor/hypem.py
+++ b/yt_dlp/extractor/hypem.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/ichinanalive.py b/yt_dlp/extractor/ichinanalive.py
index cb39f821c6..ffff36cc1f 100644
--- a/yt_dlp/extractor/ichinanalive.py
+++ b/yt_dlp/extractor/ichinanalive.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError, str_or_none, traverse_obj, unified_strdate
 from ..compat import compat_str
diff --git a/yt_dlp/extractor/ign.py b/yt_dlp/extractor/ign.py
index c826eb3bab..bfb1e9d649 100644
--- a/yt_dlp/extractor/ign.py
+++ b/yt_dlp/extractor/ign.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/iheart.py b/yt_dlp/extractor/iheart.py
index b54c05eeb0..2c6a5b6a1d 100644
--- a/yt_dlp/extractor/iheart.py
+++ b/yt_dlp/extractor/iheart.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/imdb.py b/yt_dlp/extractor/imdb.py
index 96cee2e2fc..74cab7dc1d 100644
--- a/yt_dlp/extractor/imdb.py
+++ b/yt_dlp/extractor/imdb.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import base64
 import json
 import re
diff --git a/yt_dlp/extractor/imggaming.py b/yt_dlp/extractor/imggaming.py
index ce7b21ab27..5b8bfda96f 100644
--- a/yt_dlp/extractor/imggaming.py
+++ b/yt_dlp/extractor/imggaming.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/imgur.py b/yt_dlp/extractor/imgur.py
index dfa4737522..a3bb476154 100644
--- a/yt_dlp/extractor/imgur.py
+++ b/yt_dlp/extractor/imgur.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ina.py b/yt_dlp/extractor/ina.py
index b3b2683cbb..56038f1ca4 100644
--- a/yt_dlp/extractor/ina.py
+++ b/yt_dlp/extractor/ina.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/inc.py b/yt_dlp/extractor/inc.py
index d5b258a0fc..9b3fe9ac14 100644
--- a/yt_dlp/extractor/inc.py
+++ b/yt_dlp/extractor/inc.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .kaltura import KalturaIE
 
diff --git a/yt_dlp/extractor/indavideo.py b/yt_dlp/extractor/indavideo.py
index 4c16243ec1..fb041a1821 100644
--- a/yt_dlp/extractor/indavideo.py
+++ b/yt_dlp/extractor/indavideo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/infoq.py b/yt_dlp/extractor/infoq.py
index 347cc51544..abf7d36ef0 100644
--- a/yt_dlp/extractor/infoq.py
+++ b/yt_dlp/extractor/infoq.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 from ..compat import (
     compat_b64decode,
     compat_urllib_parse_unquote,
diff --git a/yt_dlp/extractor/instagram.py b/yt_dlp/extractor/instagram.py
index 970f2c8abf..05000e2fb7 100644
--- a/yt_dlp/extractor/instagram.py
+++ b/yt_dlp/extractor/instagram.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 import itertools
 import hashlib
 import json
diff --git a/yt_dlp/extractor/internazionale.py b/yt_dlp/extractor/internazionale.py
index 45e2af6905..c8f70785f1 100644
--- a/yt_dlp/extractor/internazionale.py
+++ b/yt_dlp/extractor/internazionale.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import unified_timestamp
 
diff --git a/yt_dlp/extractor/internetvideoarchive.py b/yt_dlp/extractor/internetvideoarchive.py
index 880918cd79..6a8e30d73d 100644
--- a/yt_dlp/extractor/internetvideoarchive.py
+++ b/yt_dlp/extractor/internetvideoarchive.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/iprima.py b/yt_dlp/extractor/iprima.py
index 1a20384539..5e0b523dcb 100644
--- a/yt_dlp/extractor/iprima.py
+++ b/yt_dlp/extractor/iprima.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import time
 
diff --git a/yt_dlp/extractor/iqiyi.py b/yt_dlp/extractor/iqiyi.py
index 14877d4055..b755aab078 100644
--- a/yt_dlp/extractor/iqiyi.py
+++ b/yt_dlp/extractor/iqiyi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import itertools
 import re
diff --git a/yt_dlp/extractor/itprotv.py b/yt_dlp/extractor/itprotv.py
index 64cb4e69af..4ac12603ae 100644
--- a/yt_dlp/extractor/itprotv.py
+++ b/yt_dlp/extractor/itprotv.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/itv.py b/yt_dlp/extractor/itv.py
index f1591403f0..26d77a4695 100644
--- a/yt_dlp/extractor/itv.py
+++ b/yt_dlp/extractor/itv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ivi.py b/yt_dlp/extractor/ivi.py
index 5f8a046e08..6997469438 100644
--- a/yt_dlp/extractor/ivi.py
+++ b/yt_dlp/extractor/ivi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/ivideon.py b/yt_dlp/extractor/ivideon.py
index 44b2208468..538a961b70 100644
--- a/yt_dlp/extractor/ivideon.py
+++ b/yt_dlp/extractor/ivideon.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urllib_parse_urlencode,
diff --git a/yt_dlp/extractor/iwara.py b/yt_dlp/extractor/iwara.py
index c0e01e3522..974b4be7d8 100644
--- a/yt_dlp/extractor/iwara.py
+++ b/yt_dlp/extractor/iwara.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/izlesene.py b/yt_dlp/extractor/izlesene.py
index f8fca6c8f4..6520ecf6d1 100644
--- a/yt_dlp/extractor/izlesene.py
+++ b/yt_dlp/extractor/izlesene.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/jable.py b/yt_dlp/extractor/jable.py
index b294aee704..6840654cc3 100644
--- a/yt_dlp/extractor/jable.py
+++ b/yt_dlp/extractor/jable.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/jamendo.py b/yt_dlp/extractor/jamendo.py
index 755d9703bd..5dc2c25e6a 100644
--- a/yt_dlp/extractor/jamendo.py
+++ b/yt_dlp/extractor/jamendo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import random
 
diff --git a/yt_dlp/extractor/jeuxvideo.py b/yt_dlp/extractor/jeuxvideo.py
index 77c0f520ca..56ea15cf95 100644
--- a/yt_dlp/extractor/jeuxvideo.py
+++ b/yt_dlp/extractor/jeuxvideo.py
@@ -1,8 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/joj.py b/yt_dlp/extractor/joj.py
index 7350f537c6..a01411be10 100644
--- a/yt_dlp/extractor/joj.py
+++ b/yt_dlp/extractor/joj.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/jove.py b/yt_dlp/extractor/jove.py
index 4b7dfc5264..245fe73d4a 100644
--- a/yt_dlp/extractor/jove.py
+++ b/yt_dlp/extractor/jove.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/jwplatform.py b/yt_dlp/extractor/jwplatform.py
index 5aa508bf98..8dbbb29260 100644
--- a/yt_dlp/extractor/jwplatform.py
+++ b/yt_dlp/extractor/jwplatform.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/kakao.py b/yt_dlp/extractor/kakao.py
index 483ab71286..8ad1d9efd8 100644
--- a/yt_dlp/extractor/kakao.py
+++ b/yt_dlp/extractor/kakao.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_HTTPError
 from ..utils import (
diff --git a/yt_dlp/extractor/kaltura.py b/yt_dlp/extractor/kaltura.py
index f6dfc9caae..f9b9c5c78c 100644
--- a/yt_dlp/extractor/kaltura.py
+++ b/yt_dlp/extractor/kaltura.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import base64
 
diff --git a/yt_dlp/extractor/kanalplay.py b/yt_dlp/extractor/kanalplay.py
index 5e24f7e216..ef74014c0c 100644
--- a/yt_dlp/extractor/kanalplay.py
+++ b/yt_dlp/extractor/kanalplay.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/karaoketv.py b/yt_dlp/extractor/karaoketv.py
index bfccf89b0f..381dc00ad7 100644
--- a/yt_dlp/extractor/karaoketv.py
+++ b/yt_dlp/extractor/karaoketv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/karrierevideos.py b/yt_dlp/extractor/karrierevideos.py
index 7b291e0a05..28d4841aa3 100644
--- a/yt_dlp/extractor/karrierevideos.py
+++ b/yt_dlp/extractor/karrierevideos.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/keezmovies.py b/yt_dlp/extractor/keezmovies.py
index 06dbcbb402..79f9c7fa78 100644
--- a/yt_dlp/extractor/keezmovies.py
+++ b/yt_dlp/extractor/keezmovies.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/kelbyone.py b/yt_dlp/extractor/kelbyone.py
index 20c26cf482..dea056c127 100644
--- a/yt_dlp/extractor/kelbyone.py
+++ b/yt_dlp/extractor/kelbyone.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/ketnet.py b/yt_dlp/extractor/ketnet.py
index e0599d02fa..ab6276727a 100644
--- a/yt_dlp/extractor/ketnet.py
+++ b/yt_dlp/extractor/ketnet.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .canvas import CanvasIE
 from .common import InfoExtractor
 from ..compat import compat_urllib_parse_unquote
diff --git a/yt_dlp/extractor/khanacademy.py b/yt_dlp/extractor/khanacademy.py
index 87e520378b..83cfeadba7 100644
--- a/yt_dlp/extractor/khanacademy.py
+++ b/yt_dlp/extractor/khanacademy.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/kickstarter.py b/yt_dlp/extractor/kickstarter.py
index d4da8f4846..c0d851d961 100644
--- a/yt_dlp/extractor/kickstarter.py
+++ b/yt_dlp/extractor/kickstarter.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import smuggle_url
 
diff --git a/yt_dlp/extractor/kinja.py b/yt_dlp/extractor/kinja.py
index 1be8b48091..c00abfbc11 100644
--- a/yt_dlp/extractor/kinja.py
+++ b/yt_dlp/extractor/kinja.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/kinopoisk.py b/yt_dlp/extractor/kinopoisk.py
index cdbb642e23..84a2489a31 100644
--- a/yt_dlp/extractor/kinopoisk.py
+++ b/yt_dlp/extractor/kinopoisk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     dict_get,
diff --git a/yt_dlp/extractor/konserthusetplay.py b/yt_dlp/extractor/konserthusetplay.py
index dd42bb2f27..1e177c3637 100644
--- a/yt_dlp/extractor/konserthusetplay.py
+++ b/yt_dlp/extractor/konserthusetplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/koo.py b/yt_dlp/extractor/koo.py
index 088db1cb01..892d355bad 100644
--- a/yt_dlp/extractor/koo.py
+++ b/yt_dlp/extractor/koo.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/krasview.py b/yt_dlp/extractor/krasview.py
index d27d052ff0..4323aa4292 100644
--- a/yt_dlp/extractor/krasview.py
+++ b/yt_dlp/extractor/krasview.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ku6.py b/yt_dlp/extractor/ku6.py
index a574408e55..31b4ea0c60 100644
--- a/yt_dlp/extractor/ku6.py
+++ b/yt_dlp/extractor/ku6.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/kusi.py b/yt_dlp/extractor/kusi.py
index 707fe18213..f1221ef1be 100644
--- a/yt_dlp/extractor/kusi.py
+++ b/yt_dlp/extractor/kusi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/kuwo.py b/yt_dlp/extractor/kuwo.py
index 460a4252f4..0c9518e661 100644
--- a/yt_dlp/extractor/kuwo.py
+++ b/yt_dlp/extractor/kuwo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/la7.py b/yt_dlp/extractor/la7.py
index de985e4508..5d52decdba 100644
--- a/yt_dlp/extractor/la7.py
+++ b/yt_dlp/extractor/la7.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/laola1tv.py b/yt_dlp/extractor/laola1tv.py
index b5d27c2f07..4014a9256f 100644
--- a/yt_dlp/extractor/laola1tv.py
+++ b/yt_dlp/extractor/laola1tv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/lastfm.py b/yt_dlp/extractor/lastfm.py
index 5215717e8d..7ba666d064 100644
--- a/yt_dlp/extractor/lastfm.py
+++ b/yt_dlp/extractor/lastfm.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/lbry.py b/yt_dlp/extractor/lbry.py
index 5d5457c532..953ce2e184 100644
--- a/yt_dlp/extractor/lbry.py
+++ b/yt_dlp/extractor/lbry.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import json
 
diff --git a/yt_dlp/extractor/lci.py b/yt_dlp/extractor/lci.py
index 920872f5c4..81cf88b6c7 100644
--- a/yt_dlp/extractor/lci.py
+++ b/yt_dlp/extractor/lci.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/lcp.py b/yt_dlp/extractor/lcp.py
index ade27a99e0..87543d56f8 100644
--- a/yt_dlp/extractor/lcp.py
+++ b/yt_dlp/extractor/lcp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .arkena import ArkenaIE
 
diff --git a/yt_dlp/extractor/lecture2go.py b/yt_dlp/extractor/lecture2go.py
index 81b5d41be4..bee4e7587b 100644
--- a/yt_dlp/extractor/lecture2go.py
+++ b/yt_dlp/extractor/lecture2go.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/lecturio.py b/yt_dlp/extractor/lecturio.py
index 0ee1eeb4d3..c3d0cb193b 100644
--- a/yt_dlp/extractor/lecturio.py
+++ b/yt_dlp/extractor/lecturio.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/leeco.py b/yt_dlp/extractor/leeco.py
index d5e11423ca..258e396cbd 100644
--- a/yt_dlp/extractor/leeco.py
+++ b/yt_dlp/extractor/leeco.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 import hashlib
 import re
diff --git a/yt_dlp/extractor/lego.py b/yt_dlp/extractor/lego.py
index 901f43bcf3..7d0238a1f1 100644
--- a/yt_dlp/extractor/lego.py
+++ b/yt_dlp/extractor/lego.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import uuid
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/lemonde.py b/yt_dlp/extractor/lemonde.py
index 3306892e8d..c916791af5 100644
--- a/yt_dlp/extractor/lemonde.py
+++ b/yt_dlp/extractor/lemonde.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/lenta.py b/yt_dlp/extractor/lenta.py
index 2ebd4e5778..10aac984e4 100644
--- a/yt_dlp/extractor/lenta.py
+++ b/yt_dlp/extractor/lenta.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/libraryofcongress.py b/yt_dlp/extractor/libraryofcongress.py
index 03f2051444..afe3c98a11 100644
--- a/yt_dlp/extractor/libraryofcongress.py
+++ b/yt_dlp/extractor/libraryofcongress.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/libsyn.py b/yt_dlp/extractor/libsyn.py
index d1fcda4ef8..8245a34817 100644
--- a/yt_dlp/extractor/libsyn.py
+++ b/yt_dlp/extractor/libsyn.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/lifenews.py b/yt_dlp/extractor/lifenews.py
index 49a0a59890..8c7d2064d3 100644
--- a/yt_dlp/extractor/lifenews.py
+++ b/yt_dlp/extractor/lifenews.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/limelight.py b/yt_dlp/extractor/limelight.py
index b20681ad11..25667fc076 100644
--- a/yt_dlp/extractor/limelight.py
+++ b/yt_dlp/extractor/limelight.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/line.py b/yt_dlp/extractor/line.py
index 987c434300..63b6c002ab 100644
--- a/yt_dlp/extractor/line.py
+++ b/yt_dlp/extractor/line.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/linkedin.py b/yt_dlp/extractor/linkedin.py
index 0f57bfa06f..27f1080b44 100644
--- a/yt_dlp/extractor/linkedin.py
+++ b/yt_dlp/extractor/linkedin.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from itertools import zip_longest
 import re
 
diff --git a/yt_dlp/extractor/linuxacademy.py b/yt_dlp/extractor/linuxacademy.py
index 6aff88e13f..bf22855a98 100644
--- a/yt_dlp/extractor/linuxacademy.py
+++ b/yt_dlp/extractor/linuxacademy.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 import random
 
diff --git a/yt_dlp/extractor/litv.py b/yt_dlp/extractor/litv.py
index 16b475a441..31826ac99e 100644
--- a/yt_dlp/extractor/litv.py
+++ b/yt_dlp/extractor/litv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/livejournal.py b/yt_dlp/extractor/livejournal.py
index 3a9f4553f4..96bd8b2335 100644
--- a/yt_dlp/extractor/livejournal.py
+++ b/yt_dlp/extractor/livejournal.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import int_or_none
diff --git a/yt_dlp/extractor/livestream.py b/yt_dlp/extractor/livestream.py
index 45bf26d26c..4b90c22c56 100644
--- a/yt_dlp/extractor/livestream.py
+++ b/yt_dlp/extractor/livestream.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 import itertools
 
diff --git a/yt_dlp/extractor/lnkgo.py b/yt_dlp/extractor/lnkgo.py
index bd2dffac0c..3bb52777f6 100644
--- a/yt_dlp/extractor/lnkgo.py
+++ b/yt_dlp/extractor/lnkgo.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/localnews8.py b/yt_dlp/extractor/localnews8.py
index c3e9d10fae..6f3f02c705 100644
--- a/yt_dlp/extractor/localnews8.py
+++ b/yt_dlp/extractor/localnews8.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/lovehomeporn.py b/yt_dlp/extractor/lovehomeporn.py
index ca4b5f3755..ba5a13acd8 100644
--- a/yt_dlp/extractor/lovehomeporn.py
+++ b/yt_dlp/extractor/lovehomeporn.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .nuevo import NuevoBaseIE
 
 
diff --git a/yt_dlp/extractor/lrt.py b/yt_dlp/extractor/lrt.py
index 4024aef73a..53076b839f 100644
--- a/yt_dlp/extractor/lrt.py
+++ b/yt_dlp/extractor/lrt.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/lynda.py b/yt_dlp/extractor/lynda.py
index ce304743fb..1ae7f9d4fe 100644
--- a/yt_dlp/extractor/lynda.py
+++ b/yt_dlp/extractor/lynda.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/m6.py b/yt_dlp/extractor/m6.py
index 9806875e8d..9dcc601642 100644
--- a/yt_dlp/extractor/m6.py
+++ b/yt_dlp/extractor/m6.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/magentamusik360.py b/yt_dlp/extractor/magentamusik360.py
index 5c274902f9..5d0cb3bfb5 100644
--- a/yt_dlp/extractor/magentamusik360.py
+++ b/yt_dlp/extractor/magentamusik360.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/mailru.py b/yt_dlp/extractor/mailru.py
index 5d9f80bb31..5f30d0eaa8 100644
--- a/yt_dlp/extractor/mailru.py
+++ b/yt_dlp/extractor/mailru.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import json
 import re
diff --git a/yt_dlp/extractor/mainstreaming.py b/yt_dlp/extractor/mainstreaming.py
index 0f349a7a38..c144c75928 100644
--- a/yt_dlp/extractor/mainstreaming.py
+++ b/yt_dlp/extractor/mainstreaming.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/malltv.py b/yt_dlp/extractor/malltv.py
index fadfd93387..bfd6008b3a 100644
--- a/yt_dlp/extractor/malltv.py
+++ b/yt_dlp/extractor/malltv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/mangomolo.py b/yt_dlp/extractor/mangomolo.py
index 68ce138b3e..a392e9b542 100644
--- a/yt_dlp/extractor/mangomolo.py
+++ b/yt_dlp/extractor/mangomolo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_b64decode,
diff --git a/yt_dlp/extractor/manoto.py b/yt_dlp/extractor/manoto.py
index d12aa5f600..dc8653f5d5 100644
--- a/yt_dlp/extractor/manoto.py
+++ b/yt_dlp/extractor/manoto.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/manyvids.py b/yt_dlp/extractor/manyvids.py
index bd24f88535..1f537d2673 100644
--- a/yt_dlp/extractor/manyvids.py
+++ b/yt_dlp/extractor/manyvids.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/maoritv.py b/yt_dlp/extractor/maoritv.py
index 0d23fec75e..67780eafcc 100644
--- a/yt_dlp/extractor/maoritv.py
+++ b/yt_dlp/extractor/maoritv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/markiza.py b/yt_dlp/extractor/markiza.py
index def960a0c5..53ed79158f 100644
--- a/yt_dlp/extractor/markiza.py
+++ b/yt_dlp/extractor/markiza.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/massengeschmacktv.py b/yt_dlp/extractor/massengeschmacktv.py
index b381d31b48..4508e4391a 100644
--- a/yt_dlp/extractor/massengeschmacktv.py
+++ b/yt_dlp/extractor/massengeschmacktv.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/matchtv.py b/yt_dlp/extractor/matchtv.py
index e003b8d259..94ae20b26f 100644
--- a/yt_dlp/extractor/matchtv.py
+++ b/yt_dlp/extractor/matchtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mdr.py b/yt_dlp/extractor/mdr.py
index 3ca174c2b9..b44cf809ad 100644
--- a/yt_dlp/extractor/mdr.py
+++ b/yt_dlp/extractor/mdr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/medaltv.py b/yt_dlp/extractor/medaltv.py
index 59cc30736c..527b50cb02 100644
--- a/yt_dlp/extractor/medaltv.py
+++ b/yt_dlp/extractor/medaltv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mediaite.py b/yt_dlp/extractor/mediaite.py
index b670f0d615..0f9079b112 100644
--- a/yt_dlp/extractor/mediaite.py
+++ b/yt_dlp/extractor/mediaite.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/mediaklikk.py b/yt_dlp/extractor/mediaklikk.py
index 18ff3befae..f9a449377e 100644
--- a/yt_dlp/extractor/mediaklikk.py
+++ b/yt_dlp/extractor/mediaklikk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from ..utils import (
     unified_strdate
 )
diff --git a/yt_dlp/extractor/medialaan.py b/yt_dlp/extractor/medialaan.py
index 788acf7fb2..297f8c4b25 100644
--- a/yt_dlp/extractor/medialaan.py
+++ b/yt_dlp/extractor/medialaan.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mediaset.py b/yt_dlp/extractor/mediaset.py
index d6b456c5d5..60c454ddad 100644
--- a/yt_dlp/extractor/mediaset.py
+++ b/yt_dlp/extractor/mediaset.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/mediasite.py b/yt_dlp/extractor/mediasite.py
index fbf9223b21..30464bad0e 100644
--- a/yt_dlp/extractor/mediasite.py
+++ b/yt_dlp/extractor/mediasite.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import json
 
diff --git a/yt_dlp/extractor/medici.py b/yt_dlp/extractor/medici.py
index cd910238e8..328ccd2c9b 100644
--- a/yt_dlp/extractor/medici.py
+++ b/yt_dlp/extractor/medici.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     unified_strdate,
diff --git a/yt_dlp/extractor/megaphone.py b/yt_dlp/extractor/megaphone.py
index 5bafa6cf44..0c150ef45c 100644
--- a/yt_dlp/extractor/megaphone.py
+++ b/yt_dlp/extractor/megaphone.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/megatvcom.py b/yt_dlp/extractor/megatvcom.py
index 0d6793acdb..ec481d016c 100644
--- a/yt_dlp/extractor/megatvcom.py
+++ b/yt_dlp/extractor/megatvcom.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/meipai.py b/yt_dlp/extractor/meipai.py
index 2445b8b398..95b6dfe52e 100644
--- a/yt_dlp/extractor/meipai.py
+++ b/yt_dlp/extractor/meipai.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/melonvod.py b/yt_dlp/extractor/melonvod.py
index bd8cf13ab4..0cbc961c42 100644
--- a/yt_dlp/extractor/melonvod.py
+++ b/yt_dlp/extractor/melonvod.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/meta.py b/yt_dlp/extractor/meta.py
index cdb46e163b..7c11e6017e 100644
--- a/yt_dlp/extractor/meta.py
+++ b/yt_dlp/extractor/meta.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .pladform import PladformIE
 from ..utils import (
diff --git a/yt_dlp/extractor/metacafe.py b/yt_dlp/extractor/metacafe.py
index 7b2d4a0031..31fec86d28 100644
--- a/yt_dlp/extractor/metacafe.py
+++ b/yt_dlp/extractor/metacafe.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/metacritic.py b/yt_dlp/extractor/metacritic.py
index 1424288e74..543bdffadd 100644
--- a/yt_dlp/extractor/metacritic.py
+++ b/yt_dlp/extractor/metacritic.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mgoon.py b/yt_dlp/extractor/mgoon.py
index 184c311bec..c41c513844 100644
--- a/yt_dlp/extractor/mgoon.py
+++ b/yt_dlp/extractor/mgoon.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/mgtv.py b/yt_dlp/extractor/mgtv.py
index 4ac70ea575..96f3fb9825 100644
--- a/yt_dlp/extractor/mgtv.py
+++ b/yt_dlp/extractor/mgtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import time
 import uuid
diff --git a/yt_dlp/extractor/miaopai.py b/yt_dlp/extractor/miaopai.py
index cf0610bdf4..329ce36582 100644
--- a/yt_dlp/extractor/miaopai.py
+++ b/yt_dlp/extractor/miaopai.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/microsoftstream.py b/yt_dlp/extractor/microsoftstream.py
index 4d5a9df1ff..2dde82a752 100644
--- a/yt_dlp/extractor/microsoftstream.py
+++ b/yt_dlp/extractor/microsoftstream.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from base64 import b64decode
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/microsoftvirtualacademy.py b/yt_dlp/extractor/microsoftvirtualacademy.py
index 9255a79641..f15f00ee57 100644
--- a/yt_dlp/extractor/microsoftvirtualacademy.py
+++ b/yt_dlp/extractor/microsoftvirtualacademy.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mildom.py b/yt_dlp/extractor/mildom.py
index 4de8e9ef4d..c7a61dfa0a 100644
--- a/yt_dlp/extractor/mildom.py
+++ b/yt_dlp/extractor/mildom.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import json
 import uuid
diff --git a/yt_dlp/extractor/minds.py b/yt_dlp/extractor/minds.py
index 9da07207ba..393d20604b 100644
--- a/yt_dlp/extractor/minds.py
+++ b/yt_dlp/extractor/minds.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/ministrygrid.py b/yt_dlp/extractor/ministrygrid.py
index 8ad9239c50..053c6726c3 100644
--- a/yt_dlp/extractor/ministrygrid.py
+++ b/yt_dlp/extractor/ministrygrid.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/minoto.py b/yt_dlp/extractor/minoto.py
index 603ce940ba..e799cd3bcc 100644
--- a/yt_dlp/extractor/minoto.py
+++ b/yt_dlp/extractor/minoto.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/miomio.py b/yt_dlp/extractor/miomio.py
index 40f72d66f2..a0a041ea54 100644
--- a/yt_dlp/extractor/miomio.py
+++ b/yt_dlp/extractor/miomio.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mirrativ.py b/yt_dlp/extractor/mirrativ.py
index 2111de615a..8192f2b467 100644
--- a/yt_dlp/extractor/mirrativ.py
+++ b/yt_dlp/extractor/mirrativ.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/mit.py b/yt_dlp/extractor/mit.py
index 60e4569785..38cc0c2741 100644
--- a/yt_dlp/extractor/mit.py
+++ b/yt_dlp/extractor/mit.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 import json
 
diff --git a/yt_dlp/extractor/mitele.py b/yt_dlp/extractor/mitele.py
index b5937233b9..12b2b2432d 100644
--- a/yt_dlp/extractor/mitele.py
+++ b/yt_dlp/extractor/mitele.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .telecinco import TelecincoIE
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/mixch.py b/yt_dlp/extractor/mixch.py
index 31f450dfa0..3f430a7176 100644
--- a/yt_dlp/extractor/mixch.py
+++ b/yt_dlp/extractor/mixch.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/mixcloud.py b/yt_dlp/extractor/mixcloud.py
index b19e59b1a5..796f268f43 100644
--- a/yt_dlp/extractor/mixcloud.py
+++ b/yt_dlp/extractor/mixcloud.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mlb.py b/yt_dlp/extractor/mlb.py
index b69301d977..5fb97083a0 100644
--- a/yt_dlp/extractor/mlb.py
+++ b/yt_dlp/extractor/mlb.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mlssoccer.py b/yt_dlp/extractor/mlssoccer.py
index 1d6d4b8040..9383f13581 100644
--- a/yt_dlp/extractor/mlssoccer.py
+++ b/yt_dlp/extractor/mlssoccer.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/mnet.py b/yt_dlp/extractor/mnet.py
index 0e26ca1b30..65e3d476a9 100644
--- a/yt_dlp/extractor/mnet.py
+++ b/yt_dlp/extractor/mnet.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/moevideo.py b/yt_dlp/extractor/moevideo.py
index a3f1b38663..fda08cae91 100644
--- a/yt_dlp/extractor/moevideo.py
+++ b/yt_dlp/extractor/moevideo.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/mofosex.py b/yt_dlp/extractor/mofosex.py
index 5234cac026..66a098c976 100644
--- a/yt_dlp/extractor/mofosex.py
+++ b/yt_dlp/extractor/mofosex.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mojvideo.py b/yt_dlp/extractor/mojvideo.py
index 16d94052bd..d47ad07421 100644
--- a/yt_dlp/extractor/mojvideo.py
+++ b/yt_dlp/extractor/mojvideo.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/morningstar.py b/yt_dlp/extractor/morningstar.py
index 71a22a614c..e9fcfe3e20 100644
--- a/yt_dlp/extractor/morningstar.py
+++ b/yt_dlp/extractor/morningstar.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/motherless.py b/yt_dlp/extractor/motherless.py
index 111c7c5442..9e53a8a97d 100644
--- a/yt_dlp/extractor/motherless.py
+++ b/yt_dlp/extractor/motherless.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import datetime
 import re
 
diff --git a/yt_dlp/extractor/motorsport.py b/yt_dlp/extractor/motorsport.py
index c9d1ab64dc..b292aeb9a1 100644
--- a/yt_dlp/extractor/motorsport.py
+++ b/yt_dlp/extractor/motorsport.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urlparse,
diff --git a/yt_dlp/extractor/movieclips.py b/yt_dlp/extractor/movieclips.py
index 5453da1acf..4777f440e0 100644
--- a/yt_dlp/extractor/movieclips.py
+++ b/yt_dlp/extractor/movieclips.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     smuggle_url,
diff --git a/yt_dlp/extractor/moviepilot.py b/yt_dlp/extractor/moviepilot.py
index 4605d34815..ca541567a4 100644
--- a/yt_dlp/extractor/moviepilot.py
+++ b/yt_dlp/extractor/moviepilot.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .dailymotion import DailymotionIE
 from .common import InfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/moviezine.py b/yt_dlp/extractor/moviezine.py
index 730da4bd70..5757322d66 100644
--- a/yt_dlp/extractor/moviezine.py
+++ b/yt_dlp/extractor/moviezine.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/movingimage.py b/yt_dlp/extractor/movingimage.py
index 4f62d628a2..cdd8ba4dce 100644
--- a/yt_dlp/extractor/movingimage.py
+++ b/yt_dlp/extractor/movingimage.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     unescapeHTML,
diff --git a/yt_dlp/extractor/msn.py b/yt_dlp/extractor/msn.py
index f34e2102c2..6f4935e513 100644
--- a/yt_dlp/extractor/msn.py
+++ b/yt_dlp/extractor/msn.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/mtv.py b/yt_dlp/extractor/mtv.py
index cff314e272..3ef851e0bb 100644
--- a/yt_dlp/extractor/mtv.py
+++ b/yt_dlp/extractor/mtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/muenchentv.py b/yt_dlp/extractor/muenchentv.py
index a53929e1b4..b9681d1bd7 100644
--- a/yt_dlp/extractor/muenchentv.py
+++ b/yt_dlp/extractor/muenchentv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/murrtube.py b/yt_dlp/extractor/murrtube.py
index 1eb5de6606..508d512479 100644
--- a/yt_dlp/extractor/murrtube.py
+++ b/yt_dlp/extractor/murrtube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import json
 
diff --git a/yt_dlp/extractor/musescore.py b/yt_dlp/extractor/musescore.py
index 09fadf8d90..289ae57335 100644
--- a/yt_dlp/extractor/musescore.py
+++ b/yt_dlp/extractor/musescore.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/musicdex.py b/yt_dlp/extractor/musicdex.py
index 05f722091b..4d8e74f6b4 100644
--- a/yt_dlp/extractor/musicdex.py
+++ b/yt_dlp/extractor/musicdex.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     date_from_str,
diff --git a/yt_dlp/extractor/mwave.py b/yt_dlp/extractor/mwave.py
index a67276596f..0cbb167362 100644
--- a/yt_dlp/extractor/mwave.py
+++ b/yt_dlp/extractor/mwave.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/mxplayer.py b/yt_dlp/extractor/mxplayer.py
index 3c2afd838d..cdc340a80f 100644
--- a/yt_dlp/extractor/mxplayer.py
+++ b/yt_dlp/extractor/mxplayer.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import try_get
diff --git a/yt_dlp/extractor/mychannels.py b/yt_dlp/extractor/mychannels.py
index d820d4eb8f..8a70c1f7b4 100644
--- a/yt_dlp/extractor/mychannels.py
+++ b/yt_dlp/extractor/mychannels.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/myspace.py b/yt_dlp/extractor/myspace.py
index 4227d42481..63d36c30a7 100644
--- a/yt_dlp/extractor/myspace.py
+++ b/yt_dlp/extractor/myspace.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/myspass.py b/yt_dlp/extractor/myspass.py
index 1775d5f0be..28ac982d66 100644
--- a/yt_dlp/extractor/myspass.py
+++ b/yt_dlp/extractor/myspass.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/myvi.py b/yt_dlp/extractor/myvi.py
index 75d2863655..b31cf4493a 100644
--- a/yt_dlp/extractor/myvi.py
+++ b/yt_dlp/extractor/myvi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/myvideoge.py b/yt_dlp/extractor/myvideoge.py
index 0a1d7d0cbc..513d4cb773 100644
--- a/yt_dlp/extractor/myvideoge.py
+++ b/yt_dlp/extractor/myvideoge.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import js_to_json
 
diff --git a/yt_dlp/extractor/myvidster.py b/yt_dlp/extractor/myvidster.py
index 2117d302d6..c91f294bf0 100644
--- a/yt_dlp/extractor/myvidster.py
+++ b/yt_dlp/extractor/myvidster.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/n1.py b/yt_dlp/extractor/n1.py
index fdb7f32dbe..cc0ff533e7 100644
--- a/yt_dlp/extractor/n1.py
+++ b/yt_dlp/extractor/n1.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nate.py b/yt_dlp/extractor/nate.py
index 072faf6ea3..c83b2acbd8 100644
--- a/yt_dlp/extractor/nate.py
+++ b/yt_dlp/extractor/nate.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nationalgeographic.py b/yt_dlp/extractor/nationalgeographic.py
index ee12e2b47f..f22317d561 100644
--- a/yt_dlp/extractor/nationalgeographic.py
+++ b/yt_dlp/extractor/nationalgeographic.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .fox import FOXIE
 from ..utils import (
diff --git a/yt_dlp/extractor/naver.py b/yt_dlp/extractor/naver.py
index a6821ba86d..a230d9cdd5 100644
--- a/yt_dlp/extractor/naver.py
+++ b/yt_dlp/extractor/naver.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nba.py b/yt_dlp/extractor/nba.py
index 359cc52b73..e95c1b795c 100644
--- a/yt_dlp/extractor/nba.py
+++ b/yt_dlp/extractor/nba.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/nbc.py b/yt_dlp/extractor/nbc.py
index 109403440a..8aab80a0f7 100644
--- a/yt_dlp/extractor/nbc.py
+++ b/yt_dlp/extractor/nbc.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import base64
 import json
 import re
diff --git a/yt_dlp/extractor/ndr.py b/yt_dlp/extractor/ndr.py
index 1917254b8d..de0142ccf7 100644
--- a/yt_dlp/extractor/ndr.py
+++ b/yt_dlp/extractor/ndr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/ndtv.py b/yt_dlp/extractor/ndtv.py
index bc3eb91606..fbb033169f 100644
--- a/yt_dlp/extractor/ndtv.py
+++ b/yt_dlp/extractor/ndtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urllib_parse_unquote_plus
diff --git a/yt_dlp/extractor/nebula.py b/yt_dlp/extractor/nebula.py
index 77f253519e..eccf740aad 100644
--- a/yt_dlp/extractor/nebula.py
+++ b/yt_dlp/extractor/nebula.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import json
 import time
diff --git a/yt_dlp/extractor/nerdcubed.py b/yt_dlp/extractor/nerdcubed.py
index 9feccc6723..7c801b5d38 100644
--- a/yt_dlp/extractor/nerdcubed.py
+++ b/yt_dlp/extractor/nerdcubed.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/neteasemusic.py b/yt_dlp/extractor/neteasemusic.py
index 57b4774b6b..4def7e76bc 100644
--- a/yt_dlp/extractor/neteasemusic.py
+++ b/yt_dlp/extractor/neteasemusic.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from hashlib import md5
 from base64 import b64encode
 from datetime import datetime
diff --git a/yt_dlp/extractor/netzkino.py b/yt_dlp/extractor/netzkino.py
index 4ad0d8e96c..49b29b67cc 100644
--- a/yt_dlp/extractor/netzkino.py
+++ b/yt_dlp/extractor/netzkino.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/newgrounds.py b/yt_dlp/extractor/newgrounds.py
index 6525a6d8a3..ba24720e32 100644
--- a/yt_dlp/extractor/newgrounds.py
+++ b/yt_dlp/extractor/newgrounds.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/newstube.py b/yt_dlp/extractor/newstube.py
index 479141ae03..20db460573 100644
--- a/yt_dlp/extractor/newstube.py
+++ b/yt_dlp/extractor/newstube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import hashlib
 
diff --git a/yt_dlp/extractor/newsy.py b/yt_dlp/extractor/newsy.py
index cf31641004..9fde6c0790 100644
--- a/yt_dlp/extractor/newsy.py
+++ b/yt_dlp/extractor/newsy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     js_to_json,
diff --git a/yt_dlp/extractor/nextmedia.py b/yt_dlp/extractor/nextmedia.py
index 7bd1290bf0..1f83089fc9 100644
--- a/yt_dlp/extractor/nextmedia.py
+++ b/yt_dlp/extractor/nextmedia.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/nexx.py b/yt_dlp/extractor/nexx.py
index a521bb6e49..01376be3da 100644
--- a/yt_dlp/extractor/nexx.py
+++ b/yt_dlp/extractor/nexx.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import random
 import re
diff --git a/yt_dlp/extractor/nfb.py b/yt_dlp/extractor/nfb.py
index a12e503de2..79c6aaf0cb 100644
--- a/yt_dlp/extractor/nfb.py
+++ b/yt_dlp/extractor/nfb.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/nfhsnetwork.py b/yt_dlp/extractor/nfhsnetwork.py
index 802f6caf06..e6f98b036a 100644
--- a/yt_dlp/extractor/nfhsnetwork.py
+++ b/yt_dlp/extractor/nfhsnetwork.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/nfl.py b/yt_dlp/extractor/nfl.py
index 821276a31b..e5810b3464 100644
--- a/yt_dlp/extractor/nfl.py
+++ b/yt_dlp/extractor/nfl.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nhk.py b/yt_dlp/extractor/nhk.py
index 3b8efc3e60..cf2ec7b793 100644
--- a/yt_dlp/extractor/nhk.py
+++ b/yt_dlp/extractor/nhk.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nhl.py b/yt_dlp/extractor/nhl.py
index d3a5e17e94..884f9e2aed 100644
--- a/yt_dlp/extractor/nhl.py
+++ b/yt_dlp/extractor/nhl.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/nick.py b/yt_dlp/extractor/nick.py
index ba7da76026..2a228d8de2 100644
--- a/yt_dlp/extractor/nick.py
+++ b/yt_dlp/extractor/nick.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .mtv import MTVServicesInfoExtractor
 from ..utils import update_url_query
 
diff --git a/yt_dlp/extractor/niconico.py b/yt_dlp/extractor/niconico.py
index 4eb6ed070a..e60556a4d2 100644
--- a/yt_dlp/extractor/niconico.py
+++ b/yt_dlp/extractor/niconico.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 import functools
 import itertools
diff --git a/yt_dlp/extractor/ninecninemedia.py b/yt_dlp/extractor/ninecninemedia.py
index 781842721b..462caf4663 100644
--- a/yt_dlp/extractor/ninecninemedia.py
+++ b/yt_dlp/extractor/ninecninemedia.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/ninegag.py b/yt_dlp/extractor/ninegag.py
index 14390823bc..00ca95ea2e 100644
--- a/yt_dlp/extractor/ninegag.py
+++ b/yt_dlp/extractor/ninegag.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/ninenow.py b/yt_dlp/extractor/ninenow.py
index 6043674ba1..b970f8ccb5 100644
--- a/yt_dlp/extractor/ninenow.py
+++ b/yt_dlp/extractor/ninenow.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/nintendo.py b/yt_dlp/extractor/nintendo.py
index ff8f70ba66..ed839af25d 100644
--- a/yt_dlp/extractor/nintendo.py
+++ b/yt_dlp/extractor/nintendo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nitter.py b/yt_dlp/extractor/nitter.py
index 8bb709cd7e..251bf444fa 100644
--- a/yt_dlp/extractor/nitter.py
+++ b/yt_dlp/extractor/nitter.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/njpwworld.py b/yt_dlp/extractor/njpwworld.py
index 68c8c8e522..e761cf257c 100644
--- a/yt_dlp/extractor/njpwworld.py
+++ b/yt_dlp/extractor/njpwworld.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nobelprize.py b/yt_dlp/extractor/nobelprize.py
index 4dfdb09d62..35b64530f8 100644
--- a/yt_dlp/extractor/nobelprize.py
+++ b/yt_dlp/extractor/nobelprize.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     js_to_json,
diff --git a/yt_dlp/extractor/noco.py b/yt_dlp/extractor/noco.py
index 28af909d52..583d399cc7 100644
--- a/yt_dlp/extractor/noco.py
+++ b/yt_dlp/extractor/noco.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import time
 import hashlib
diff --git a/yt_dlp/extractor/nonktube.py b/yt_dlp/extractor/nonktube.py
index ca1424e06a..f191be33b7 100644
--- a/yt_dlp/extractor/nonktube.py
+++ b/yt_dlp/extractor/nonktube.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .nuevo import NuevoBaseIE
 
 
diff --git a/yt_dlp/extractor/noodlemagazine.py b/yt_dlp/extractor/noodlemagazine.py
index 2f170bbfe2..3e04da67e8 100644
--- a/yt_dlp/extractor/noodlemagazine.py
+++ b/yt_dlp/extractor/noodlemagazine.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/noovo.py b/yt_dlp/extractor/noovo.py
index b40770d07a..acbb74c6eb 100644
--- a/yt_dlp/extractor/noovo.py
+++ b/yt_dlp/extractor/noovo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .brightcove import BrightcoveNewIE
 from .common import InfoExtractor
 from ..compat import compat_str
diff --git a/yt_dlp/extractor/normalboots.py b/yt_dlp/extractor/normalboots.py
index 61fe571dfe..07babcd2c5 100644
--- a/yt_dlp/extractor/normalboots.py
+++ b/yt_dlp/extractor/normalboots.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .jwplatform import JWPlatformIE
 
diff --git a/yt_dlp/extractor/nosvideo.py b/yt_dlp/extractor/nosvideo.py
index 53c500c351..b6d3ea40c1 100644
--- a/yt_dlp/extractor/nosvideo.py
+++ b/yt_dlp/extractor/nosvideo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nova.py b/yt_dlp/extractor/nova.py
index 00a64f88d1..6875d26ba5 100644
--- a/yt_dlp/extractor/nova.py
+++ b/yt_dlp/extractor/nova.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/novaplay.py b/yt_dlp/extractor/novaplay.py
index bfb2c87511..4f1a846518 100644
--- a/yt_dlp/extractor/novaplay.py
+++ b/yt_dlp/extractor/novaplay.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import int_or_none, parse_duration, parse_iso8601
 
diff --git a/yt_dlp/extractor/nowness.py b/yt_dlp/extractor/nowness.py
index b2c715f413..fc9043bceb 100644
--- a/yt_dlp/extractor/nowness.py
+++ b/yt_dlp/extractor/nowness.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .brightcove import (
     BrightcoveLegacyIE,
     BrightcoveNewIE,
diff --git a/yt_dlp/extractor/noz.py b/yt_dlp/extractor/noz.py
index bdc2efcd7b..22cb08e8a2 100644
--- a/yt_dlp/extractor/noz.py
+++ b/yt_dlp/extractor/noz.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urllib_parse_unquote,
diff --git a/yt_dlp/extractor/npo.py b/yt_dlp/extractor/npo.py
index a8aaef6f16..0b5f32c2e8 100644
--- a/yt_dlp/extractor/npo.py
+++ b/yt_dlp/extractor/npo.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/npr.py b/yt_dlp/extractor/npr.py
index 49f062d7ab..6d93f154c0 100644
--- a/yt_dlp/extractor/npr.py
+++ b/yt_dlp/extractor/npr.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/nrk.py b/yt_dlp/extractor/nrk.py
index 0cf26d5981..553c551329 100644
--- a/yt_dlp/extractor/nrk.py
+++ b/yt_dlp/extractor/nrk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import random
 import re
diff --git a/yt_dlp/extractor/nrl.py b/yt_dlp/extractor/nrl.py
index 0bd5086ae2..798d03417b 100644
--- a/yt_dlp/extractor/nrl.py
+++ b/yt_dlp/extractor/nrl.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/ntvcojp.py b/yt_dlp/extractor/ntvcojp.py
index c9af91188b..422ec6eb02 100644
--- a/yt_dlp/extractor/ntvcojp.py
+++ b/yt_dlp/extractor/ntvcojp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/ntvde.py b/yt_dlp/extractor/ntvde.py
index 035582ee82..d252ced866 100644
--- a/yt_dlp/extractor/ntvde.py
+++ b/yt_dlp/extractor/ntvde.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ntvru.py b/yt_dlp/extractor/ntvru.py
index c47d1dfa4d..c8df110e80 100644
--- a/yt_dlp/extractor/ntvru.py
+++ b/yt_dlp/extractor/ntvru.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/nuevo.py b/yt_dlp/extractor/nuevo.py
index be1e09d375..ec54041f12 100644
--- a/yt_dlp/extractor/nuevo.py
+++ b/yt_dlp/extractor/nuevo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/nuvid.py b/yt_dlp/extractor/nuvid.py
index 84fb97d6a3..fafcc8f4b3 100644
--- a/yt_dlp/extractor/nuvid.py
+++ b/yt_dlp/extractor/nuvid.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/nytimes.py b/yt_dlp/extractor/nytimes.py
index 99964737d8..f388688c4c 100644
--- a/yt_dlp/extractor/nytimes.py
+++ b/yt_dlp/extractor/nytimes.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hmac
 import hashlib
 import base64
diff --git a/yt_dlp/extractor/nzherald.py b/yt_dlp/extractor/nzherald.py
index e5601b4953..7c9efd9226 100644
--- a/yt_dlp/extractor/nzherald.py
+++ b/yt_dlp/extractor/nzherald.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .brightcove import BrightcoveNewIE
 from .common import InfoExtractor
 
diff --git a/yt_dlp/extractor/nzz.py b/yt_dlp/extractor/nzz.py
index 61ee77adbd..ac3b73156e 100644
--- a/yt_dlp/extractor/nzz.py
+++ b/yt_dlp/extractor/nzz.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/odatv.py b/yt_dlp/extractor/odatv.py
index 314527f985..24ab939421 100644
--- a/yt_dlp/extractor/odatv.py
+++ b/yt_dlp/extractor/odatv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/odnoklassniki.py b/yt_dlp/extractor/odnoklassniki.py
index 293f1aa603..36a7f5f4e7 100644
--- a/yt_dlp/extractor/odnoklassniki.py
+++ b/yt_dlp/extractor/odnoklassniki.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/oktoberfesttv.py b/yt_dlp/extractor/oktoberfesttv.py
index 276567436b..e0ac8563a7 100644
--- a/yt_dlp/extractor/oktoberfesttv.py
+++ b/yt_dlp/extractor/oktoberfesttv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/olympics.py b/yt_dlp/extractor/olympics.py
index 784f282c7b..85f17a2f42 100644
--- a/yt_dlp/extractor/olympics.py
+++ b/yt_dlp/extractor/olympics.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/on24.py b/yt_dlp/extractor/on24.py
index d4d824430f..779becc700 100644
--- a/yt_dlp/extractor/on24.py
+++ b/yt_dlp/extractor/on24.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/once.py b/yt_dlp/extractor/once.py
index 3e44b78290..460b82d02f 100644
--- a/yt_dlp/extractor/once.py
+++ b/yt_dlp/extractor/once.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ondemandkorea.py b/yt_dlp/extractor/ondemandkorea.py
index e933ea2cc8..84687ef473 100644
--- a/yt_dlp/extractor/ondemandkorea.py
+++ b/yt_dlp/extractor/ondemandkorea.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/onefootball.py b/yt_dlp/extractor/onefootball.py
index 826faadd2e..41815bef1f 100644
--- a/yt_dlp/extractor/onefootball.py
+++ b/yt_dlp/extractor/onefootball.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/onet.py b/yt_dlp/extractor/onet.py
index 95177a2131..ea46d7def6 100644
--- a/yt_dlp/extractor/onet.py
+++ b/yt_dlp/extractor/onet.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/onionstudios.py b/yt_dlp/extractor/onionstudios.py
index cf5c39e66b..9776b4d975 100644
--- a/yt_dlp/extractor/onionstudios.py
+++ b/yt_dlp/extractor/onionstudios.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ooyala.py b/yt_dlp/extractor/ooyala.py
index 20cfa0a870..77017f08b9 100644
--- a/yt_dlp/extractor/ooyala.py
+++ b/yt_dlp/extractor/ooyala.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import base64
 import re
 
diff --git a/yt_dlp/extractor/opencast.py b/yt_dlp/extractor/opencast.py
index cf8d917176..c640224dd6 100644
--- a/yt_dlp/extractor/opencast.py
+++ b/yt_dlp/extractor/opencast.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/openload.py b/yt_dlp/extractor/openload.py
index c19d04900f..41ef2e892b 100644
--- a/yt_dlp/extractor/openload.py
+++ b/yt_dlp/extractor/openload.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import os
 import subprocess
@@ -50,7 +47,7 @@ def cookie_jar_to_list(cookie_jar):
     return [cookie_to_dict(cookie) for cookie in cookie_jar]
 
 
-class PhantomJSwrapper(object):
+class PhantomJSwrapper:
     """PhantomJS wrapper class
 
     This class is experimental.
@@ -136,7 +133,7 @@ class PhantomJSwrapper(object):
         for name in self._TMP_FILE_NAMES:
             try:
                 os.remove(self._TMP_FILES[name].name)
-            except (IOError, OSError, KeyError):
+            except (OSError, KeyError):
                 pass
 
     def _save_cookies(self, url):
@@ -217,9 +214,9 @@ class PhantomJSwrapper(object):
             f.write(self._TEMPLATE.format(**replaces).encode('utf-8'))
 
         if video_id is None:
-            self.extractor.to_screen('%s' % (note2,))
+            self.extractor.to_screen(f'{note2}')
         else:
-            self.extractor.to_screen('%s: %s' % (video_id, note2))
+            self.extractor.to_screen(f'{video_id}: {note2}')
 
         p = Popen(
             [self.exe, '--ssl-protocol=any', self._TMP_FILES['script'].name],
diff --git a/yt_dlp/extractor/openrec.py b/yt_dlp/extractor/openrec.py
index 5eb1cdbad5..7546c12fb4 100644
--- a/yt_dlp/extractor/openrec.py
+++ b/yt_dlp/extractor/openrec.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/ora.py b/yt_dlp/extractor/ora.py
index 422d0b3304..09b1214227 100644
--- a/yt_dlp/extractor/ora.py
+++ b/yt_dlp/extractor/ora.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 from .common import InfoExtractor
 from ..compat import compat_urlparse
diff --git a/yt_dlp/extractor/orf.py b/yt_dlp/extractor/orf.py
index 0628977a02..56309ffcbb 100644
--- a/yt_dlp/extractor/orf.py
+++ b/yt_dlp/extractor/orf.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/outsidetv.py b/yt_dlp/extractor/outsidetv.py
index c5333b08cb..b1fcbd6a77 100644
--- a/yt_dlp/extractor/outsidetv.py
+++ b/yt_dlp/extractor/outsidetv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/packtpub.py b/yt_dlp/extractor/packtpub.py
index 62c52cd6e4..51778d8a20 100644
--- a/yt_dlp/extractor/packtpub.py
+++ b/yt_dlp/extractor/packtpub.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/palcomp3.py b/yt_dlp/extractor/palcomp3.py
index d0a62fb17e..4b0801c1a0 100644
--- a/yt_dlp/extractor/palcomp3.py
+++ b/yt_dlp/extractor/palcomp3.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/pandoratv.py b/yt_dlp/extractor/pandoratv.py
index 623005338b..3747f31d2c 100644
--- a/yt_dlp/extractor/pandoratv.py
+++ b/yt_dlp/extractor/pandoratv.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/paramountplus.py b/yt_dlp/extractor/paramountplus.py
index 94a9319ea0..7987d77c6e 100644
--- a/yt_dlp/extractor/paramountplus.py
+++ b/yt_dlp/extractor/paramountplus.py
@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/parliamentliveuk.py b/yt_dlp/extractor/parliamentliveuk.py
index 974d65482f..38cb031645 100644
--- a/yt_dlp/extractor/parliamentliveuk.py
+++ b/yt_dlp/extractor/parliamentliveuk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import uuid
 
diff --git a/yt_dlp/extractor/parlview.py b/yt_dlp/extractor/parlview.py
index c85eaa7dcc..f31ae576cd 100644
--- a/yt_dlp/extractor/parlview.py
+++ b/yt_dlp/extractor/parlview.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/patreon.py b/yt_dlp/extractor/patreon.py
index 963a0d6fb9..cce9843d41 100644
--- a/yt_dlp/extractor/patreon.py
+++ b/yt_dlp/extractor/patreon.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pbs.py b/yt_dlp/extractor/pbs.py
index e48a2b8e08..4e6674e85e 100644
--- a/yt_dlp/extractor/pbs.py
+++ b/yt_dlp/extractor/pbs.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pearvideo.py b/yt_dlp/extractor/pearvideo.py
index 1d777221cc..d552e09666 100644
--- a/yt_dlp/extractor/pearvideo.py
+++ b/yt_dlp/extractor/pearvideo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/peekvids.py b/yt_dlp/extractor/peekvids.py
index 4bf68559a1..f1c4469d65 100644
--- a/yt_dlp/extractor/peekvids.py
+++ b/yt_dlp/extractor/peekvids.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/peertube.py b/yt_dlp/extractor/peertube.py
index 9d6b821784..0d3bc18a84 100644
--- a/yt_dlp/extractor/peertube.py
+++ b/yt_dlp/extractor/peertube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/peertv.py b/yt_dlp/extractor/peertv.py
index 002d33a880..821abe496e 100644
--- a/yt_dlp/extractor/peertv.py
+++ b/yt_dlp/extractor/peertv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import js_to_json
 
diff --git a/yt_dlp/extractor/peloton.py b/yt_dlp/extractor/peloton.py
index 7d832253fe..8e50ffc7f6 100644
--- a/yt_dlp/extractor/peloton.py
+++ b/yt_dlp/extractor/peloton.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/people.py b/yt_dlp/extractor/people.py
index 6ca95715ee..c5143c3edd 100644
--- a/yt_dlp/extractor/people.py
+++ b/yt_dlp/extractor/people.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/performgroup.py b/yt_dlp/extractor/performgroup.py
index c00d393754..824495f40d 100644
--- a/yt_dlp/extractor/performgroup.py
+++ b/yt_dlp/extractor/performgroup.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/periscope.py b/yt_dlp/extractor/periscope.py
index 1a292b8ac4..fc8591a2ce 100644
--- a/yt_dlp/extractor/periscope.py
+++ b/yt_dlp/extractor/periscope.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/philharmoniedeparis.py b/yt_dlp/extractor/philharmoniedeparis.py
index 9f4899c09c..22164caaac 100644
--- a/yt_dlp/extractor/philharmoniedeparis.py
+++ b/yt_dlp/extractor/philharmoniedeparis.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/phoenix.py b/yt_dlp/extractor/phoenix.py
index e3ea014436..5fa133afea 100644
--- a/yt_dlp/extractor/phoenix.py
+++ b/yt_dlp/extractor/phoenix.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .youtube import YoutubeIE
diff --git a/yt_dlp/extractor/photobucket.py b/yt_dlp/extractor/photobucket.py
index 53aebe2d92..71e9a4805b 100644
--- a/yt_dlp/extractor/photobucket.py
+++ b/yt_dlp/extractor/photobucket.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/piapro.py b/yt_dlp/extractor/piapro.py
index ae160623b8..d8d9c78010 100644
--- a/yt_dlp/extractor/piapro.py
+++ b/yt_dlp/extractor/piapro.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/picarto.py b/yt_dlp/extractor/picarto.py
index adf21fda87..54999a832c 100644
--- a/yt_dlp/extractor/picarto.py
+++ b/yt_dlp/extractor/picarto.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/piksel.py b/yt_dlp/extractor/piksel.py
index 84c3de2f0e..14a5408598 100644
--- a/yt_dlp/extractor/piksel.py
+++ b/yt_dlp/extractor/piksel.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pinkbike.py b/yt_dlp/extractor/pinkbike.py
index 9f3501f777..313b5cce0d 100644
--- a/yt_dlp/extractor/pinkbike.py
+++ b/yt_dlp/extractor/pinkbike.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pinterest.py b/yt_dlp/extractor/pinterest.py
index 80e9cd00ee..171f9e4eb0 100644
--- a/yt_dlp/extractor/pinterest.py
+++ b/yt_dlp/extractor/pinterest.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pixivsketch.py b/yt_dlp/extractor/pixivsketch.py
index f0ad0b24a1..bfdb8b24e8 100644
--- a/yt_dlp/extractor/pixivsketch.py
+++ b/yt_dlp/extractor/pixivsketch.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/pladform.py b/yt_dlp/extractor/pladform.py
index 99ade85ec8..301f5c8387 100644
--- a/yt_dlp/extractor/pladform.py
+++ b/yt_dlp/extractor/pladform.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/planetmarathi.py b/yt_dlp/extractor/planetmarathi.py
index 07ac15b540..03b9d6aaae 100644
--- a/yt_dlp/extractor/planetmarathi.py
+++ b/yt_dlp/extractor/planetmarathi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     try_get,
diff --git a/yt_dlp/extractor/platzi.py b/yt_dlp/extractor/platzi.py
index 17f52e7f41..29d3210ace 100644
--- a/yt_dlp/extractor/platzi.py
+++ b/yt_dlp/extractor/platzi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_b64decode,
diff --git a/yt_dlp/extractor/playfm.py b/yt_dlp/extractor/playfm.py
index 4298cbe308..e895ba480c 100644
--- a/yt_dlp/extractor/playfm.py
+++ b/yt_dlp/extractor/playfm.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/playplustv.py b/yt_dlp/extractor/playplustv.py
index cad2c3a0f4..05dbaf0661 100644
--- a/yt_dlp/extractor/playplustv.py
+++ b/yt_dlp/extractor/playplustv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/plays.py b/yt_dlp/extractor/plays.py
index ddfc6f1486..700dfe4077 100644
--- a/yt_dlp/extractor/plays.py
+++ b/yt_dlp/extractor/plays.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/playstuff.py b/yt_dlp/extractor/playstuff.py
index 5a329957f5..b424ba1872 100644
--- a/yt_dlp/extractor/playstuff.py
+++ b/yt_dlp/extractor/playstuff.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/playtvak.py b/yt_dlp/extractor/playtvak.py
index 30c8a599e7..f7e5ddbe77 100644
--- a/yt_dlp/extractor/playtvak.py
+++ b/yt_dlp/extractor/playtvak.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urlparse,
diff --git a/yt_dlp/extractor/playvid.py b/yt_dlp/extractor/playvid.py
index e1c406b6c2..5ffefc934d 100644
--- a/yt_dlp/extractor/playvid.py
+++ b/yt_dlp/extractor/playvid.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/playwire.py b/yt_dlp/extractor/playwire.py
index 9c9e597b5a..ab7f71493f 100644
--- a/yt_dlp/extractor/playwire.py
+++ b/yt_dlp/extractor/playwire.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     dict_get,
diff --git a/yt_dlp/extractor/pluralsight.py b/yt_dlp/extractor/pluralsight.py
index 2a5e0e4887..b50152ad8b 100644
--- a/yt_dlp/extractor/pluralsight.py
+++ b/yt_dlp/extractor/pluralsight.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import collections
 import json
 import os
diff --git a/yt_dlp/extractor/plutotv.py b/yt_dlp/extractor/plutotv.py
index 26aff1af5d..6e8f46fa32 100644
--- a/yt_dlp/extractor/plutotv.py
+++ b/yt_dlp/extractor/plutotv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import uuid
 
diff --git a/yt_dlp/extractor/podomatic.py b/yt_dlp/extractor/podomatic.py
index 673a3ab949..985bfae9dd 100644
--- a/yt_dlp/extractor/podomatic.py
+++ b/yt_dlp/extractor/podomatic.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pokemon.py b/yt_dlp/extractor/pokemon.py
index b411390e2d..eef0d02ca9 100644
--- a/yt_dlp/extractor/pokemon.py
+++ b/yt_dlp/extractor/pokemon.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pokergo.py b/yt_dlp/extractor/pokergo.py
index c9e2fed12b..5c7baadf24 100644
--- a/yt_dlp/extractor/pokergo.py
+++ b/yt_dlp/extractor/pokergo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/polsatgo.py b/yt_dlp/extractor/polsatgo.py
index 1e3f46c07c..e44d951e6e 100644
--- a/yt_dlp/extractor/polsatgo.py
+++ b/yt_dlp/extractor/polsatgo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from uuid import uuid4
 import json
 
diff --git a/yt_dlp/extractor/polskieradio.py b/yt_dlp/extractor/polskieradio.py
index b2b3eb29cf..514753b64d 100644
--- a/yt_dlp/extractor/polskieradio.py
+++ b/yt_dlp/extractor/polskieradio.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import json
 import math
diff --git a/yt_dlp/extractor/popcorntimes.py b/yt_dlp/extractor/popcorntimes.py
index 5f9d0e720b..ed741a07be 100644
--- a/yt_dlp/extractor/popcorntimes.py
+++ b/yt_dlp/extractor/popcorntimes.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import (
     compat_b64decode,
diff --git a/yt_dlp/extractor/popcorntv.py b/yt_dlp/extractor/popcorntv.py
index 66d2e50940..77984626f1 100644
--- a/yt_dlp/extractor/popcorntv.py
+++ b/yt_dlp/extractor/popcorntv.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     extract_attributes,
diff --git a/yt_dlp/extractor/porn91.py b/yt_dlp/extractor/porn91.py
index 20eac647a8..af4a0dc9c7 100644
--- a/yt_dlp/extractor/porn91.py
+++ b/yt_dlp/extractor/porn91.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/porncom.py b/yt_dlp/extractor/porncom.py
index 83df22141b..2ebd3fa096 100644
--- a/yt_dlp/extractor/porncom.py
+++ b/yt_dlp/extractor/porncom.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pornez.py b/yt_dlp/extractor/pornez.py
index 713dc00805..df0e44a699 100644
--- a/yt_dlp/extractor/pornez.py
+++ b/yt_dlp/extractor/pornez.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/pornflip.py b/yt_dlp/extractor/pornflip.py
index accf45269b..26536bc656 100644
--- a/yt_dlp/extractor/pornflip.py
+++ b/yt_dlp/extractor/pornflip.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/pornhd.py b/yt_dlp/extractor/pornhd.py
index 9dbd72f1d2..06a44ddd14 100644
--- a/yt_dlp/extractor/pornhd.py
+++ b/yt_dlp/extractor/pornhd.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/pornhub.py b/yt_dlp/extractor/pornhub.py
index 17c8c91007..d296ccacb9 100644
--- a/yt_dlp/extractor/pornhub.py
+++ b/yt_dlp/extractor/pornhub.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import itertools
 import math
diff --git a/yt_dlp/extractor/pornotube.py b/yt_dlp/extractor/pornotube.py
index 1b5b9a320d..e0960f4c6f 100644
--- a/yt_dlp/extractor/pornotube.py
+++ b/yt_dlp/extractor/pornotube.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/pornovoisines.py b/yt_dlp/extractor/pornovoisines.py
index 18459fc94e..96d2da7c75 100644
--- a/yt_dlp/extractor/pornovoisines.py
+++ b/yt_dlp/extractor/pornovoisines.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/pornoxo.py b/yt_dlp/extractor/pornoxo.py
index 489dc2b259..5104d8a49b 100644
--- a/yt_dlp/extractor/pornoxo.py
+++ b/yt_dlp/extractor/pornoxo.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     str_to_int,
diff --git a/yt_dlp/extractor/presstv.py b/yt_dlp/extractor/presstv.py
index bfb2eb71e3..26ce74a590 100644
--- a/yt_dlp/extractor/presstv.py
+++ b/yt_dlp/extractor/presstv.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import remove_start
 
diff --git a/yt_dlp/extractor/projectveritas.py b/yt_dlp/extractor/projectveritas.py
index 9e9867ba5d..e4aa4bd35c 100644
--- a/yt_dlp/extractor/projectveritas.py
+++ b/yt_dlp/extractor/projectveritas.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/prosiebensat1.py b/yt_dlp/extractor/prosiebensat1.py
index e89bbfd279..cb5ada1b9a 100644
--- a/yt_dlp/extractor/prosiebensat1.py
+++ b/yt_dlp/extractor/prosiebensat1.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from hashlib import sha1
diff --git a/yt_dlp/extractor/prx.py b/yt_dlp/extractor/prx.py
index 80561b80a2..5bb1832702 100644
--- a/yt_dlp/extractor/prx.py
+++ b/yt_dlp/extractor/prx.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 from .common import InfoExtractor, SearchInfoExtractor
 from ..utils import (
diff --git a/yt_dlp/extractor/puhutv.py b/yt_dlp/extractor/puhutv.py
index ca71665e0f..a5dac1dff5 100644
--- a/yt_dlp/extractor/puhutv.py
+++ b/yt_dlp/extractor/puhutv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_HTTPError,
diff --git a/yt_dlp/extractor/puls4.py b/yt_dlp/extractor/puls4.py
index 80091b85f8..3c13d1f564 100644
--- a/yt_dlp/extractor/puls4.py
+++ b/yt_dlp/extractor/puls4.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .prosiebensat1 import ProSiebenSat1BaseIE
 from ..utils import (
     unified_strdate,
diff --git a/yt_dlp/extractor/pyvideo.py b/yt_dlp/extractor/pyvideo.py
index 869619723d..7b25166b22 100644
--- a/yt_dlp/extractor/pyvideo.py
+++ b/yt_dlp/extractor/pyvideo.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/qqmusic.py b/yt_dlp/extractor/qqmusic.py
index 0106d166ff..fa2454df45 100644
--- a/yt_dlp/extractor/qqmusic.py
+++ b/yt_dlp/extractor/qqmusic.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 import re
 import time
diff --git a/yt_dlp/extractor/r7.py b/yt_dlp/extractor/r7.py
index e2202d6036..b459efceb5 100644
--- a/yt_dlp/extractor/r7.py
+++ b/yt_dlp/extractor/r7.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/radiko.py b/yt_dlp/extractor/radiko.py
index 1e60de1539..a0f5ebdd08 100644
--- a/yt_dlp/extractor/radiko.py
+++ b/yt_dlp/extractor/radiko.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import base64
 import calendar
diff --git a/yt_dlp/extractor/radiobremen.py b/yt_dlp/extractor/radiobremen.py
index 2c35f98451..99ba050d0f 100644
--- a/yt_dlp/extractor/radiobremen.py
+++ b/yt_dlp/extractor/radiobremen.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/radiocanada.py b/yt_dlp/extractor/radiocanada.py
index 4b4445c307..dd6f899a48 100644
--- a/yt_dlp/extractor/radiocanada.py
+++ b/yt_dlp/extractor/radiocanada.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_HTTPError
 from ..utils import (
diff --git a/yt_dlp/extractor/radiode.py b/yt_dlp/extractor/radiode.py
index 0382873637..befb0b72b4 100644
--- a/yt_dlp/extractor/radiode.py
+++ b/yt_dlp/extractor/radiode.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/radiofrance.py b/yt_dlp/extractor/radiofrance.py
index 082238bbc8..8fef54dabf 100644
--- a/yt_dlp/extractor/radiofrance.py
+++ b/yt_dlp/extractor/radiofrance.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/radiojavan.py b/yt_dlp/extractor/radiojavan.py
index 3f74f0c01f..6a61188991 100644
--- a/yt_dlp/extractor/radiojavan.py
+++ b/yt_dlp/extractor/radiojavan.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/radiokapital.py b/yt_dlp/extractor/radiokapital.py
index 2e93e034f7..8f9737ac31 100644
--- a/yt_dlp/extractor/radiokapital.py
+++ b/yt_dlp/extractor/radiokapital.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/radiozet.py b/yt_dlp/extractor/radiozet.py
index 2e1ff36c2f..67520172e8 100644
--- a/yt_dlp/extractor/radiozet.py
+++ b/yt_dlp/extractor/radiozet.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import (
     traverse_obj,
diff --git a/yt_dlp/extractor/rai.py b/yt_dlp/extractor/rai.py
index 7c72d60c62..31199e32e4 100644
--- a/yt_dlp/extractor/rai.py
+++ b/yt_dlp/extractor/rai.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/raywenderlich.py b/yt_dlp/extractor/raywenderlich.py
index f04d51f7b9..e0e3c3eadf 100644
--- a/yt_dlp/extractor/raywenderlich.py
+++ b/yt_dlp/extractor/raywenderlich.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rbmaradio.py b/yt_dlp/extractor/rbmaradio.py
index 9642fbbe1e..86c63dbb7f 100644
--- a/yt_dlp/extractor/rbmaradio.py
+++ b/yt_dlp/extractor/rbmaradio.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/rcs.py b/yt_dlp/extractor/rcs.py
index ace611bc92..abbc167c0f 100644
--- a/yt_dlp/extractor/rcs.py
+++ b/yt_dlp/extractor/rcs.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rcti.py b/yt_dlp/extractor/rcti.py
index ac42e58d9c..0cfecbc9a8 100644
--- a/yt_dlp/extractor/rcti.py
+++ b/yt_dlp/extractor/rcti.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import random
 import time
diff --git a/yt_dlp/extractor/rds.py b/yt_dlp/extractor/rds.py
index 0c497856ef..9a2e0d9851 100644
--- a/yt_dlp/extractor/rds.py
+++ b/yt_dlp/extractor/rds.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/redbulltv.py b/yt_dlp/extractor/redbulltv.py
index 756a3666b7..2f0e41c5b8 100644
--- a/yt_dlp/extractor/redbulltv.py
+++ b/yt_dlp/extractor/redbulltv.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_HTTPError
 from ..utils import (
diff --git a/yt_dlp/extractor/redgifs.py b/yt_dlp/extractor/redgifs.py
index 55196b768f..e3712a1d6b 100644
--- a/yt_dlp/extractor/redgifs.py
+++ b/yt_dlp/extractor/redgifs.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import functools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/redtube.py b/yt_dlp/extractor/redtube.py
index 7fee54fee4..ab7c505dab 100644
--- a/yt_dlp/extractor/redtube.py
+++ b/yt_dlp/extractor/redtube.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/regiotv.py b/yt_dlp/extractor/regiotv.py
index e250a52f06..6114841fb2 100644
--- a/yt_dlp/extractor/regiotv.py
+++ b/yt_dlp/extractor/regiotv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/rentv.py b/yt_dlp/extractor/rentv.py
index 7c8909d953..ab47ee5525 100644
--- a/yt_dlp/extractor/rentv.py
+++ b/yt_dlp/extractor/rentv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/restudy.py b/yt_dlp/extractor/restudy.py
index d47fb45ca5..cd3c20d7ae 100644
--- a/yt_dlp/extractor/restudy.py
+++ b/yt_dlp/extractor/restudy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/reuters.py b/yt_dlp/extractor/reuters.py
index 9dc482d216..1428b7cc95 100644
--- a/yt_dlp/extractor/reuters.py
+++ b/yt_dlp/extractor/reuters.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/reverbnation.py b/yt_dlp/extractor/reverbnation.py
index 4cb99c244c..06b6c3c2f6 100644
--- a/yt_dlp/extractor/reverbnation.py
+++ b/yt_dlp/extractor/reverbnation.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     qualities,
diff --git a/yt_dlp/extractor/rice.py b/yt_dlp/extractor/rice.py
index cf2bb1b51f..9ca47f3d43 100644
--- a/yt_dlp/extractor/rice.py
+++ b/yt_dlp/extractor/rice.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rmcdecouverte.py b/yt_dlp/extractor/rmcdecouverte.py
index 8bfce34169..8d29b302bb 100644
--- a/yt_dlp/extractor/rmcdecouverte.py
+++ b/yt_dlp/extractor/rmcdecouverte.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from .brightcove import BrightcoveLegacyIE
 from ..compat import (
diff --git a/yt_dlp/extractor/rockstargames.py b/yt_dlp/extractor/rockstargames.py
index cd6904bc93..5f1db0f057 100644
--- a/yt_dlp/extractor/rockstargames.py
+++ b/yt_dlp/extractor/rockstargames.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/rokfin.py b/yt_dlp/extractor/rokfin.py
index 0fd65db4b2..d7e8ba6207 100644
--- a/yt_dlp/extractor/rokfin.py
+++ b/yt_dlp/extractor/rokfin.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import itertools
 from datetime import datetime
 
diff --git a/yt_dlp/extractor/roosterteeth.py b/yt_dlp/extractor/roosterteeth.py
index a55dd4f8b9..011dadfaa2 100644
--- a/yt_dlp/extractor/roosterteeth.py
+++ b/yt_dlp/extractor/roosterteeth.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..compat import compat_HTTPError
 from ..utils import (
diff --git a/yt_dlp/extractor/rottentomatoes.py b/yt_dlp/extractor/rottentomatoes.py
index 14c8e82369..f133c851be 100644
--- a/yt_dlp/extractor/rottentomatoes.py
+++ b/yt_dlp/extractor/rottentomatoes.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .internetvideoarchive import InternetVideoArchiveIE
 
diff --git a/yt_dlp/extractor/rozhlas.py b/yt_dlp/extractor/rozhlas.py
index fccf69401d..a8189676f8 100644
--- a/yt_dlp/extractor/rozhlas.py
+++ b/yt_dlp/extractor/rozhlas.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/rtbf.py b/yt_dlp/extractor/rtbf.py
index 4b61fdb17e..a300a24824 100644
--- a/yt_dlp/extractor/rtbf.py
+++ b/yt_dlp/extractor/rtbf.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rte.py b/yt_dlp/extractor/rte.py
index 1fbc72915e..93faf1b324 100644
--- a/yt_dlp/extractor/rte.py
+++ b/yt_dlp/extractor/rte.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rtl2.py b/yt_dlp/extractor/rtl2.py
index e291714745..afa0d33cf5 100644
--- a/yt_dlp/extractor/rtl2.py
+++ b/yt_dlp/extractor/rtl2.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rtlnl.py b/yt_dlp/extractor/rtlnl.py
index 9eaa06f25d..ed89554ab0 100644
--- a/yt_dlp/extractor/rtlnl.py
+++ b/yt_dlp/extractor/rtlnl.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/rtnews.py b/yt_dlp/extractor/rtnews.py
index 68b6044b68..6be9945f70 100644
--- a/yt_dlp/extractor/rtnews.py
+++ b/yt_dlp/extractor/rtnews.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/rtp.py b/yt_dlp/extractor/rtp.py
index c165ade788..5928a207ae 100644
--- a/yt_dlp/extractor/rtp.py
+++ b/yt_dlp/extractor/rtp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import js_to_json
 import re
diff --git a/yt_dlp/extractor/rtrfm.py b/yt_dlp/extractor/rtrfm.py
index 93d51e8ed7..7381d82026 100644
--- a/yt_dlp/extractor/rtrfm.py
+++ b/yt_dlp/extractor/rtrfm.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/rts.py b/yt_dlp/extractor/rts.py
index 865a730243..e5ba1a26bd 100644
--- a/yt_dlp/extractor/rts.py
+++ b/yt_dlp/extractor/rts.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .srgssr import SRGSSRIE
diff --git a/yt_dlp/extractor/rtve.py b/yt_dlp/extractor/rtve.py
index 7a1dc6f326..e5837e8c87 100644
--- a/yt_dlp/extractor/rtve.py
+++ b/yt_dlp/extractor/rtve.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import io
 import sys
diff --git a/yt_dlp/extractor/rtvnh.py b/yt_dlp/extractor/rtvnh.py
index 6a00f70072..58af3dda2c 100644
--- a/yt_dlp/extractor/rtvnh.py
+++ b/yt_dlp/extractor/rtvnh.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError
 
diff --git a/yt_dlp/extractor/rtvs.py b/yt_dlp/extractor/rtvs.py
index 3ea0f1883c..fb06efa4b9 100644
--- a/yt_dlp/extractor/rtvs.py
+++ b/yt_dlp/extractor/rtvs.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ruhd.py b/yt_dlp/extractor/ruhd.py
index 3c8053a261..abaa3f9ea9 100644
--- a/yt_dlp/extractor/ruhd.py
+++ b/yt_dlp/extractor/ruhd.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/rule34video.py b/yt_dlp/extractor/rule34video.py
index a602a9f335..bb113d822d 100644
--- a/yt_dlp/extractor/rule34video.py
+++ b/yt_dlp/extractor/rule34video.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 import re
 
 from ..utils import parse_duration
diff --git a/yt_dlp/extractor/rumble.py b/yt_dlp/extractor/rumble.py
index a0d5f88d97..50c383d793 100644
--- a/yt_dlp/extractor/rumble.py
+++ b/yt_dlp/extractor/rumble.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/rutube.py b/yt_dlp/extractor/rutube.py
index 2f753b41f2..ecfcea9393 100644
--- a/yt_dlp/extractor/rutube.py
+++ b/yt_dlp/extractor/rutube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import itertools
 
diff --git a/yt_dlp/extractor/rutv.py b/yt_dlp/extractor/rutv.py
index 0ea8253fa9..adf78ddb09 100644
--- a/yt_dlp/extractor/rutv.py
+++ b/yt_dlp/extractor/rutv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ruutu.py b/yt_dlp/extractor/ruutu.py
index 5a30e33606..f5dadf2786 100644
--- a/yt_dlp/extractor/ruutu.py
+++ b/yt_dlp/extractor/ruutu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/ruv.py b/yt_dlp/extractor/ruv.py
index d806ed068d..12499d6ca8 100644
--- a/yt_dlp/extractor/ruv.py
+++ b/yt_dlp/extractor/ruv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/safari.py b/yt_dlp/extractor/safari.py
index 7b4571daa7..450a661e9f 100644
--- a/yt_dlp/extractor/safari.py
+++ b/yt_dlp/extractor/safari.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/saitosan.py b/yt_dlp/extractor/saitosan.py
index 621335ca06..d2f60e92ff 100644
--- a/yt_dlp/extractor/saitosan.py
+++ b/yt_dlp/extractor/saitosan.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError, try_get
 
diff --git a/yt_dlp/extractor/samplefocus.py b/yt_dlp/extractor/samplefocus.py
index 806c3c3542..e9f5c227b7 100644
--- a/yt_dlp/extractor/samplefocus.py
+++ b/yt_dlp/extractor/samplefocus.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sapo.py b/yt_dlp/extractor/sapo.py
index df202a3a40..9a601a01c3 100644
--- a/yt_dlp/extractor/sapo.py
+++ b/yt_dlp/extractor/sapo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/savefrom.py b/yt_dlp/extractor/savefrom.py
index 98efdc2a4f..9c9e74b6dd 100644
--- a/yt_dlp/extractor/savefrom.py
+++ b/yt_dlp/extractor/savefrom.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import os.path
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sbs.py b/yt_dlp/extractor/sbs.py
index 4090f6385d..711524406b 100644
--- a/yt_dlp/extractor/sbs.py
+++ b/yt_dlp/extractor/sbs.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     smuggle_url,
diff --git a/yt_dlp/extractor/screencast.py b/yt_dlp/extractor/screencast.py
index 69a0d01f39..e3dbaab690 100644
--- a/yt_dlp/extractor/screencast.py
+++ b/yt_dlp/extractor/screencast.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_parse_qs,
diff --git a/yt_dlp/extractor/screencastomatic.py b/yt_dlp/extractor/screencastomatic.py
index 0afdc17158..f2f281f479 100644
--- a/yt_dlp/extractor/screencastomatic.py
+++ b/yt_dlp/extractor/screencastomatic.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     get_element_by_class,
diff --git a/yt_dlp/extractor/scrippsnetworks.py b/yt_dlp/extractor/scrippsnetworks.py
index 84918b67f4..c3cee6e4aa 100644
--- a/yt_dlp/extractor/scrippsnetworks.py
+++ b/yt_dlp/extractor/scrippsnetworks.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import hashlib
 
diff --git a/yt_dlp/extractor/scte.py b/yt_dlp/extractor/scte.py
index 7215cf5d1c..d839ffcde8 100644
--- a/yt_dlp/extractor/scte.py
+++ b/yt_dlp/extractor/scte.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/seeker.py b/yt_dlp/extractor/seeker.py
index e5c18c7a55..65eb16a09d 100644
--- a/yt_dlp/extractor/seeker.py
+++ b/yt_dlp/extractor/seeker.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/senategov.py b/yt_dlp/extractor/senategov.py
index b295184a19..bced143288 100644
--- a/yt_dlp/extractor/senategov.py
+++ b/yt_dlp/extractor/senategov.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sendtonews.py b/yt_dlp/extractor/sendtonews.py
index 858547b54f..cf4b93d454 100644
--- a/yt_dlp/extractor/sendtonews.py
+++ b/yt_dlp/extractor/sendtonews.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/servus.py b/yt_dlp/extractor/servus.py
index 1610ddc2cd..ac030ea41b 100644
--- a/yt_dlp/extractor/servus.py
+++ b/yt_dlp/extractor/servus.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/sevenplus.py b/yt_dlp/extractor/sevenplus.py
index 9867961f07..8e95bc230d 100644
--- a/yt_dlp/extractor/sevenplus.py
+++ b/yt_dlp/extractor/sevenplus.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/sexu.py b/yt_dlp/extractor/sexu.py
index 3df51520b0..000f7e166a 100644
--- a/yt_dlp/extractor/sexu.py
+++ b/yt_dlp/extractor/sexu.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/seznamzpravy.py b/yt_dlp/extractor/seznamzpravy.py
index eef4975cba..891bfcfee6 100644
--- a/yt_dlp/extractor/seznamzpravy.py
+++ b/yt_dlp/extractor/seznamzpravy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/shahid.py b/yt_dlp/extractor/shahid.py
index ab45d9ce4f..53ca86b73e 100644
--- a/yt_dlp/extractor/shahid.py
+++ b/yt_dlp/extractor/shahid.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import math
 import re
diff --git a/yt_dlp/extractor/shared.py b/yt_dlp/extractor/shared.py
index 93ab2a1676..5bc097b0d8 100644
--- a/yt_dlp/extractor/shared.py
+++ b/yt_dlp/extractor/shared.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_b64decode,
diff --git a/yt_dlp/extractor/shemaroome.py b/yt_dlp/extractor/shemaroome.py
index 45c12915a3..c0780abe2e 100644
--- a/yt_dlp/extractor/shemaroome.py
+++ b/yt_dlp/extractor/shemaroome.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..aes import aes_cbc_decrypt, unpad_pkcs7
 from ..compat import (
diff --git a/yt_dlp/extractor/showroomlive.py b/yt_dlp/extractor/showroomlive.py
index 1aada69ac3..cd681a0351 100644
--- a/yt_dlp/extractor/showroomlive.py
+++ b/yt_dlp/extractor/showroomlive.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/simplecast.py b/yt_dlp/extractor/simplecast.py
index 857e9414fa..ecbb6123b8 100644
--- a/yt_dlp/extractor/simplecast.py
+++ b/yt_dlp/extractor/simplecast.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sina.py b/yt_dlp/extractor/sina.py
index b62b0c3e5b..d30d57d858 100644
--- a/yt_dlp/extractor/sina.py
+++ b/yt_dlp/extractor/sina.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     HEADRequest,
diff --git a/yt_dlp/extractor/sixplay.py b/yt_dlp/extractor/sixplay.py
index fd747f59b5..b7b7d7d7fd 100644
--- a/yt_dlp/extractor/sixplay.py
+++ b/yt_dlp/extractor/sixplay.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/skeb.py b/yt_dlp/extractor/skeb.py
index 81aecb3112..e02f8cef0e 100644
--- a/yt_dlp/extractor/skeb.py
+++ b/yt_dlp/extractor/skeb.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError, determine_ext, parse_qs, traverse_obj
 
diff --git a/yt_dlp/extractor/sky.py b/yt_dlp/extractor/sky.py
index ad1e62d88f..0a8b6cc769 100644
--- a/yt_dlp/extractor/sky.py
+++ b/yt_dlp/extractor/sky.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/skyit.py b/yt_dlp/extractor/skyit.py
index ddb43c075e..438fb60e3e 100644
--- a/yt_dlp/extractor/skyit.py
+++ b/yt_dlp/extractor/skyit.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_parse_qs,
diff --git a/yt_dlp/extractor/skylinewebcams.py b/yt_dlp/extractor/skylinewebcams.py
index 47bbb7632e..4292bb2ae5 100644
--- a/yt_dlp/extractor/skylinewebcams.py
+++ b/yt_dlp/extractor/skylinewebcams.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/skynewsarabia.py b/yt_dlp/extractor/skynewsarabia.py
index fffc9aa227..6264b04bb3 100644
--- a/yt_dlp/extractor/skynewsarabia.py
+++ b/yt_dlp/extractor/skynewsarabia.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/skynewsau.py b/yt_dlp/extractor/skynewsau.py
index 8e079ee312..43a9c82cf1 100644
--- a/yt_dlp/extractor/skynewsau.py
+++ b/yt_dlp/extractor/skynewsau.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     try_get,
diff --git a/yt_dlp/extractor/slideshare.py b/yt_dlp/extractor/slideshare.py
index 9b3ad0ad49..ab9dad0ec6 100644
--- a/yt_dlp/extractor/slideshare.py
+++ b/yt_dlp/extractor/slideshare.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/slideslive.py b/yt_dlp/extractor/slideslive.py
index df60846473..72ca560579 100644
--- a/yt_dlp/extractor/slideslive.py
+++ b/yt_dlp/extractor/slideslive.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     bool_or_none,
diff --git a/yt_dlp/extractor/slutload.py b/yt_dlp/extractor/slutload.py
index 661f9e59d0..8e6e89c9aa 100644
--- a/yt_dlp/extractor/slutload.py
+++ b/yt_dlp/extractor/slutload.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/snotr.py b/yt_dlp/extractor/snotr.py
index 0bb5482554..6889f1929d 100644
--- a/yt_dlp/extractor/snotr.py
+++ b/yt_dlp/extractor/snotr.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/sohu.py b/yt_dlp/extractor/sohu.py
index 3bff5c595e..c3a1359558 100644
--- a/yt_dlp/extractor/sohu.py
+++ b/yt_dlp/extractor/sohu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sonyliv.py b/yt_dlp/extractor/sonyliv.py
index 5b6849fc90..771f890cc9 100644
--- a/yt_dlp/extractor/sonyliv.py
+++ b/yt_dlp/extractor/sonyliv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 import math
 import random
diff --git a/yt_dlp/extractor/soundcloud.py b/yt_dlp/extractor/soundcloud.py
index 749e6dda39..6dfa50c602 100644
--- a/yt_dlp/extractor/soundcloud.py
+++ b/yt_dlp/extractor/soundcloud.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import re
 import json
diff --git a/yt_dlp/extractor/soundgasm.py b/yt_dlp/extractor/soundgasm.py
index d608eb7a76..9e59c7c0e5 100644
--- a/yt_dlp/extractor/soundgasm.py
+++ b/yt_dlp/extractor/soundgasm.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/southpark.py b/yt_dlp/extractor/southpark.py
index 942a52dcf5..855f1d6d3a 100644
--- a/yt_dlp/extractor/southpark.py
+++ b/yt_dlp/extractor/southpark.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .mtv import MTVServicesInfoExtractor
 
 
diff --git a/yt_dlp/extractor/sovietscloset.py b/yt_dlp/extractor/sovietscloset.py
index 4bc2263f0c..fc5a492a63 100644
--- a/yt_dlp/extractor/sovietscloset.py
+++ b/yt_dlp/extractor/sovietscloset.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     try_get,
diff --git a/yt_dlp/extractor/spankbang.py b/yt_dlp/extractor/spankbang.py
index dd849ae13e..1aa8eaba1d 100644
--- a/yt_dlp/extractor/spankbang.py
+++ b/yt_dlp/extractor/spankbang.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/spankwire.py b/yt_dlp/extractor/spankwire.py
index e97c1d23e1..603f17e9da 100644
--- a/yt_dlp/extractor/spankwire.py
+++ b/yt_dlp/extractor/spankwire.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/spiegel.py b/yt_dlp/extractor/spiegel.py
index 58f2ed3533..3701e295a9 100644
--- a/yt_dlp/extractor/spiegel.py
+++ b/yt_dlp/extractor/spiegel.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .jwplatform import JWPlatformIE
 
diff --git a/yt_dlp/extractor/spiegeltv.py b/yt_dlp/extractor/spiegeltv.py
index 6ccf4c3423..69942334e4 100644
--- a/yt_dlp/extractor/spiegeltv.py
+++ b/yt_dlp/extractor/spiegeltv.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .nexx import NexxIE
 
diff --git a/yt_dlp/extractor/spike.py b/yt_dlp/extractor/spike.py
index 5805f3d445..5c1c78d8fc 100644
--- a/yt_dlp/extractor/spike.py
+++ b/yt_dlp/extractor/spike.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .mtv import MTVServicesInfoExtractor
 
 
diff --git a/yt_dlp/extractor/sport5.py b/yt_dlp/extractor/sport5.py
index 35c57d62a7..f4ac98b6e0 100644
--- a/yt_dlp/extractor/sport5.py
+++ b/yt_dlp/extractor/sport5.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import ExtractorError
 
diff --git a/yt_dlp/extractor/sportbox.py b/yt_dlp/extractor/sportbox.py
index b9017fd2ab..1041cc7d18 100644
--- a/yt_dlp/extractor/sportbox.py
+++ b/yt_dlp/extractor/sportbox.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sportdeutschland.py b/yt_dlp/extractor/sportdeutschland.py
index 15b488ab7f..75074b3100 100644
--- a/yt_dlp/extractor/sportdeutschland.py
+++ b/yt_dlp/extractor/sportdeutschland.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/spotify.py b/yt_dlp/extractor/spotify.py
index 826f98cffc..3b8dea8f49 100644
--- a/yt_dlp/extractor/spotify.py
+++ b/yt_dlp/extractor/spotify.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/spreaker.py b/yt_dlp/extractor/spreaker.py
index 6c7e40ae4d..36a9bd2915 100644
--- a/yt_dlp/extractor/spreaker.py
+++ b/yt_dlp/extractor/spreaker.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/springboardplatform.py b/yt_dlp/extractor/springboardplatform.py
index 49ac1f559c..8e156bf1a1 100644
--- a/yt_dlp/extractor/springboardplatform.py
+++ b/yt_dlp/extractor/springboardplatform.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sprout.py b/yt_dlp/extractor/sprout.py
index e243732f24..444a6c270f 100644
--- a/yt_dlp/extractor/sprout.py
+++ b/yt_dlp/extractor/sprout.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .adobepass import AdobePassIE
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/srgssr.py b/yt_dlp/extractor/srgssr.py
index f9919816d4..6dd3129851 100644
--- a/yt_dlp/extractor/srgssr.py
+++ b/yt_dlp/extractor/srgssr.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/srmediathek.py b/yt_dlp/extractor/srmediathek.py
index 359dadaa3c..3cc39870f9 100644
--- a/yt_dlp/extractor/srmediathek.py
+++ b/yt_dlp/extractor/srmediathek.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .ard import ARDMediathekBaseIE
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/stanfordoc.py b/yt_dlp/extractor/stanfordoc.py
index 0003075aca..be0f4afc12 100644
--- a/yt_dlp/extractor/stanfordoc.py
+++ b/yt_dlp/extractor/stanfordoc.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/startv.py b/yt_dlp/extractor/startv.py
index 411320ede8..bb6e8f1ea5 100644
--- a/yt_dlp/extractor/startv.py
+++ b/yt_dlp/extractor/startv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/steam.py b/yt_dlp/extractor/steam.py
index 4ed0fb592a..ab22fdbc67 100644
--- a/yt_dlp/extractor/steam.py
+++ b/yt_dlp/extractor/steam.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/stitcher.py b/yt_dlp/extractor/stitcher.py
index 8227825070..2fd200f87a 100644
--- a/yt_dlp/extractor/stitcher.py
+++ b/yt_dlp/extractor/stitcher.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/storyfire.py b/yt_dlp/extractor/storyfire.py
index e18a59a49c..7161902201 100644
--- a/yt_dlp/extractor/storyfire.py
+++ b/yt_dlp/extractor/storyfire.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/streamable.py b/yt_dlp/extractor/streamable.py
index 808129649c..a2935b04bb 100644
--- a/yt_dlp/extractor/streamable.py
+++ b/yt_dlp/extractor/streamable.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/streamanity.py b/yt_dlp/extractor/streamanity.py
index 2e2d5eedf9..f8c37c0dd5 100644
--- a/yt_dlp/extractor/streamanity.py
+++ b/yt_dlp/extractor/streamanity.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/streamcloud.py b/yt_dlp/extractor/streamcloud.py
index b97bb43741..7289809210 100644
--- a/yt_dlp/extractor/streamcloud.py
+++ b/yt_dlp/extractor/streamcloud.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/streamcz.py b/yt_dlp/extractor/streamcz.py
index 4cb9923e2c..85fc3a3c32 100644
--- a/yt_dlp/extractor/streamcz.py
+++ b/yt_dlp/extractor/streamcz.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/streamff.py b/yt_dlp/extractor/streamff.py
index 6b190bb3b8..93c42942c3 100644
--- a/yt_dlp/extractor/streamff.py
+++ b/yt_dlp/extractor/streamff.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 from ..utils import int_or_none, parse_iso8601
 
diff --git a/yt_dlp/extractor/streetvoice.py b/yt_dlp/extractor/streetvoice.py
index f21681ae78..a32c8bc378 100644
--- a/yt_dlp/extractor/streetvoice.py
+++ b/yt_dlp/extractor/streetvoice.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/stretchinternet.py b/yt_dlp/extractor/stretchinternet.py
index ec08eae551..e438dee111 100644
--- a/yt_dlp/extractor/stretchinternet.py
+++ b/yt_dlp/extractor/stretchinternet.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/stripchat.py b/yt_dlp/extractor/stripchat.py
index 0d4a0ce4c0..a7c7b06496 100644
--- a/yt_dlp/extractor/stripchat.py
+++ b/yt_dlp/extractor/stripchat.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/stv.py b/yt_dlp/extractor/stv.py
index ba5661d747..618dc4329a 100644
--- a/yt_dlp/extractor/stv.py
+++ b/yt_dlp/extractor/stv.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     compat_str,
diff --git a/yt_dlp/extractor/sunporno.py b/yt_dlp/extractor/sunporno.py
index 59b77bf92f..19498701c6 100644
--- a/yt_dlp/extractor/sunporno.py
+++ b/yt_dlp/extractor/sunporno.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/sverigesradio.py b/yt_dlp/extractor/sverigesradio.py
index aa0691f0df..4a4b5cf7ef 100644
--- a/yt_dlp/extractor/sverigesradio.py
+++ b/yt_dlp/extractor/sverigesradio.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/svt.py b/yt_dlp/extractor/svt.py
index 8ca62e370c..e0c436b67a 100644
--- a/yt_dlp/extractor/svt.py
+++ b/yt_dlp/extractor/svt.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/swrmediathek.py b/yt_dlp/extractor/swrmediathek.py
index 0f615979e1..deebdd1a4a 100644
--- a/yt_dlp/extractor/swrmediathek.py
+++ b/yt_dlp/extractor/swrmediathek.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/syfy.py b/yt_dlp/extractor/syfy.py
index def7e5a2c7..c79d27a0de 100644
--- a/yt_dlp/extractor/syfy.py
+++ b/yt_dlp/extractor/syfy.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .adobepass import AdobePassIE
 from ..utils import (
     update_url_query,
diff --git a/yt_dlp/extractor/sztvhu.py b/yt_dlp/extractor/sztvhu.py
index cfad331464..1cbc2a3cf5 100644
--- a/yt_dlp/extractor/sztvhu.py
+++ b/yt_dlp/extractor/sztvhu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/tagesschau.py b/yt_dlp/extractor/tagesschau.py
index 6e03d0a7d1..9b9513f075 100644
--- a/yt_dlp/extractor/tagesschau.py
+++ b/yt_dlp/extractor/tagesschau.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tass.py b/yt_dlp/extractor/tass.py
index 6d336da788..d20dacfc1f 100644
--- a/yt_dlp/extractor/tass.py
+++ b/yt_dlp/extractor/tass.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tastytrade.py b/yt_dlp/extractor/tastytrade.py
index 7fe96bd5fc..bb26926e88 100644
--- a/yt_dlp/extractor/tastytrade.py
+++ b/yt_dlp/extractor/tastytrade.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .ooyala import OoyalaIE
 
diff --git a/yt_dlp/extractor/tbs.py b/yt_dlp/extractor/tbs.py
index c7d62ff4e4..808c6c73d3 100644
--- a/yt_dlp/extractor/tbs.py
+++ b/yt_dlp/extractor/tbs.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .turner import TurnerBaseIE
diff --git a/yt_dlp/extractor/tdslifeway.py b/yt_dlp/extractor/tdslifeway.py
index 101c6ee31a..3623a68c8c 100644
--- a/yt_dlp/extractor/tdslifeway.py
+++ b/yt_dlp/extractor/tdslifeway.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/teachable.py b/yt_dlp/extractor/teachable.py
index 232eaa5216..e480d76101 100644
--- a/yt_dlp/extractor/teachable.py
+++ b/yt_dlp/extractor/teachable.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/teachertube.py b/yt_dlp/extractor/teachertube.py
index e22f0114cf..2bf836abd7 100644
--- a/yt_dlp/extractor/teachertube.py
+++ b/yt_dlp/extractor/teachertube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/teachingchannel.py b/yt_dlp/extractor/teachingchannel.py
index 624cdb3adc..275f6d1f92 100644
--- a/yt_dlp/extractor/teachingchannel.py
+++ b/yt_dlp/extractor/teachingchannel.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/teamcoco.py b/yt_dlp/extractor/teamcoco.py
index 5793b711f6..840702ed9e 100644
--- a/yt_dlp/extractor/teamcoco.py
+++ b/yt_dlp/extractor/teamcoco.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .turner import TurnerBaseIE
diff --git a/yt_dlp/extractor/teamtreehouse.py b/yt_dlp/extractor/teamtreehouse.py
index 64522ec4cc..dd802db5b7 100644
--- a/yt_dlp/extractor/teamtreehouse.py
+++ b/yt_dlp/extractor/teamtreehouse.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/techtalks.py b/yt_dlp/extractor/techtalks.py
index 78f07319b6..d37de360b8 100644
--- a/yt_dlp/extractor/techtalks.py
+++ b/yt_dlp/extractor/techtalks.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tele13.py b/yt_dlp/extractor/tele13.py
index f8a27550e3..8e35bc85fe 100644
--- a/yt_dlp/extractor/tele13.py
+++ b/yt_dlp/extractor/tele13.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .youtube import YoutubeIE
 from ..utils import (
diff --git a/yt_dlp/extractor/tele5.py b/yt_dlp/extractor/tele5.py
index c7beee1535..58d343b449 100644
--- a/yt_dlp/extractor/tele5.py
+++ b/yt_dlp/extractor/tele5.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .dplay import DPlayIE
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/telebruxelles.py b/yt_dlp/extractor/telebruxelles.py
index 9e8c89bd63..8d87b6ec1f 100644
--- a/yt_dlp/extractor/telebruxelles.py
+++ b/yt_dlp/extractor/telebruxelles.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/telecinco.py b/yt_dlp/extractor/telecinco.py
index eecd6a5c9b..a9c0755f48 100644
--- a/yt_dlp/extractor/telecinco.py
+++ b/yt_dlp/extractor/telecinco.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/telegraaf.py b/yt_dlp/extractor/telegraaf.py
index 2dc0205373..bc9a8d6084 100644
--- a/yt_dlp/extractor/telegraaf.py
+++ b/yt_dlp/extractor/telegraaf.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/telemb.py b/yt_dlp/extractor/telemb.py
index ac2d603b6b..7e444c0d09 100644
--- a/yt_dlp/extractor/telemb.py
+++ b/yt_dlp/extractor/telemb.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/telemundo.py b/yt_dlp/extractor/telemundo.py
index ebcecf55f8..64954b8f1b 100644
--- a/yt_dlp/extractor/telemundo.py
+++ b/yt_dlp/extractor/telemundo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     try_get,
diff --git a/yt_dlp/extractor/telequebec.py b/yt_dlp/extractor/telequebec.py
index 4bef2fe764..e89137269a 100644
--- a/yt_dlp/extractor/telequebec.py
+++ b/yt_dlp/extractor/telequebec.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/teletask.py b/yt_dlp/extractor/teletask.py
index b9e2ef8cab..a73dd68fba 100644
--- a/yt_dlp/extractor/teletask.py
+++ b/yt_dlp/extractor/teletask.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/telewebion.py b/yt_dlp/extractor/telewebion.py
index 1207b1a1b8..550549f056 100644
--- a/yt_dlp/extractor/telewebion.py
+++ b/yt_dlp/extractor/telewebion.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/tennistv.py b/yt_dlp/extractor/tennistv.py
index 58fdecebee..80acaf1906 100644
--- a/yt_dlp/extractor/tennistv.py
+++ b/yt_dlp/extractor/tennistv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tenplay.py b/yt_dlp/extractor/tenplay.py
index 5c7b54531c..fc47814473 100644
--- a/yt_dlp/extractor/tenplay.py
+++ b/yt_dlp/extractor/tenplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from datetime import datetime
 import base64
 
diff --git a/yt_dlp/extractor/testurl.py b/yt_dlp/extractor/testurl.py
index 8bc512a9c1..140fa4a963 100644
--- a/yt_dlp/extractor/testurl.py
+++ b/yt_dlp/extractor/testurl.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tf1.py b/yt_dlp/extractor/tf1.py
index 44785bc657..4cf0322b35 100644
--- a/yt_dlp/extractor/tf1.py
+++ b/yt_dlp/extractor/tf1.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tfo.py b/yt_dlp/extractor/tfo.py
index 0631cb7aba..a24789cb37 100644
--- a/yt_dlp/extractor/tfo.py
+++ b/yt_dlp/extractor/tfo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/theintercept.py b/yt_dlp/extractor/theintercept.py
index f23b587137..a991a4dfd0 100644
--- a/yt_dlp/extractor/theintercept.py
+++ b/yt_dlp/extractor/theintercept.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/theplatform.py b/yt_dlp/extractor/theplatform.py
index c2729f12d7..bf7efc0134 100644
--- a/yt_dlp/extractor/theplatform.py
+++ b/yt_dlp/extractor/theplatform.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import time
 import hmac
diff --git a/yt_dlp/extractor/thestar.py b/yt_dlp/extractor/thestar.py
index c3f1188947..293c34c06e 100644
--- a/yt_dlp/extractor/thestar.py
+++ b/yt_dlp/extractor/thestar.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/thesun.py b/yt_dlp/extractor/thesun.py
index 15d4a69327..ba58482836 100644
--- a/yt_dlp/extractor/thesun.py
+++ b/yt_dlp/extractor/thesun.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/theta.py b/yt_dlp/extractor/theta.py
index 8b6d70a9f6..3ec6b97118 100644
--- a/yt_dlp/extractor/theta.py
+++ b/yt_dlp/extractor/theta.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import try_get
 
diff --git a/yt_dlp/extractor/theweatherchannel.py b/yt_dlp/extractor/theweatherchannel.py
index 9e506c9e02..9e94cd1ea1 100644
--- a/yt_dlp/extractor/theweatherchannel.py
+++ b/yt_dlp/extractor/theweatherchannel.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .theplatform import ThePlatformIE
diff --git a/yt_dlp/extractor/thisamericanlife.py b/yt_dlp/extractor/thisamericanlife.py
index 91e45f2c3d..9a3d79840a 100644
--- a/yt_dlp/extractor/thisamericanlife.py
+++ b/yt_dlp/extractor/thisamericanlife.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/thisav.py b/yt_dlp/extractor/thisav.py
index 6bb00b3aba..b1cd57d1f1 100644
--- a/yt_dlp/extractor/thisav.py
+++ b/yt_dlp/extractor/thisav.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import remove_end
 
diff --git a/yt_dlp/extractor/thisoldhouse.py b/yt_dlp/extractor/thisoldhouse.py
index 8a1d173116..55b6413ae6 100644
--- a/yt_dlp/extractor/thisoldhouse.py
+++ b/yt_dlp/extractor/thisoldhouse.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import HEADRequest
 
diff --git a/yt_dlp/extractor/threeqsdn.py b/yt_dlp/extractor/threeqsdn.py
index 00a51dccda..1c0baf5ed4 100644
--- a/yt_dlp/extractor/threeqsdn.py
+++ b/yt_dlp/extractor/threeqsdn.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/threespeak.py b/yt_dlp/extractor/threespeak.py
index fe6a9554a9..ce28a37c07 100644
--- a/yt_dlp/extractor/threespeak.py
+++ b/yt_dlp/extractor/threespeak.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tiktok.py b/yt_dlp/extractor/tiktok.py
index 987b0c43b5..4ba9935820 100644
--- a/yt_dlp/extractor/tiktok.py
+++ b/yt_dlp/extractor/tiktok.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import random
 import string
diff --git a/yt_dlp/extractor/tinypic.py b/yt_dlp/extractor/tinypic.py
index 39056e52e6..216208cbdc 100644
--- a/yt_dlp/extractor/tinypic.py
+++ b/yt_dlp/extractor/tinypic.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tmz.py b/yt_dlp/extractor/tmz.py
index aee2273b82..a8c91f617c 100644
--- a/yt_dlp/extractor/tmz.py
+++ b/yt_dlp/extractor/tmz.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tnaflix.py b/yt_dlp/extractor/tnaflix.py
index d7617f7084..6b766f3cc6 100644
--- a/yt_dlp/extractor/tnaflix.py
+++ b/yt_dlp/extractor/tnaflix.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/toggle.py b/yt_dlp/extractor/toggle.py
index eb873495fc..51a51d84b9 100644
--- a/yt_dlp/extractor/toggle.py
+++ b/yt_dlp/extractor/toggle.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/tokentube.py b/yt_dlp/extractor/tokentube.py
index 579623fed4..a30cabb3ce 100644
--- a/yt_dlp/extractor/tokentube.py
+++ b/yt_dlp/extractor/tokentube.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import re
 
diff --git a/yt_dlp/extractor/tonline.py b/yt_dlp/extractor/tonline.py
index 9b6a40db51..7202826636 100644
--- a/yt_dlp/extractor/tonline.py
+++ b/yt_dlp/extractor/tonline.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none, join_nonempty
 
diff --git a/yt_dlp/extractor/toongoggles.py b/yt_dlp/extractor/toongoggles.py
index df13d64c0b..1b8fc3acdb 100644
--- a/yt_dlp/extractor/toongoggles.py
+++ b/yt_dlp/extractor/toongoggles.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/toutv.py b/yt_dlp/extractor/toutv.py
index 1d5da10400..349c0bded9 100644
--- a/yt_dlp/extractor/toutv.py
+++ b/yt_dlp/extractor/toutv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .radiocanada import RadioCanadaIE
diff --git a/yt_dlp/extractor/toypics.py b/yt_dlp/extractor/toypics.py
index f705a06c95..bc73361861 100644
--- a/yt_dlp/extractor/toypics.py
+++ b/yt_dlp/extractor/toypics.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 import re
 
diff --git a/yt_dlp/extractor/traileraddict.py b/yt_dlp/extractor/traileraddict.py
index 514f4793e6..5c4a138c47 100644
--- a/yt_dlp/extractor/traileraddict.py
+++ b/yt_dlp/extractor/traileraddict.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/trilulilu.py b/yt_dlp/extractor/trilulilu.py
index a800449e94..fb97be7373 100644
--- a/yt_dlp/extractor/trilulilu.py
+++ b/yt_dlp/extractor/trilulilu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/trovo.py b/yt_dlp/extractor/trovo.py
index 65ea13ddb2..3487f3acce 100644
--- a/yt_dlp/extractor/trovo.py
+++ b/yt_dlp/extractor/trovo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import json
 
diff --git a/yt_dlp/extractor/trueid.py b/yt_dlp/extractor/trueid.py
index fc98303abd..696343627b 100644
--- a/yt_dlp/extractor/trueid.py
+++ b/yt_dlp/extractor/trueid.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_HTTPError
 from ..utils import (
diff --git a/yt_dlp/extractor/trunews.py b/yt_dlp/extractor/trunews.py
index cca5b5cebd..d5ce86ece6 100644
--- a/yt_dlp/extractor/trunews.py
+++ b/yt_dlp/extractor/trunews.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/trutv.py b/yt_dlp/extractor/trutv.py
index c09ff897c1..ea0f2f40e0 100644
--- a/yt_dlp/extractor/trutv.py
+++ b/yt_dlp/extractor/trutv.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .turner import TurnerBaseIE
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/tube8.py b/yt_dlp/extractor/tube8.py
index db93b01825..32e80d9d2a 100644
--- a/yt_dlp/extractor/tube8.py
+++ b/yt_dlp/extractor/tube8.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from ..utils import (
diff --git a/yt_dlp/extractor/tubitv.py b/yt_dlp/extractor/tubitv.py
index 31feb9a701..9c8e1ac879 100644
--- a/yt_dlp/extractor/tubitv.py
+++ b/yt_dlp/extractor/tubitv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tudou.py b/yt_dlp/extractor/tudou.py
index 7421378a8c..69774ee384 100644
--- a/yt_dlp/extractor/tudou.py
+++ b/yt_dlp/extractor/tudou.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/tumblr.py b/yt_dlp/extractor/tumblr.py
index 8086f613df..5d66151002 100644
--- a/yt_dlp/extractor/tumblr.py
+++ b/yt_dlp/extractor/tumblr.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/tunein.py b/yt_dlp/extractor/tunein.py
index 7e51de89ed..e3d3f2a96b 100644
--- a/yt_dlp/extractor/tunein.py
+++ b/yt_dlp/extractor/tunein.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tunepk.py b/yt_dlp/extractor/tunepk.py
index 9d42651ce0..2973d15ec5 100644
--- a/yt_dlp/extractor/tunepk.py
+++ b/yt_dlp/extractor/tunepk.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/turbo.py b/yt_dlp/extractor/turbo.py
index f6bbf2529e..e3f8941c44 100644
--- a/yt_dlp/extractor/turbo.py
+++ b/yt_dlp/extractor/turbo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/turner.py b/yt_dlp/extractor/turner.py
index 519dc323cd..568b6de495 100644
--- a/yt_dlp/extractor/turner.py
+++ b/yt_dlp/extractor/turner.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .adobepass import AdobePassIE
diff --git a/yt_dlp/extractor/tv2.py b/yt_dlp/extractor/tv2.py
index 977da30fee..391baa6c5e 100644
--- a/yt_dlp/extractor/tv2.py
+++ b/yt_dlp/extractor/tv2.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tv2dk.py b/yt_dlp/extractor/tv2dk.py
index ec5cbdf035..0af2863126 100644
--- a/yt_dlp/extractor/tv2dk.py
+++ b/yt_dlp/extractor/tv2dk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/tv2hu.py b/yt_dlp/extractor/tv2hu.py
index f2104358bb..6ac07716ba 100644
--- a/yt_dlp/extractor/tv2hu.py
+++ b/yt_dlp/extractor/tv2hu.py
@@ -1,6 +1,4 @@
 # encoding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     traverse_obj,
diff --git a/yt_dlp/extractor/tv4.py b/yt_dlp/extractor/tv4.py
index 4043e63662..e8cdd5c8cb 100644
--- a/yt_dlp/extractor/tv4.py
+++ b/yt_dlp/extractor/tv4.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tv5mondeplus.py b/yt_dlp/extractor/tv5mondeplus.py
index a0832d28f4..d449cdc042 100644
--- a/yt_dlp/extractor/tv5mondeplus.py
+++ b/yt_dlp/extractor/tv5mondeplus.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/tv5unis.py b/yt_dlp/extractor/tv5unis.py
index 398b85db56..978255b177 100644
--- a/yt_dlp/extractor/tv5unis.py
+++ b/yt_dlp/extractor/tv5unis.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/tva.py b/yt_dlp/extractor/tva.py
index 52a4ddf32f..9afe233284 100644
--- a/yt_dlp/extractor/tva.py
+++ b/yt_dlp/extractor/tva.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/tvanouvelles.py b/yt_dlp/extractor/tvanouvelles.py
index 1086176a2e..b9f5e110eb 100644
--- a/yt_dlp/extractor/tvanouvelles.py
+++ b/yt_dlp/extractor/tvanouvelles.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tvc.py b/yt_dlp/extractor/tvc.py
index 008f64cc2e..4ccc8f5227 100644
--- a/yt_dlp/extractor/tvc.py
+++ b/yt_dlp/extractor/tvc.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tver.py b/yt_dlp/extractor/tver.py
index f23af1f142..19236f8e82 100644
--- a/yt_dlp/extractor/tver.py
+++ b/yt_dlp/extractor/tver.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/tvigle.py b/yt_dlp/extractor/tvigle.py
index aa25ba0dc1..cc1d35dc23 100644
--- a/yt_dlp/extractor/tvigle.py
+++ b/yt_dlp/extractor/tvigle.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/tvland.py b/yt_dlp/extractor/tvland.py
index 9ebf57f740..481d5eb19e 100644
--- a/yt_dlp/extractor/tvland.py
+++ b/yt_dlp/extractor/tvland.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .mtv import MTVServicesInfoExtractor
 
 # TODO: Remove - Reason not used anymore - Service moved to youtube
diff --git a/yt_dlp/extractor/tvn24.py b/yt_dlp/extractor/tvn24.py
index de0fb50631..22b6058231 100644
--- a/yt_dlp/extractor/tvn24.py
+++ b/yt_dlp/extractor/tvn24.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/tvnet.py b/yt_dlp/extractor/tvnet.py
index aa1e9d9234..5820bb4a7b 100644
--- a/yt_dlp/extractor/tvnet.py
+++ b/yt_dlp/extractor/tvnet.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tvnoe.py b/yt_dlp/extractor/tvnoe.py
index 26a5aeae43..712fbb2754 100644
--- a/yt_dlp/extractor/tvnoe.py
+++ b/yt_dlp/extractor/tvnoe.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/tvnow.py b/yt_dlp/extractor/tvnow.py
index b31818477e..4aa558d839 100644
--- a/yt_dlp/extractor/tvnow.py
+++ b/yt_dlp/extractor/tvnow.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tvopengr.py b/yt_dlp/extractor/tvopengr.py
index a11cdc6b08..aded261f36 100644
--- a/yt_dlp/extractor/tvopengr.py
+++ b/yt_dlp/extractor/tvopengr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tvp.py b/yt_dlp/extractor/tvp.py
index 48e2c6e764..69168f6558 100644
--- a/yt_dlp/extractor/tvp.py
+++ b/yt_dlp/extractor/tvp.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import random
 import re
diff --git a/yt_dlp/extractor/tvplay.py b/yt_dlp/extractor/tvplay.py
index b5dbc55262..f815b51379 100644
--- a/yt_dlp/extractor/tvplay.py
+++ b/yt_dlp/extractor/tvplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/tvplayer.py b/yt_dlp/extractor/tvplayer.py
index 5970596b21..31d70b6b83 100644
--- a/yt_dlp/extractor/tvplayer.py
+++ b/yt_dlp/extractor/tvplayer.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_HTTPError,
diff --git a/yt_dlp/extractor/tweakers.py b/yt_dlp/extractor/tweakers.py
index 2b10d9bcae..6d1f92bbb4 100644
--- a/yt_dlp/extractor/tweakers.py
+++ b/yt_dlp/extractor/tweakers.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/twentyfourvideo.py b/yt_dlp/extractor/twentyfourvideo.py
index ae19e11e1e..baeb85d473 100644
--- a/yt_dlp/extractor/twentyfourvideo.py
+++ b/yt_dlp/extractor/twentyfourvideo.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     parse_iso8601,
diff --git a/yt_dlp/extractor/twentymin.py b/yt_dlp/extractor/twentymin.py
index a42977f397..616c3c36ed 100644
--- a/yt_dlp/extractor/twentymin.py
+++ b/yt_dlp/extractor/twentymin.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/twentythreevideo.py b/yt_dlp/extractor/twentythreevideo.py
index e8cf5a1e96..290c3761e2 100644
--- a/yt_dlp/extractor/twentythreevideo.py
+++ b/yt_dlp/extractor/twentythreevideo.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/twitcasting.py b/yt_dlp/extractor/twitcasting.py
index 7f3fa07352..3d6a122655 100644
--- a/yt_dlp/extractor/twitcasting.py
+++ b/yt_dlp/extractor/twitcasting.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/twitch.py b/yt_dlp/extractor/twitch.py
index 10de74c8e4..834350d12a 100644
--- a/yt_dlp/extractor/twitch.py
+++ b/yt_dlp/extractor/twitch.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import collections
 import itertools
 import json
diff --git a/yt_dlp/extractor/twitter.py b/yt_dlp/extractor/twitter.py
index 8ccc38e242..af67503330 100644
--- a/yt_dlp/extractor/twitter.py
+++ b/yt_dlp/extractor/twitter.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/udemy.py b/yt_dlp/extractor/udemy.py
index 77485247fd..d35cd0d431 100644
--- a/yt_dlp/extractor/udemy.py
+++ b/yt_dlp/extractor/udemy.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/udn.py b/yt_dlp/extractor/udn.py
index 2c8e5c7b41..4fa74b9e84 100644
--- a/yt_dlp/extractor/udn.py
+++ b/yt_dlp/extractor/udn.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/ufctv.py b/yt_dlp/extractor/ufctv.py
index 3d74ba0714..2c1c5e0ff1 100644
--- a/yt_dlp/extractor/ufctv.py
+++ b/yt_dlp/extractor/ufctv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .imggaming import ImgGamingBaseIE
 
 
diff --git a/yt_dlp/extractor/ukcolumn.py b/yt_dlp/extractor/ukcolumn.py
index d2626f0d3b..aade79f20e 100644
--- a/yt_dlp/extractor/ukcolumn.py
+++ b/yt_dlp/extractor/ukcolumn.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from ..utils import (
     unescapeHTML,
     urljoin,
diff --git a/yt_dlp/extractor/uktvplay.py b/yt_dlp/extractor/uktvplay.py
index f28fd514db..abea07ab56 100644
--- a/yt_dlp/extractor/uktvplay.py
+++ b/yt_dlp/extractor/uktvplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/umg.py b/yt_dlp/extractor/umg.py
index c1b65d1897..e6ed656b92 100644
--- a/yt_dlp/extractor/umg.py
+++ b/yt_dlp/extractor/umg.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/unistra.py b/yt_dlp/extractor/unistra.py
index 685d74f358..083c87209e 100644
--- a/yt_dlp/extractor/unistra.py
+++ b/yt_dlp/extractor/unistra.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/unity.py b/yt_dlp/extractor/unity.py
index 73daacf29f..d1b0ecbf38 100644
--- a/yt_dlp/extractor/unity.py
+++ b/yt_dlp/extractor/unity.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .youtube import YoutubeIE
 
diff --git a/yt_dlp/extractor/uol.py b/yt_dlp/extractor/uol.py
index 1baee0b10c..e3d9127d8e 100644
--- a/yt_dlp/extractor/uol.py
+++ b/yt_dlp/extractor/uol.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_str,
diff --git a/yt_dlp/extractor/uplynk.py b/yt_dlp/extractor/uplynk.py
index 9adb96943e..04c96f388c 100644
--- a/yt_dlp/extractor/uplynk.py
+++ b/yt_dlp/extractor/uplynk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/urort.py b/yt_dlp/extractor/urort.py
index 020425fc7b..296799d386 100644
--- a/yt_dlp/extractor/urort.py
+++ b/yt_dlp/extractor/urort.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import (
     compat_urllib_parse,
diff --git a/yt_dlp/extractor/urplay.py b/yt_dlp/extractor/urplay.py
index eb2ab26e1f..30bd3dcbf3 100644
--- a/yt_dlp/extractor/urplay.py
+++ b/yt_dlp/extractor/urplay.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     dict_get,
diff --git a/yt_dlp/extractor/usanetwork.py b/yt_dlp/extractor/usanetwork.py
index d953e460b8..d6b58a51c4 100644
--- a/yt_dlp/extractor/usanetwork.py
+++ b/yt_dlp/extractor/usanetwork.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .nbc import NBCIE
 
 
diff --git a/yt_dlp/extractor/usatoday.py b/yt_dlp/extractor/usatoday.py
index b2103448df..3243f3e3bd 100644
--- a/yt_dlp/extractor/usatoday.py
+++ b/yt_dlp/extractor/usatoday.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/ustream.py b/yt_dlp/extractor/ustream.py
index 4a7a8f8798..fff21667aa 100644
--- a/yt_dlp/extractor/ustream.py
+++ b/yt_dlp/extractor/ustream.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import random
 import re
 
diff --git a/yt_dlp/extractor/ustudio.py b/yt_dlp/extractor/ustudio.py
index 92509d1bf1..fd5dad0fc0 100644
--- a/yt_dlp/extractor/ustudio.py
+++ b/yt_dlp/extractor/ustudio.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/utreon.py b/yt_dlp/extractor/utreon.py
index 4986635f24..1213ae1bf5 100644
--- a/yt_dlp/extractor/utreon.py
+++ b/yt_dlp/extractor/utreon.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     dict_get,
diff --git a/yt_dlp/extractor/varzesh3.py b/yt_dlp/extractor/varzesh3.py
index 32655b96de..2c13cbdc0b 100644
--- a/yt_dlp/extractor/varzesh3.py
+++ b/yt_dlp/extractor/varzesh3.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/vbox7.py b/yt_dlp/extractor/vbox7.py
index 8152acefd0..76c844cb87 100644
--- a/yt_dlp/extractor/vbox7.py
+++ b/yt_dlp/extractor/vbox7.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/veehd.py b/yt_dlp/extractor/veehd.py
index a6dc3c8d89..5ecd88726a 100644
--- a/yt_dlp/extractor/veehd.py
+++ b/yt_dlp/extractor/veehd.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 import json
 
diff --git a/yt_dlp/extractor/veo.py b/yt_dlp/extractor/veo.py
index d87bb5b47a..25d462a7d0 100644
--- a/yt_dlp/extractor/veo.py
+++ b/yt_dlp/extractor/veo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 from ..utils import (
diff --git a/yt_dlp/extractor/veoh.py b/yt_dlp/extractor/veoh.py
index d9afb5617b..70280ae850 100644
--- a/yt_dlp/extractor/veoh.py
+++ b/yt_dlp/extractor/veoh.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/vesti.py b/yt_dlp/extractor/vesti.py
index 002047dbf6..e9731a9415 100644
--- a/yt_dlp/extractor/vesti.py
+++ b/yt_dlp/extractor/vesti.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vevo.py b/yt_dlp/extractor/vevo.py
index 8a0f29259c..bc01875110 100644
--- a/yt_dlp/extractor/vevo.py
+++ b/yt_dlp/extractor/vevo.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 import json
 
diff --git a/yt_dlp/extractor/vgtv.py b/yt_dlp/extractor/vgtv.py
index 9d6090b08e..6564b7b0bd 100644
--- a/yt_dlp/extractor/vgtv.py
+++ b/yt_dlp/extractor/vgtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vh1.py b/yt_dlp/extractor/vh1.py
index 862c5c7dcd..41b8a46075 100644
--- a/yt_dlp/extractor/vh1.py
+++ b/yt_dlp/extractor/vh1.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .mtv import MTVServicesInfoExtractor
 
 # TODO Remove - Reason: Outdated Site
diff --git a/yt_dlp/extractor/vice.py b/yt_dlp/extractor/vice.py
index c8c30559e7..abb4a6fa0b 100644
--- a/yt_dlp/extractor/vice.py
+++ b/yt_dlp/extractor/vice.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import functools
 import hashlib
 import json
diff --git a/yt_dlp/extractor/vidbit.py b/yt_dlp/extractor/vidbit.py
index 91f45b7cc7..2813032db0 100644
--- a/yt_dlp/extractor/vidbit.py
+++ b/yt_dlp/extractor/vidbit.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urlparse
 from ..utils import (
diff --git a/yt_dlp/extractor/viddler.py b/yt_dlp/extractor/viddler.py
index ecc48246f4..f491b67efd 100644
--- a/yt_dlp/extractor/viddler.py
+++ b/yt_dlp/extractor/viddler.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     float_or_none,
diff --git a/yt_dlp/extractor/videa.py b/yt_dlp/extractor/videa.py
index 90d7050921..251eb78feb 100644
--- a/yt_dlp/extractor/videa.py
+++ b/yt_dlp/extractor/videa.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 import re
 import string
diff --git a/yt_dlp/extractor/videocampus_sachsen.py b/yt_dlp/extractor/videocampus_sachsen.py
index 96e98573f3..fe9e061ae2 100644
--- a/yt_dlp/extractor/videocampus_sachsen.py
+++ b/yt_dlp/extractor/videocampus_sachsen.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/videodetective.py b/yt_dlp/extractor/videodetective.py
index fe70db713e..7928a41c21 100644
--- a/yt_dlp/extractor/videodetective.py
+++ b/yt_dlp/extractor/videodetective.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .internetvideoarchive import InternetVideoArchiveIE
 
diff --git a/yt_dlp/extractor/videofyme.py b/yt_dlp/extractor/videofyme.py
index cd3f50a63b..1d1c8f7b7c 100644
--- a/yt_dlp/extractor/videofyme.py
+++ b/yt_dlp/extractor/videofyme.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/videomore.py b/yt_dlp/extractor/videomore.py
index 17ef3b1b9e..09d12d192e 100644
--- a/yt_dlp/extractor/videomore.py
+++ b/yt_dlp/extractor/videomore.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/videopress.py b/yt_dlp/extractor/videopress.py
index 6376ff0961..3c5e27a9dc 100644
--- a/yt_dlp/extractor/videopress.py
+++ b/yt_dlp/extractor/videopress.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vidio.py b/yt_dlp/extractor/vidio.py
index 6bfb8d4429..599996bf95 100644
--- a/yt_dlp/extractor/vidio.py
+++ b/yt_dlp/extractor/vidio.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     clean_html,
diff --git a/yt_dlp/extractor/vidlii.py b/yt_dlp/extractor/vidlii.py
index a63919ff24..b9845affd7 100644
--- a/yt_dlp/extractor/vidlii.py
+++ b/yt_dlp/extractor/vidlii.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vidzi.py b/yt_dlp/extractor/vidzi.py
index 42ea4952c3..efa9be116e 100644
--- a/yt_dlp/extractor/vidzi.py
+++ b/yt_dlp/extractor/vidzi.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vier.py b/yt_dlp/extractor/vier.py
index 94aa350e78..eab894ab63 100644
--- a/yt_dlp/extractor/vier.py
+++ b/yt_dlp/extractor/vier.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import itertools
 
diff --git a/yt_dlp/extractor/viewlift.py b/yt_dlp/extractor/viewlift.py
index 4627f66fdf..d081a2f125 100644
--- a/yt_dlp/extractor/viewlift.py
+++ b/yt_dlp/extractor/viewlift.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 import re
 
diff --git a/yt_dlp/extractor/viidea.py b/yt_dlp/extractor/viidea.py
index 0da06818b5..157ce4d8f9 100644
--- a/yt_dlp/extractor/viidea.py
+++ b/yt_dlp/extractor/viidea.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/viki.py b/yt_dlp/extractor/viki.py
index 8a930798d0..a922b195c9 100644
--- a/yt_dlp/extractor/viki.py
+++ b/yt_dlp/extractor/viki.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
 import hashlib
 import hmac
 import json
diff --git a/yt_dlp/extractor/vimeo.py b/yt_dlp/extractor/vimeo.py
index a00b387f3e..b2c9293738 100644
--- a/yt_dlp/extractor/vimeo.py
+++ b/yt_dlp/extractor/vimeo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import functools
 import re
diff --git a/yt_dlp/extractor/vimm.py b/yt_dlp/extractor/vimm.py
index 060b92ba60..3522b8e332 100644
--- a/yt_dlp/extractor/vimm.py
+++ b/yt_dlp/extractor/vimm.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/vimple.py b/yt_dlp/extractor/vimple.py
index c74b437668..a8b16dd290 100644
--- a/yt_dlp/extractor/vimple.py
+++ b/yt_dlp/extractor/vimple.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import int_or_none
 
diff --git a/yt_dlp/extractor/vine.py b/yt_dlp/extractor/vine.py
index e59b1037b0..bbf43a83fc 100644
--- a/yt_dlp/extractor/vine.py
+++ b/yt_dlp/extractor/vine.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/viqeo.py b/yt_dlp/extractor/viqeo.py
index be7dfa814f..d214223e9a 100644
--- a/yt_dlp/extractor/viqeo.py
+++ b/yt_dlp/extractor/viqeo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/viu.py b/yt_dlp/extractor/viu.py
index ba627ca5b7..63b6fd3a12 100644
--- a/yt_dlp/extractor/viu.py
+++ b/yt_dlp/extractor/viu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import json
 import uuid
diff --git a/yt_dlp/extractor/vk.py b/yt_dlp/extractor/vk.py
index cbc315961e..402508aa34 100644
--- a/yt_dlp/extractor/vk.py
+++ b/yt_dlp/extractor/vk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import collections
 import re
 
diff --git a/yt_dlp/extractor/vlive.py b/yt_dlp/extractor/vlive.py
index ae35c976c2..c608014170 100644
--- a/yt_dlp/extractor/vlive.py
+++ b/yt_dlp/extractor/vlive.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import json
 
diff --git a/yt_dlp/extractor/vodlocker.py b/yt_dlp/extractor/vodlocker.py
index 02c9617d29..1c7236ed31 100644
--- a/yt_dlp/extractor/vodlocker.py
+++ b/yt_dlp/extractor/vodlocker.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/vodpl.py b/yt_dlp/extractor/vodpl.py
index 9e919708ed..8af1572d07 100644
--- a/yt_dlp/extractor/vodpl.py
+++ b/yt_dlp/extractor/vodpl.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .onet import OnetBaseIE
 
 
diff --git a/yt_dlp/extractor/vodplatform.py b/yt_dlp/extractor/vodplatform.py
index 74d2257e7c..2b45dcd866 100644
--- a/yt_dlp/extractor/vodplatform.py
+++ b/yt_dlp/extractor/vodplatform.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import unescapeHTML
 
diff --git a/yt_dlp/extractor/voicerepublic.py b/yt_dlp/extractor/voicerepublic.py
index a52e40afa2..e8cbd0e32c 100644
--- a/yt_dlp/extractor/voicerepublic.py
+++ b/yt_dlp/extractor/voicerepublic.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/voicy.py b/yt_dlp/extractor/voicy.py
index 37c7d5685f..e4570a03ae 100644
--- a/yt_dlp/extractor/voicy.py
+++ b/yt_dlp/extractor/voicy.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/voot.py b/yt_dlp/extractor/voot.py
index a9b66b95c2..7ac38a813a 100644
--- a/yt_dlp/extractor/voot.py
+++ b/yt_dlp/extractor/voot.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/voxmedia.py b/yt_dlp/extractor/voxmedia.py
index 6612081258..a7bf298aaf 100644
--- a/yt_dlp/extractor/voxmedia.py
+++ b/yt_dlp/extractor/voxmedia.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from .once import OnceIE
 from ..compat import compat_urllib_parse_unquote
diff --git a/yt_dlp/extractor/vrak.py b/yt_dlp/extractor/vrak.py
index daa247cce4..198c0a2942 100644
--- a/yt_dlp/extractor/vrak.py
+++ b/yt_dlp/extractor/vrak.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vrt.py b/yt_dlp/extractor/vrt.py
index 10dc94abcb..26f48bf67f 100644
--- a/yt_dlp/extractor/vrt.py
+++ b/yt_dlp/extractor/vrt.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     extract_attributes,
diff --git a/yt_dlp/extractor/vrv.py b/yt_dlp/extractor/vrv.py
index 00e1006c45..35662753ed 100644
--- a/yt_dlp/extractor/vrv.py
+++ b/yt_dlp/extractor/vrv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import json
 import hashlib
diff --git a/yt_dlp/extractor/vshare.py b/yt_dlp/extractor/vshare.py
index b4874ac390..8ef75d30e3 100644
--- a/yt_dlp/extractor/vshare.py
+++ b/yt_dlp/extractor/vshare.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vtm.py b/yt_dlp/extractor/vtm.py
index 093f1aa699..6381fd311f 100644
--- a/yt_dlp/extractor/vtm.py
+++ b/yt_dlp/extractor/vtm.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/vuclip.py b/yt_dlp/extractor/vuclip.py
index 55e087bdb4..0e562983d0 100644
--- a/yt_dlp/extractor/vuclip.py
+++ b/yt_dlp/extractor/vuclip.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vupload.py b/yt_dlp/extractor/vupload.py
index b561f63f73..23ea70c77e 100644
--- a/yt_dlp/extractor/vupload.py
+++ b/yt_dlp/extractor/vupload.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/vvvvid.py b/yt_dlp/extractor/vvvvid.py
index 3faa90fbd6..ccc44d08a3 100644
--- a/yt_dlp/extractor/vvvvid.py
+++ b/yt_dlp/extractor/vvvvid.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/vyborymos.py b/yt_dlp/extractor/vyborymos.py
index 4d93666c54..3865187951 100644
--- a/yt_dlp/extractor/vyborymos.py
+++ b/yt_dlp/extractor/vyborymos.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 
diff --git a/yt_dlp/extractor/vzaar.py b/yt_dlp/extractor/vzaar.py
index 54f88bba82..7ce0ba9f56 100644
--- a/yt_dlp/extractor/vzaar.py
+++ b/yt_dlp/extractor/vzaar.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/wakanim.py b/yt_dlp/extractor/wakanim.py
index a70a71961a..155008f8cb 100644
--- a/yt_dlp/extractor/wakanim.py
+++ b/yt_dlp/extractor/wakanim.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from urllib.parse import unquote
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/walla.py b/yt_dlp/extractor/walla.py
index 00f081bcaa..6b954c5cc2 100644
--- a/yt_dlp/extractor/walla.py
+++ b/yt_dlp/extractor/walla.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/wasdtv.py b/yt_dlp/extractor/wasdtv.py
index 38c10dc621..bf1ad65b23 100644
--- a/yt_dlp/extractor/wasdtv.py
+++ b/yt_dlp/extractor/wasdtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/washingtonpost.py b/yt_dlp/extractor/washingtonpost.py
index 9d6ae2870c..7274eaa396 100644
--- a/yt_dlp/extractor/washingtonpost.py
+++ b/yt_dlp/extractor/washingtonpost.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/wat.py b/yt_dlp/extractor/wat.py
index 9ff4523db6..2ad664890a 100644
--- a/yt_dlp/extractor/wat.py
+++ b/yt_dlp/extractor/wat.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/watchbox.py b/yt_dlp/extractor/watchbox.py
index d19d80102c..e41148d4a6 100644
--- a/yt_dlp/extractor/watchbox.py
+++ b/yt_dlp/extractor/watchbox.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/watchindianporn.py b/yt_dlp/extractor/watchindianporn.py
index a86819173f..3ded2d1d48 100644
--- a/yt_dlp/extractor/watchindianporn.py
+++ b/yt_dlp/extractor/watchindianporn.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/wdr.py b/yt_dlp/extractor/wdr.py
index ef58a66c3b..d0ad69477d 100644
--- a/yt_dlp/extractor/wdr.py
+++ b/yt_dlp/extractor/wdr.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/webcaster.py b/yt_dlp/extractor/webcaster.py
index a858e992ca..374fe35cd3 100644
--- a/yt_dlp/extractor/webcaster.py
+++ b/yt_dlp/extractor/webcaster.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/webofstories.py b/yt_dlp/extractor/webofstories.py
index f2b8d19b43..fde9300b0f 100644
--- a/yt_dlp/extractor/webofstories.py
+++ b/yt_dlp/extractor/webofstories.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/weibo.py b/yt_dlp/extractor/weibo.py
index dafa2af3be..d5a52ce20e 100644
--- a/yt_dlp/extractor/weibo.py
+++ b/yt_dlp/extractor/weibo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 import json
diff --git a/yt_dlp/extractor/weiqitv.py b/yt_dlp/extractor/weiqitv.py
index 7e0befd392..c9ff641542 100644
--- a/yt_dlp/extractor/weiqitv.py
+++ b/yt_dlp/extractor/weiqitv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/whowatch.py b/yt_dlp/extractor/whowatch.py
index e4b610d00d..21574471c4 100644
--- a/yt_dlp/extractor/whowatch.py
+++ b/yt_dlp/extractor/whowatch.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/willow.py b/yt_dlp/extractor/willow.py
index 4d3d62f955..6c71e9a04c 100644
--- a/yt_dlp/extractor/willow.py
+++ b/yt_dlp/extractor/willow.py
@@ -1,4 +1,3 @@
-# coding: utf-8
 from ..utils import ExtractorError
 from .common import InfoExtractor
 
diff --git a/yt_dlp/extractor/wimtv.py b/yt_dlp/extractor/wimtv.py
index ea953bf776..6e7ec3436f 100644
--- a/yt_dlp/extractor/wimtv.py
+++ b/yt_dlp/extractor/wimtv.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/wistia.py b/yt_dlp/extractor/wistia.py
index a170966c36..8f0e7949b2 100644
--- a/yt_dlp/extractor/wistia.py
+++ b/yt_dlp/extractor/wistia.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/worldstarhiphop.py b/yt_dlp/extractor/worldstarhiphop.py
index 82587b4ce9..c6948a1eb0 100644
--- a/yt_dlp/extractor/worldstarhiphop.py
+++ b/yt_dlp/extractor/worldstarhiphop.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 
 
diff --git a/yt_dlp/extractor/wppilot.py b/yt_dlp/extractor/wppilot.py
index 3003a0f108..6349e5326b 100644
--- a/yt_dlp/extractor/wppilot.py
+++ b/yt_dlp/extractor/wppilot.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 from .common import InfoExtractor
 from ..utils import (
     try_get,
diff --git a/yt_dlp/extractor/wsj.py b/yt_dlp/extractor/wsj.py
index 67236f377d..8be3645e35 100644
--- a/yt_dlp/extractor/wsj.py
+++ b/yt_dlp/extractor/wsj.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/wwe.py b/yt_dlp/extractor/wwe.py
index bebc77bb54..9bbd477c33 100644
--- a/yt_dlp/extractor/wwe.py
+++ b/yt_dlp/extractor/wwe.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/xbef.py b/yt_dlp/extractor/xbef.py
index 4c41e98b27..ac69528a3a 100644
--- a/yt_dlp/extractor/xbef.py
+++ b/yt_dlp/extractor/xbef.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urllib_parse_unquote
 
diff --git a/yt_dlp/extractor/xboxclips.py b/yt_dlp/extractor/xboxclips.py
index 9bac982f84..235b567d99 100644
--- a/yt_dlp/extractor/xboxclips.py
+++ b/yt_dlp/extractor/xboxclips.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/xfileshare.py b/yt_dlp/extractor/xfileshare.py
index cd97c77dc6..28b6ecb6ea 100644
--- a/yt_dlp/extractor/xfileshare.py
+++ b/yt_dlp/extractor/xfileshare.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/xhamster.py b/yt_dlp/extractor/xhamster.py
index 9d4ed47d41..ff15d37076 100644
--- a/yt_dlp/extractor/xhamster.py
+++ b/yt_dlp/extractor/xhamster.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/xiami.py b/yt_dlp/extractor/xiami.py
index 769aab3316..71b2956a8e 100644
--- a/yt_dlp/extractor/xiami.py
+++ b/yt_dlp/extractor/xiami.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_urllib_parse_unquote
 from ..utils import int_or_none
diff --git a/yt_dlp/extractor/ximalaya.py b/yt_dlp/extractor/ximalaya.py
index 802d1bb1b4..c3447fba08 100644
--- a/yt_dlp/extractor/ximalaya.py
+++ b/yt_dlp/extractor/ximalaya.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/xinpianchang.py b/yt_dlp/extractor/xinpianchang.py
index 9832d23985..96e23bb8d0 100644
--- a/yt_dlp/extractor/xinpianchang.py
+++ b/yt_dlp/extractor/xinpianchang.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
diff --git a/yt_dlp/extractor/xminus.py b/yt_dlp/extractor/xminus.py
index 36e5ead1e6..5f113810fd 100644
--- a/yt_dlp/extractor/xminus.py
+++ b/yt_dlp/extractor/xminus.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import time
 
diff --git a/yt_dlp/extractor/xnxx.py b/yt_dlp/extractor/xnxx.py
index 27f9916277..14beb13475 100644
--- a/yt_dlp/extractor/xnxx.py
+++ b/yt_dlp/extractor/xnxx.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/xstream.py b/yt_dlp/extractor/xstream.py
index 792843df58..42bffb071f 100644
--- a/yt_dlp/extractor/xstream.py
+++ b/yt_dlp/extractor/xstream.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/xtube.py b/yt_dlp/extractor/xtube.py
index abd319188d..93a6a3f335 100644
--- a/yt_dlp/extractor/xtube.py
+++ b/yt_dlp/extractor/xtube.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/xuite.py b/yt_dlp/extractor/xuite.py
index 0276c0dbb2..52423a3279 100644
--- a/yt_dlp/extractor/xuite.py
+++ b/yt_dlp/extractor/xuite.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/xvideos.py b/yt_dlp/extractor/xvideos.py
index d5261b6ab4..50b9394961 100644
--- a/yt_dlp/extractor/xvideos.py
+++ b/yt_dlp/extractor/xvideos.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/xxxymovies.py b/yt_dlp/extractor/xxxymovies.py
index 0d536015cc..e3e3a9fe63 100644
--- a/yt_dlp/extractor/xxxymovies.py
+++ b/yt_dlp/extractor/xxxymovies.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,
diff --git a/yt_dlp/extractor/yahoo.py b/yt_dlp/extractor/yahoo.py
index 20504de2c0..3fe6192bf6 100644
--- a/yt_dlp/extractor/yahoo.py
+++ b/yt_dlp/extractor/yahoo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import itertools
 import re
diff --git a/yt_dlp/extractor/yandexdisk.py b/yt_dlp/extractor/yandexdisk.py
index c15f3a4f32..d87a7f9be9 100644
--- a/yt_dlp/extractor/yandexdisk.py
+++ b/yt_dlp/extractor/yandexdisk.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/yandexmusic.py b/yt_dlp/extractor/yandexmusic.py
index a3558cc126..8ea416a1d8 100644
--- a/yt_dlp/extractor/yandexmusic.py
+++ b/yt_dlp/extractor/yandexmusic.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import itertools
 
diff --git a/yt_dlp/extractor/yandexvideo.py b/yt_dlp/extractor/yandexvideo.py
index 7d3966bf1a..37ff514b3a 100644
--- a/yt_dlp/extractor/yandexvideo.py
+++ b/yt_dlp/extractor/yandexvideo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 import re
 
diff --git a/yt_dlp/extractor/yapfiles.py b/yt_dlp/extractor/yapfiles.py
index cfb368de94..8fabdf81c9 100644
--- a/yt_dlp/extractor/yapfiles.py
+++ b/yt_dlp/extractor/yapfiles.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/yesjapan.py b/yt_dlp/extractor/yesjapan.py
index 681338c96a..b45fa8f144 100644
--- a/yt_dlp/extractor/yesjapan.py
+++ b/yt_dlp/extractor/yesjapan.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import (
     HEADRequest,
diff --git a/yt_dlp/extractor/yinyuetai.py b/yt_dlp/extractor/yinyuetai.py
index 1fd8d35c63..b28c393808 100644
--- a/yt_dlp/extractor/yinyuetai.py
+++ b/yt_dlp/extractor/yinyuetai.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import ExtractorError
 
diff --git a/yt_dlp/extractor/ynet.py b/yt_dlp/extractor/ynet.py
index c4ae4d88eb..4447859479 100644
--- a/yt_dlp/extractor/ynet.py
+++ b/yt_dlp/extractor/ynet.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 import json
 
diff --git a/yt_dlp/extractor/youjizz.py b/yt_dlp/extractor/youjizz.py
index 111623ffe6..cd12be500b 100644
--- a/yt_dlp/extractor/youjizz.py
+++ b/yt_dlp/extractor/youjizz.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
diff --git a/yt_dlp/extractor/youku.py b/yt_dlp/extractor/youku.py
index b505799153..45856fbbea 100644
--- a/yt_dlp/extractor/youku.py
+++ b/yt_dlp/extractor/youku.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import random
 import re
 import string
diff --git a/yt_dlp/extractor/younow.py b/yt_dlp/extractor/younow.py
index 583aea38d9..76d89f3cec 100644
--- a/yt_dlp/extractor/younow.py
+++ b/yt_dlp/extractor/younow.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import itertools
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/youporn.py b/yt_dlp/extractor/youporn.py
index 5feb568e72..5aea82295a 100644
--- a/yt_dlp/extractor/youporn.py
+++ b/yt_dlp/extractor/youporn.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/yourporn.py b/yt_dlp/extractor/yourporn.py
index 98347491ee..38f42a991c 100644
--- a/yt_dlp/extractor/yourporn.py
+++ b/yt_dlp/extractor/yourporn.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
diff --git a/yt_dlp/extractor/yourupload.py b/yt_dlp/extractor/yourupload.py
index 9fa7728389..def63293aa 100644
--- a/yt_dlp/extractor/yourupload.py
+++ b/yt_dlp/extractor/yourupload.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import urljoin
 
diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index f284487b8a..21c6143bd3 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import calendar
 import copy
 import datetime
@@ -452,7 +448,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
             return None
         # SAPISIDHASH algorithm from https://stackoverflow.com/a/32065323
         sapisidhash = hashlib.sha1(
-            f'{time_now} {self._SAPISID} {origin}'.encode('utf-8')).hexdigest()
+            f'{time_now} {self._SAPISID} {origin}'.encode()).hexdigest()
         return f'SAPISIDHASH {time_now}_{sapisidhash}'
 
     def _call_api(self, ep, query, video_id, fatal=True, headers=None,
@@ -466,14 +462,14 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
         if headers:
             real_headers.update(headers)
         return self._download_json(
-            'https://%s/youtubei/v1/%s' % (api_hostname or self._get_innertube_host(default_client), ep),
+            f'https://{api_hostname or self._get_innertube_host(default_client)}/youtubei/v1/{ep}',
             video_id=video_id, fatal=fatal, note=note, errnote=errnote,
             data=json.dumps(data).encode('utf8'), headers=real_headers,
             query={'key': api_key or self._extract_api_key(), 'prettyPrint': 'false'})
 
     def extract_yt_initial_data(self, item_id, webpage, fatal=True):
         data = self._search_regex(
-            (r'%s\s*%s' % (self._YT_INITIAL_DATA_RE, self._YT_INITIAL_BOUNDARY_RE),
+            (fr'{self._YT_INITIAL_DATA_RE}\s*{self._YT_INITIAL_BOUNDARY_RE}',
              self._YT_INITIAL_DATA_RE), webpage, 'yt initial data', fatal=fatal)
         if data:
             return self._parse_json(data, item_id, fatal=fatal)
@@ -657,7 +653,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
                 warnings.append([alert_type, alert_message])
 
         for alert_type, alert_message in (warnings + errors[:-1]):
-            self.report_warning('YouTube said: %s - %s' % (alert_type, alert_message), only_once=only_once)
+            self.report_warning(f'YouTube said: {alert_type} - {alert_message}', only_once=only_once)
         if errors:
             raise ExtractorError('YouTube said: %s' % errors[-1][1], expected=expected)
 
@@ -2214,10 +2210,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         qs = parse_qs(url)
         if qs.get('list', [None])[0]:
             return False
-        return super(YoutubeIE, cls).suitable(url)
+        return super().suitable(url)
 
     def __init__(self, *args, **kwargs):
-        super(YoutubeIE, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self._code_cache = {}
         self._player_cache = {}
 
@@ -2413,8 +2409,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         player_id = self._extract_player_info(player_url)
 
         # Read from filesystem cache
-        func_id = 'js_%s_%s' % (
-            player_id, self._signature_cache_id(example_sig))
+        func_id = f'js_{player_id}_{self._signature_cache_id(example_sig)}'
         assert os.path.basename(func_id) == func_id
 
         cache_spec = self._downloader.cache.load('youtube-sigfuncs', func_id)
@@ -2441,7 +2436,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 starts = '' if start == 0 else str(start)
                 ends = (':%d' % (end + step)) if end + step >= 0 else ':'
                 steps = '' if step == 1 else (':%d' % step)
-                return 's[%s%s%s]' % (starts, ends, steps)
+                return f's[{starts}{ends}{steps}]'
 
             step = None
             # Quelch pyflakes warnings - start will be set when step is set
@@ -2603,7 +2598,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         # cpn generation algorithm is reverse engineered from base.js.
         # In fact it works even with dummy cpn.
         CPN_ALPHABET = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
-        cpn = ''.join((CPN_ALPHABET[random.randint(0, 256) & 63] for _ in range(0, 16)))
+        cpn = ''.join(CPN_ALPHABET[random.randint(0, 256) & 63] for _ in range(0, 16))
 
         qs.update({
             'ver': ['2'],
@@ -2714,7 +2709,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
     def _extract_yt_initial_variable(self, webpage, regex, video_id, name):
         return self._parse_json(self._search_regex(
-            (r'%s\s*%s' % (regex, self._YT_INITIAL_BOUNDARY_RE),
+            (fr'{regex}\s*{self._YT_INITIAL_BOUNDARY_RE}',
              regex), webpage, name, default='{}'), video_id, fatal=False)
 
     def _extract_comment(self, comment_renderer, parent=None):
@@ -2812,8 +2807,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     comment_entries_iter = self._comment_entries(
                         comment_replies_renderer, ytcfg, video_id,
                         parent=comment.get('id'), tracker=tracker)
-                    for reply_comment in itertools.islice(comment_entries_iter, min(max_replies_per_thread, max(0, max_replies - tracker['total_reply_comments']))):
-                        yield reply_comment
+                    yield from itertools.islice(comment_entries_iter, min(
+                        max_replies_per_thread, max(0, max_replies - tracker['total_reply_comments'])))
 
         # Keeps track of counts across recursive calls
         if not tracker:
@@ -2955,7 +2950,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         requested_clients = []
         default = ['android', 'web']
         allowed_clients = sorted(
-            [client for client in INNERTUBE_CLIENTS.keys() if client[:1] != '_'],
+            (client for client in INNERTUBE_CLIENTS.keys() if client[:1] != '_'),
             key=lambda client: INNERTUBE_CLIENTS[client]['priority'], reverse=True)
         for client in self._configuration_arg('player_client'):
             if client in allowed_clients:
@@ -3865,8 +3860,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
             # TODO: add support for nested playlists so each shelf is processed
             # as separate playlist
             # TODO: this includes only first N items
-            for entry in self._grid_entries(renderer):
-                yield entry
+            yield from self._grid_entries(renderer)
         renderer = content.get('horizontalListRenderer')
         if renderer:
             # TODO
@@ -3886,8 +3880,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
             title = self._get_text(shelf_renderer, 'title')
             yield self.url_result(shelf_url, video_title=title)
         # Shelf may not contain shelf URL, fallback to extraction from content
-        for entry in self._shelf_entries_from_content(shelf_renderer):
-            yield entry
+        yield from self._shelf_entries_from_content(shelf_renderer)
 
     def _playlist_entries(self, video_list_renderer):
         for content in video_list_renderer['contents']:
@@ -3965,8 +3958,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
             renderer = content.get('backstagePostThreadRenderer')
             if not isinstance(renderer, dict):
                 continue
-            for entry in self._post_thread_entries(renderer):
-                yield entry
+            yield from self._post_thread_entries(renderer)
 
     r''' # unused
     def _rich_grid_entries(self, contents):
@@ -4036,8 +4028,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
         parent_renderer = (
             try_get(tab_content, lambda x: x['sectionListRenderer'], dict)
             or try_get(tab_content, lambda x: x['richGridRenderer'], dict) or {})
-        for entry in extract_entries(parent_renderer):
-            yield entry
+        yield from extract_entries(parent_renderer)
         continuation = continuation_list[0]
 
         for page_num in itertools.count(1):
@@ -4046,7 +4037,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
             headers = self.generate_api_headers(
                 ytcfg=ytcfg, account_syncid=account_syncid, visitor_data=visitor_data)
             response = self._extract_response(
-                item_id='%s page %s' % (item_id, page_num),
+                item_id=f'{item_id} page {page_num}',
                 query=continuation, headers=headers, ytcfg=ytcfg,
                 check_get_keys=('continuationContents', 'onResponseReceivedActions', 'onResponseReceivedEndpoints'))
 
@@ -4070,8 +4061,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
                     continue
                 continuation_renderer = value
                 continuation_list = [None]
-                for entry in known_continuation_renderers[key](continuation_renderer):
-                    yield entry
+                yield from known_continuation_renderers[key](continuation_renderer)
                 continuation = continuation_list[0] or self._extract_continuation(continuation_renderer)
                 break
             if continuation_renderer:
@@ -4097,8 +4087,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
                     continue
                 video_items_renderer = {known_renderers[key][1]: continuation_items}
                 continuation_list = [None]
-                for entry in known_renderers[key][0](video_items_renderer):
-                    yield entry
+                yield from known_renderers[key][0](video_items_renderer)
                 continuation = continuation_list[0] or self._extract_continuation(video_items_renderer)
                 break
             if video_items_renderer:
@@ -4470,7 +4459,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
             ('continuationContents', ),
         )
         display_id = f'query "{query}"'
-        check_get_keys = tuple(set(keys[0] for keys in content_keys))
+        check_get_keys = tuple({keys[0] for keys in content_keys})
         ytcfg = self._download_ytcfg(default_client, display_id) if not self.skip_webpage else {}
         self._report_playlist_authcheck(ytcfg, fatal=False)
 
@@ -5180,8 +5169,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
 
     @classmethod
     def suitable(cls, url):
-        return False if YoutubeIE.suitable(url) else super(
-            YoutubeTabIE, cls).suitable(url)
+        return False if YoutubeIE.suitable(url) else super().suitable(url)
 
     _URL_RE = re.compile(rf'(?P<pre>{_VALID_URL})(?(not_channel)|(?P<tab>/\w+))?(?P<post>.*)$')
 
@@ -5228,7 +5216,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
 
         # Handle both video/playlist URLs
         qs = parse_qs(url)
-        video_id, playlist_id = [qs.get(key, [None])[0] for key in ('v', 'list')]
+        video_id, playlist_id = (qs.get(key, [None])[0] for key in ('v', 'list'))
 
         if not video_id and mobj['not_channel'].startswith('watch'):
             if not playlist_id:
@@ -5414,7 +5402,7 @@ class YoutubePlaylistIE(InfoExtractor):
         qs = parse_qs(url)
         if qs.get('v', [None])[0]:
             return False
-        return super(YoutubePlaylistIE, cls).suitable(url)
+        return super().suitable(url)
 
     def _real_extract(self, url):
         playlist_id = self._match_id(url)
@@ -5883,5 +5871,5 @@ class YoutubeTruncatedIDIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
         raise ExtractorError(
-            'Incomplete YouTube ID %s. URL %s looks truncated.' % (video_id, url),
+            f'Incomplete YouTube ID {video_id}. URL {url} looks truncated.',
             expected=True)
diff --git a/yt_dlp/extractor/zapiks.py b/yt_dlp/extractor/zapiks.py
index 161b011ab6..a1546fd88f 100644
--- a/yt_dlp/extractor/zapiks.py
+++ b/yt_dlp/extractor/zapiks.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/zattoo.py b/yt_dlp/extractor/zattoo.py
index 8614ca23de..16f827a7e1 100644
--- a/yt_dlp/extractor/zattoo.py
+++ b/yt_dlp/extractor/zattoo.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 from uuid import uuid4
 
diff --git a/yt_dlp/extractor/zdf.py b/yt_dlp/extractor/zdf.py
index 5f4d26622f..a388ff562b 100644
--- a/yt_dlp/extractor/zdf.py
+++ b/yt_dlp/extractor/zdf.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/extractor/zee5.py b/yt_dlp/extractor/zee5.py
index 9e411d83ff..9ff36052ea 100644
--- a/yt_dlp/extractor/zee5.py
+++ b/yt_dlp/extractor/zee5.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import json
 
 from .common import InfoExtractor
@@ -96,14 +93,14 @@ class Zee5IE(InfoExtractor):
     def _perform_login(self, username, password):
         if len(username) == 10 and username.isdigit() and self._USER_TOKEN is None:
             self.report_login()
-            otp_request_json = self._download_json('https://b2bapi.zee5.com/device/sendotp_v1.php?phoneno=91{}'.format(username),
+            otp_request_json = self._download_json(f'https://b2bapi.zee5.com/device/sendotp_v1.php?phoneno=91{username}',
                                                    None, note='Sending OTP')
             if otp_request_json['code'] == 0:
                 self.to_screen(otp_request_json['message'])
             else:
                 raise ExtractorError(otp_request_json['message'], expected=True)
             otp_code = self._get_tfa_info('OTP')
-            otp_verify_json = self._download_json('https://b2bapi.zee5.com/device/verifyotp_v1.php?phoneno=91{}&otp={}&guest_token={}&platform=web'.format(username, otp_code, self._DEVICE_ID),
+            otp_verify_json = self._download_json(f'https://b2bapi.zee5.com/device/verifyotp_v1.php?phoneno=91{username}&otp={otp_code}&guest_token={self._DEVICE_ID}&platform=web',
                                                   None, note='Verifying OTP', fatal=False)
             if not otp_verify_json:
                 raise ExtractorError('Unable to verify OTP.', expected=True)
@@ -227,13 +224,13 @@ class Zee5SeriesIE(InfoExtractor):
             'X-Access-Token': access_token_request['token'],
             'Referer': 'https://www.zee5.com/',
         }
-        show_url = 'https://gwapi.zee5.com/content/tvshow/{}?translation=en&country=IN'.format(show_id)
+        show_url = f'https://gwapi.zee5.com/content/tvshow/{show_id}?translation=en&country=IN'
 
         page_num = 0
         show_json = self._download_json(show_url, video_id=show_id, headers=headers)
         for season in show_json.get('seasons') or []:
             season_id = try_get(season, lambda x: x['id'], compat_str)
-            next_url = 'https://gwapi.zee5.com/content/tvshow/?season_id={}&type=episode&translation=en&country=IN&on_air=false&asset_subtype=tvshow&page=1&limit=100'.format(season_id)
+            next_url = f'https://gwapi.zee5.com/content/tvshow/?season_id={season_id}&type=episode&translation=en&country=IN&on_air=false&asset_subtype=tvshow&page=1&limit=100'
             while next_url:
                 page_num += 1
                 episodes_json = self._download_json(
diff --git a/yt_dlp/extractor/zhihu.py b/yt_dlp/extractor/zhihu.py
index 278a9438e8..70eb3ccd1b 100644
--- a/yt_dlp/extractor/zhihu.py
+++ b/yt_dlp/extractor/zhihu.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..utils import format_field, float_or_none, int_or_none
 
diff --git a/yt_dlp/extractor/zingmp3.py b/yt_dlp/extractor/zingmp3.py
index 419bf30d85..42a8ac0561 100644
--- a/yt_dlp/extractor/zingmp3.py
+++ b/yt_dlp/extractor/zingmp3.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import hashlib
 import hmac
 import urllib.parse
diff --git a/yt_dlp/extractor/zoom.py b/yt_dlp/extractor/zoom.py
index c005488399..a455f8c04a 100644
--- a/yt_dlp/extractor/zoom.py
+++ b/yt_dlp/extractor/zoom.py
@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
diff --git a/yt_dlp/extractor/zype.py b/yt_dlp/extractor/zype.py
index 7663cb36b0..6f2fbb9e9d 100644
--- a/yt_dlp/extractor/zype.py
+++ b/yt_dlp/extractor/zype.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
diff --git a/yt_dlp/jsinterp.py b/yt_dlp/jsinterp.py
index 350b44dd07..3695a282d2 100644
--- a/yt_dlp/jsinterp.py
+++ b/yt_dlp/jsinterp.py
@@ -71,7 +71,7 @@ class LocalNameSpace(MutableMapping):
         return f'LocalNameSpace{self.stack}'
 
 
-class JSInterpreter(object):
+class JSInterpreter:
     def __init__(self, code, objects=None):
         if objects is None:
             objects = {}
@@ -232,7 +232,7 @@ class JSInterpreter(object):
             for default in (False, True):
                 matched = False
                 for item in items:
-                    case, stmt = [i.strip() for i in self._separate(item, ':', 1)]
+                    case, stmt = (i.strip() for i in self._separate(item, ':', 1))
                     if default:
                         matched = matched or case == 'default'
                     elif not matched:
@@ -268,10 +268,10 @@ class JSInterpreter(object):
             expr = expr[:start] + json.dumps(ret) + expr[end:]
 
         for op, opfunc in _ASSIGN_OPERATORS:
-            m = re.match(r'''(?x)
-                (?P<out>%s)(?:\[(?P<index>[^\]]+?)\])?
-                \s*%s
-                (?P<expr>.*)$''' % (_NAME_RE, re.escape(op)), expr)
+            m = re.match(rf'''(?x)
+                (?P<out>{_NAME_RE})(?:\[(?P<index>[^\]]+?)\])?
+                \s*{re.escape(op)}
+                (?P<expr>.*)$''', expr)
             if not m:
                 continue
             right_val = self.interpret_expression(m.group('expr'), local_vars, allow_recursion)
@@ -451,9 +451,9 @@ class JSInterpreter(object):
         m = re.match(r'^(?P<func>%s)\((?P<args>[a-zA-Z0-9_$,]*)\)$' % _NAME_RE, expr)
         if m:
             fname = m.group('func')
-            argvals = tuple([
+            argvals = tuple(
                 int(v) if v.isdigit() else local_vars[v]
-                for v in self._separate(m.group('args'))])
+                for v in self._separate(m.group('args')))
             if fname in local_vars:
                 return local_vars[fname](argvals)
             elif fname not in self._functions:
diff --git a/yt_dlp/options.py b/yt_dlp/options.py
index 8839b44d4b..c434e32b95 100644
--- a/yt_dlp/options.py
+++ b/yt_dlp/options.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import os.path
 import optparse
 import re
@@ -124,7 +122,7 @@ class _YoutubeDLOptionParser(optparse.OptionParser):
         try:
             return super()._match_long_opt(opt)
         except optparse.AmbiguousOptionError as e:
-            if len(set(self._long_opt[p] for p in e.possibilities)) == 1:
+            if len({self._long_opt[p] for p in e.possibilities}) == 1:
                 return e.possibilities[0]
             raise
 
@@ -189,9 +187,9 @@ def create_parser():
         out_dict = dict(getattr(parser.values, option.dest))
         multiple_args = not isinstance(value, str)
         if multiple_keys:
-            allowed_keys = r'(%s)(,(%s))*' % (allowed_keys, allowed_keys)
+            allowed_keys = fr'({allowed_keys})(,({allowed_keys}))*'
         mobj = re.match(
-            r'(?i)(?P<keys>%s)%s(?P<val>.*)$' % (allowed_keys, delimiter),
+            fr'(?i)(?P<keys>{allowed_keys}){delimiter}(?P<val>.*)$',
             value[0] if multiple_args else value)
         if mobj is not None:
             keys, val = mobj.group('keys').split(','), mobj.group('val')
@@ -201,7 +199,7 @@ def create_parser():
             keys, val = [default_key], value
         else:
             raise optparse.OptionValueError(
-                'wrong %s formatting; it should be %s, not "%s"' % (opt_str, option.metavar, value))
+                f'wrong {opt_str} formatting; it should be {option.metavar}, not "{value}"')
         try:
             keys = map(process_key, keys) if process_key else keys
             val = process(val) if process else val
diff --git a/yt_dlp/postprocessor/common.py b/yt_dlp/postprocessor/common.py
index 8420ee8641..3f55b24f2c 100644
--- a/yt_dlp/postprocessor/common.py
+++ b/yt_dlp/postprocessor/common.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import functools
 import itertools
 import json
@@ -73,7 +71,7 @@ class PostProcessor(metaclass=PostProcessorMetaClass):
     def to_screen(self, text, prefix=True, *args, **kwargs):
         tag = '[%s] ' % self.PP_NAME if prefix else ''
         if self._downloader:
-            return self._downloader.to_screen('%s%s' % (tag, text), *args, **kwargs)
+            return self._downloader.to_screen(f'{tag}{text}', *args, **kwargs)
 
     def report_warning(self, text, *args, **kwargs):
         if self._downloader:
diff --git a/yt_dlp/postprocessor/embedthumbnail.py b/yt_dlp/postprocessor/embedthumbnail.py
index 057007f2e9..2fca977846 100644
--- a/yt_dlp/postprocessor/embedthumbnail.py
+++ b/yt_dlp/postprocessor/embedthumbnail.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import base64
 import imghdr
 import os
@@ -61,7 +58,7 @@ class EmbedThumbnailPP(FFmpegPostProcessor):
         return int(mobj.group('w')), int(mobj.group('h'))
 
     def _report_run(self, exe, filename):
-        self.to_screen('%s: Adding thumbnail to "%s"' % (exe, filename))
+        self.to_screen(f'{exe}: Adding thumbnail to "{filename}"')
 
     @PostProcessor._restrict_to(images=False)
     def run(self, info):
diff --git a/yt_dlp/postprocessor/exec.py b/yt_dlp/postprocessor/exec.py
index 63f4d23f26..6621889d5c 100644
--- a/yt_dlp/postprocessor/exec.py
+++ b/yt_dlp/postprocessor/exec.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import subprocess
 
 from .common import PostProcessor
diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py
index 78c6f91074..3175c8d10b 100644
--- a/yt_dlp/postprocessor/ffmpeg.py
+++ b/yt_dlp/postprocessor/ffmpeg.py
@@ -1,7 +1,4 @@
-from __future__ import unicode_literals
-
 import collections
-import io
 import itertools
 import os
 import subprocess
@@ -73,11 +70,9 @@ class FFmpegPostProcessor(PostProcessor):
             raise FFmpegPostProcessorError('ffmpeg not found. Please install or provide the path using --ffmpeg-location')
 
         required_version = '10-0' if self.basename == 'avconv' else '1.0'
-        if is_outdated_version(
-                self._versions[self.basename], required_version):
-            warning = 'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
-                self.basename, self.basename, required_version)
-            self.report_warning(warning)
+        if is_outdated_version(self._versions[self.basename], required_version):
+            self.report_warning(f'Your copy of {self.basename} is outdated, update {self.basename} '
+                                f'to version {required_version} or newer if you encounter any errors')
 
     @staticmethod
     def get_versions_and_features(downloader=None):
@@ -147,8 +142,8 @@ class FFmpegPostProcessor(PostProcessor):
                 if basename in ('ffmpeg', 'ffprobe'):
                     prefer_ffmpeg = True
 
-            self._paths = dict(
-                (p, os.path.join(dirname, p)) for p in programs)
+            self._paths = {
+                p: os.path.join(dirname, p) for p in programs}
             if basename:
                 self._paths[basename] = location
 
@@ -211,13 +206,13 @@ class FFmpegPostProcessor(PostProcessor):
                     encodeFilename(self.executable, True),
                     encodeArgument('-i')]
             cmd.append(encodeFilename(self._ffmpeg_filename_argument(path), True))
-            self.write_debug('%s command line: %s' % (self.basename, shell_quote(cmd)))
+            self.write_debug(f'{self.basename} command line: {shell_quote(cmd)}')
             handle = Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
             stdout_data, stderr_data = handle.communicate_or_kill()
             expected_ret = 0 if self.probe_available else 1
             if handle.wait() != expected_ret:
                 return None
-        except (IOError, OSError):
+        except OSError:
             return None
         output = (stdout_data if self.probe_available else stderr_data).decode('ascii', 'ignore')
         if self.probe_available:
@@ -539,7 +534,7 @@ class FFmpegVideoConvertorPP(FFmpegPostProcessor):
     _ACTION = 'converting'
 
     def __init__(self, downloader=None, preferedformat=None):
-        super(FFmpegVideoConvertorPP, self).__init__(downloader)
+        super().__init__(downloader)
         self._preferedformats = preferedformat.lower().split('/')
 
     def _target_ext(self, source_ext):
@@ -585,7 +580,7 @@ class FFmpegVideoRemuxerPP(FFmpegVideoConvertorPP):
 
 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
     def __init__(self, downloader=None, already_have_subtitle=False):
-        super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
+        super().__init__(downloader)
         self._already_have_subtitle = already_have_subtitle
 
     @PostProcessor._restrict_to(images=False)
@@ -713,7 +708,7 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
 
     @staticmethod
     def _get_chapter_opts(chapters, metadata_filename):
-        with io.open(metadata_filename, 'wt', encoding='utf-8') as f:
+        with open(metadata_filename, 'wt', encoding='utf-8') as f:
             def ffmpeg_escape(text):
                 return re.sub(r'([\\=;#\n])', r'\\\1', text)
 
@@ -899,7 +894,7 @@ class FFmpegFixupTimestampPP(FFmpegFixupPostProcessor):
 
     def __init__(self, downloader=None, trim=0.001):
         # "trim" should be used when the video contains unintended packets
-        super(FFmpegFixupTimestampPP, self).__init__(downloader)
+        super().__init__(downloader)
         assert isinstance(trim, (int, float))
         self.trim = str(trim)
 
@@ -937,7 +932,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
     SUPPORTED_EXTS = ('srt', 'vtt', 'ass', 'lrc')
 
     def __init__(self, downloader=None, format=None):
-        super(FFmpegSubtitlesConvertorPP, self).__init__(downloader)
+        super().__init__(downloader)
         self.format = format
 
     def run(self, info):
@@ -979,7 +974,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
                 with open(dfxp_file, 'rb') as f:
                     srt_data = dfxp2srt(f.read())
 
-                with io.open(srt_file, 'wt', encoding='utf-8') as f:
+                with open(srt_file, 'wt', encoding='utf-8') as f:
                     f.write(srt_data)
                 old_file = srt_file
 
@@ -996,7 +991,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
 
             self.run_ffmpeg(old_file, new_file, ['-f', new_format])
 
-            with io.open(new_file, 'rt', encoding='utf-8') as f:
+            with open(new_file, encoding='utf-8') as f:
                 subs[lang] = {
                     'ext': new_ext,
                     'data': f.read(),
@@ -1059,7 +1054,7 @@ class FFmpegThumbnailsConvertorPP(FFmpegPostProcessor):
     SUPPORTED_EXTS = ('jpg', 'png', 'webp')
 
     def __init__(self, downloader=None, format=None):
-        super(FFmpegThumbnailsConvertorPP, self).__init__(downloader)
+        super().__init__(downloader)
         self.format = format
 
     @staticmethod
@@ -1090,7 +1085,7 @@ class FFmpegThumbnailsConvertorPP(FFmpegPostProcessor):
     def convert_thumbnail(self, thumbnail_filename, target_ext):
         thumbnail_conv_filename = replace_extension(thumbnail_filename, target_ext)
 
-        self.to_screen('Converting thumbnail "%s" to %s' % (thumbnail_filename, target_ext))
+        self.to_screen(f'Converting thumbnail "{thumbnail_filename}" to {target_ext}')
         self.real_run_ffmpeg(
             [(thumbnail_filename, ['-f', 'image2', '-pattern_type', 'none'])],
             [(thumbnail_conv_filename.replace('%', '%%'), self._options(target_ext))])
diff --git a/yt_dlp/postprocessor/movefilesafterdownload.py b/yt_dlp/postprocessor/movefilesafterdownload.py
index 1064a8cb8d..bc3d15ca45 100644
--- a/yt_dlp/postprocessor/movefilesafterdownload.py
+++ b/yt_dlp/postprocessor/movefilesafterdownload.py
@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import os
 import shutil
 
@@ -47,7 +46,7 @@ class MoveFilesAfterDownloadPP(PostProcessor):
                         % (oldfile, newfile))
                     continue
             make_dir(newfile, PostProcessingError)
-            self.to_screen('Moving file "%s" to "%s"' % (oldfile, newfile))
+            self.to_screen(f'Moving file "{oldfile}" to "{newfile}"')
             shutil.move(oldfile, newfile)  # os.rename cannot move between volumes
 
         info['filepath'] = finalpath
diff --git a/yt_dlp/postprocessor/sponskrub.py b/yt_dlp/postprocessor/sponskrub.py
index 59cf0e0c3e..38089de086 100644
--- a/yt_dlp/postprocessor/sponskrub.py
+++ b/yt_dlp/postprocessor/sponskrub.py
@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import os
 import shlex
 import subprocess
diff --git a/yt_dlp/postprocessor/xattrpp.py b/yt_dlp/postprocessor/xattrpp.py
index 93acd6d133..5ad8509e7b 100644
--- a/yt_dlp/postprocessor/xattrpp.py
+++ b/yt_dlp/postprocessor/xattrpp.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from .common import PostProcessor
 from ..compat import compat_os_name
 from ..utils import (
diff --git a/yt_dlp/socks.py b/yt_dlp/socks.py
index 5d4adbe72d..ffa960e03c 100644
--- a/yt_dlp/socks.py
+++ b/yt_dlp/socks.py
@@ -1,8 +1,5 @@
 # Public Domain SOCKS proxy protocol implementation
 # Adapted from https://gist.github.com/bluec0re/cafd3764412967417fd3
-
-from __future__ import unicode_literals
-
 # References:
 # SOCKS4 protocol http://www.openssh.com/txt/socks4.protocol
 # SOCKS4A protocol http://www.openssh.com/txt/socks4a.protocol
@@ -33,7 +30,7 @@ SOCKS5_USER_AUTH_VERSION = 0x01
 SOCKS5_USER_AUTH_SUCCESS = 0x00
 
 
-class Socks4Command(object):
+class Socks4Command:
     CMD_CONNECT = 0x01
     CMD_BIND = 0x02
 
@@ -42,14 +39,14 @@ class Socks5Command(Socks4Command):
     CMD_UDP_ASSOCIATE = 0x03
 
 
-class Socks5Auth(object):
+class Socks5Auth:
     AUTH_NONE = 0x00
     AUTH_GSSAPI = 0x01
     AUTH_USER_PASS = 0x02
     AUTH_NO_ACCEPTABLE = 0xFF  # For server response
 
 
-class Socks5AddressType(object):
+class Socks5AddressType:
     ATYP_IPV4 = 0x01
     ATYP_DOMAINNAME = 0x03
     ATYP_IPV6 = 0x04
@@ -61,14 +58,14 @@ class ProxyError(socket.error):
     def __init__(self, code=None, msg=None):
         if code is not None and msg is None:
             msg = self.CODES.get(code) or 'unknown error'
-        super(ProxyError, self).__init__(code, msg)
+        super().__init__(code, msg)
 
 
 class InvalidVersionError(ProxyError):
     def __init__(self, expected_version, got_version):
-        msg = ('Invalid response version from server. Expected {0:02x} got '
-               '{1:02x}'.format(expected_version, got_version))
-        super(InvalidVersionError, self).__init__(0, msg)
+        msg = ('Invalid response version from server. Expected {:02x} got '
+               '{:02x}'.format(expected_version, got_version))
+        super().__init__(0, msg)
 
 
 class Socks4Error(ProxyError):
@@ -98,7 +95,7 @@ class Socks5Error(ProxyError):
     }
 
 
-class ProxyType(object):
+class ProxyType:
     SOCKS4 = 0
     SOCKS4A = 1
     SOCKS5 = 2
@@ -111,7 +108,7 @@ Proxy = collections.namedtuple('Proxy', (
 class sockssocket(socket.socket):
     def __init__(self, *args, **kwargs):
         self._proxy = None
-        super(sockssocket, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def setproxy(self, proxytype, addr, port, rdns=True, username=None, password=None):
         assert proxytype in (ProxyType.SOCKS4, ProxyType.SOCKS4A, ProxyType.SOCKS5)
@@ -123,13 +120,13 @@ class sockssocket(socket.socket):
         while len(data) < cnt:
             cur = self.recv(cnt - len(data))
             if not cur:
-                raise EOFError('{0} bytes missing'.format(cnt - len(data)))
+                raise EOFError(f'{cnt - len(data)} bytes missing')
             data += cur
         return data
 
     def _recv_bytes(self, cnt):
         data = self.recvall(cnt)
-        return compat_struct_unpack('!{0}B'.format(cnt), data)
+        return compat_struct_unpack(f'!{cnt}B', data)
 
     @staticmethod
     def _len_and_data(data):
@@ -143,7 +140,7 @@ class sockssocket(socket.socket):
     def _resolve_address(self, destaddr, default, use_remote_dns):
         try:
             return socket.inet_aton(destaddr)
-        except socket.error:
+        except OSError:
             if use_remote_dns and self._proxy.remote_dns:
                 return default
             else:
@@ -185,7 +182,7 @@ class sockssocket(socket.socket):
             auth_methods.append(Socks5Auth.AUTH_USER_PASS)
 
         packet += compat_struct_pack('!B', len(auth_methods))
-        packet += compat_struct_pack('!{0}B'.format(len(auth_methods)), *auth_methods)
+        packet += compat_struct_pack(f'!{len(auth_methods)}B', *auth_methods)
 
         self.sendall(packet)
 
diff --git a/yt_dlp/update.py b/yt_dlp/update.py
index f6ac207a1c..7db260e96f 100644
--- a/yt_dlp/update.py
+++ b/yt_dlp/update.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import hashlib
 import json
 import os
@@ -111,11 +109,11 @@ def run_update(ydl):
     }
 
     def get_bin_info(bin_or_exe, version):
-        label = version_labels['%s_%s' % (bin_or_exe, version)]
+        label = version_labels[f'{bin_or_exe}_{version}']
         return next((i for i in version_info['assets'] if i['name'] == 'yt-dlp%s' % label), {})
 
     def get_sha256sum(bin_or_exe, version):
-        filename = 'yt-dlp%s' % version_labels['%s_%s' % (bin_or_exe, version)]
+        filename = 'yt-dlp%s' % version_labels[f'{bin_or_exe}_{version}']
         urlh = next(
             (i for i in version_info['assets'] if i['name'] in ('SHA2-256SUMS')),
             {}).get('browser_download_url')
@@ -136,7 +134,7 @@ def run_update(ydl):
         try:
             if os.path.exists(filename + '.old'):
                 os.remove(filename + '.old')
-        except (IOError, OSError):
+        except OSError:
             return report_unable('remove the old version')
 
         try:
@@ -147,13 +145,13 @@ def run_update(ydl):
             urlh = ydl._opener.open(url)
             newcontent = urlh.read()
             urlh.close()
-        except (IOError, OSError):
+        except OSError:
             return report_network_error('download latest version')
 
         try:
             with open(filename + '.new', 'wb') as outf:
                 outf.write(newcontent)
-        except (IOError, OSError):
+        except OSError:
             return report_permission_error(f'{filename}.new')
 
         expected_sum = get_sha256sum(variant, arch)
@@ -168,11 +166,11 @@ def run_update(ydl):
 
         try:
             os.rename(filename, filename + '.old')
-        except (IOError, OSError):
+        except OSError:
             return report_unable('move current version')
         try:
             os.rename(filename + '.new', filename)
-        except (IOError, OSError):
+        except OSError:
             report_unable('overwrite current version')
             os.rename(filename + '.old', filename)
             return
@@ -195,7 +193,7 @@ def run_update(ydl):
             urlh = ydl._opener.open(url)
             newcontent = urlh.read()
             urlh.close()
-        except (IOError, OSError):
+        except OSError:
             return report_network_error('download the latest version')
 
         expected_sum = get_sha256sum(variant, pack_type)
@@ -207,7 +205,7 @@ def run_update(ydl):
         try:
             with open(filename, 'wb') as outf:
                 outf.write(newcontent)
-        except (IOError, OSError):
+        except OSError:
             return report_unable('overwrite current version')
 
         ydl.to_screen('Updated yt-dlp to version %s; Restart yt-dlp to use the new version' % version_id)
diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 3f70b1f603..91e1a9870e 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -1,8 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import asyncio
 import atexit
 import base64
@@ -311,7 +307,7 @@ def write_json_file(obj, fn):
 def find_xpath_attr(node, xpath, key, val=None):
     """ Find the xpath xpath[@key=val] """
     assert re.match(r'^[a-zA-Z_-]+$', key)
-    expr = xpath + ('[@%s]' % key if val is None else "[@%s='%s']" % (key, val))
+    expr = xpath + ('[@%s]' % key if val is None else f"[@{key}='{val}']")
     return node.find(expr)
 
 # On python2.6 the xml.etree.ElementTree.Element methods don't support
@@ -374,7 +370,7 @@ def xpath_attr(node, xpath, key, name=None, fatal=False, default=NO_DEFAULT):
         if default is not NO_DEFAULT:
             return default
         elif fatal:
-            name = '%s[@%s]' % (xpath, key) if name is None else name
+            name = f'{xpath}[@{key}]' if name is None else name
             raise ExtractorError('Could not find XML attribute %s' % name)
         else:
             return None
@@ -443,15 +439,15 @@ def get_elements_text_and_html_by_attribute(attribute, value, html, escape_value
     attribute in the passed HTML document
     """
 
-    value_quote_optional = '' if re.match(r'''[\s"'`=<>]''', value) else '?'
+    quote = '' if re.match(r'''[\s"'`=<>]''', value) else '?'
 
     value = re.escape(value) if escape_value else value
 
-    partial_element_re = r'''(?x)
+    partial_element_re = rf'''(?x)
         <(?P<tag>[a-zA-Z0-9:._-]+)
          (?:\s(?:[^>"']|"[^"]*"|'[^']*')*)?
-         \s%(attribute)s\s*=\s*(?P<_q>['"]%(vqo)s)(?-x:%(value)s)(?P=_q)
-        ''' % {'attribute': re.escape(attribute), 'value': value, 'vqo': value_quote_optional}
+         \s{re.escape(attribute)}\s*=\s*(?P<_q>['"]{quote})(?-x:{value})(?P=_q)
+        '''
 
     for m in re.finditer(partial_element_re, html):
         content, whole = get_element_text_and_html_by_tag(m.group('tag'), html[m.start():])
@@ -644,7 +640,7 @@ def sanitize_open(filename, open_mode):
             except LockingUnsupportedError:
                 stream = open(filename, open_mode)
             return (stream, filename)
-        except (IOError, OSError) as err:
+        except OSError as err:
             if attempt or err.errno in (errno.EACCES,):
                 raise
             old_filename, filename = filename, sanitize_path(filename)
@@ -853,7 +849,7 @@ class Popen(subprocess.Popen):
         _startupinfo = None
 
     def __init__(self, *args, **kwargs):
-        super(Popen, self).__init__(*args, **kwargs, startupinfo=self._startupinfo)
+        super().__init__(*args, **kwargs, startupinfo=self._startupinfo)
 
     def communicate_or_kill(self, *args, **kwargs):
         return process_communicate_or_kill(self, *args, **kwargs)
@@ -1013,7 +1009,7 @@ class ExtractorError(YoutubeDLError):
         self.ie = ie
         self.exc_info = sys.exc_info()  # preserve original exception
 
-        super(ExtractorError, self).__init__(''.join((
+        super().__init__(''.join((
             format_field(ie, template='[%s] '),
             format_field(video_id, template='%s: '),
             msg,
@@ -1029,7 +1025,7 @@ class ExtractorError(YoutubeDLError):
 
 class UnsupportedError(ExtractorError):
     def __init__(self, url):
-        super(UnsupportedError, self).__init__(
+        super().__init__(
             'Unsupported URL: %s' % url, expected=True)
         self.url = url
 
@@ -1048,7 +1044,7 @@ class GeoRestrictedError(ExtractorError):
 
     def __init__(self, msg, countries=None, **kwargs):
         kwargs['expected'] = True
-        super(GeoRestrictedError, self).__init__(msg, **kwargs)
+        super().__init__(msg, **kwargs)
         self.countries = countries
 
 
@@ -1062,7 +1058,7 @@ class DownloadError(YoutubeDLError):
 
     def __init__(self, msg, exc_info=None):
         """ exc_info, if given, is the original exception that caused the trouble (as returned by sys.exc_info()). """
-        super(DownloadError, self).__init__(msg)
+        super().__init__(msg)
         self.exc_info = exc_info
 
 
@@ -1156,9 +1152,7 @@ class ContentTooShortError(YoutubeDLError):
     """
 
     def __init__(self, downloaded, expected):
-        super(ContentTooShortError, self).__init__(
-            'Downloaded {0} bytes, expected {1} bytes'.format(downloaded, expected)
-        )
+        super().__init__(f'Downloaded {downloaded} bytes, expected {expected} bytes')
         # Both in bytes
         self.downloaded = downloaded
         self.expected = expected
@@ -1166,7 +1160,7 @@ class ContentTooShortError(YoutubeDLError):
 
 class XAttrMetadataError(YoutubeDLError):
     def __init__(self, code=None, msg='Unknown error'):
-        super(XAttrMetadataError, self).__init__(msg)
+        super().__init__(msg)
         self.code = code
         self.msg = msg
 
@@ -1202,7 +1196,7 @@ def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
             ip_addrs = [addr for addr in addrs if addr[0] == af]
             if addrs and not ip_addrs:
                 ip_version = 'v4' if af == socket.AF_INET else 'v6'
-                raise socket.error(
+                raise OSError(
                     "No remote IP%s addresses available for connect, can't use '%s' as source address"
                     % (ip_version, source_address[0]))
             for res in ip_addrs:
@@ -1216,14 +1210,14 @@ def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
                     sock.connect(sa)
                     err = None  # Explicitly break reference cycle
                     return sock
-                except socket.error as _:
+                except OSError as _:
                     err = _
                     if sock is not None:
                         sock.close()
             if err is not None:
                 raise err
             else:
-                raise socket.error('getaddrinfo returns an empty list')
+                raise OSError('getaddrinfo returns an empty list')
         if hasattr(hc, '_create_connection'):
             hc._create_connection = _create_connection
         hc.source_address = (source_address, 0)
@@ -1235,7 +1229,7 @@ def handle_youtubedl_headers(headers):
     filtered_headers = headers
 
     if 'Youtubedl-no-compression' in filtered_headers:
-        filtered_headers = dict((k, v) for k, v in filtered_headers.items() if k.lower() != 'accept-encoding')
+        filtered_headers = {k: v for k, v in filtered_headers.items() if k.lower() != 'accept-encoding'}
         del filtered_headers['Youtubedl-no-compression']
 
     return filtered_headers
@@ -1327,14 +1321,14 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
             gz = gzip.GzipFile(fileobj=io.BytesIO(content), mode='rb')
             try:
                 uncompressed = io.BytesIO(gz.read())
-            except IOError as original_ioerror:
+            except OSError as original_ioerror:
                 # There may be junk add the end of the file
                 # See http://stackoverflow.com/q/4928560/35070 for details
                 for i in range(1, 1024):
                     try:
                         gz = gzip.GzipFile(fileobj=io.BytesIO(content[:-i]), mode='rb')
                         uncompressed = io.BytesIO(gz.read())
-                    except IOError:
+                    except OSError:
                         continue
                     break
                 else:
@@ -1474,7 +1468,7 @@ class YoutubeDLCookieJar(compat_cookiejar.MozillaCookieJar):
             if cookie.expires is None:
                 cookie.expires = 0
 
-        with io.open(filename, 'w', encoding='utf-8') as f:
+        with open(filename, 'w', encoding='utf-8') as f:
             f.write(self._HEADER)
             now = time.time()
             for cookie in self:
@@ -1530,7 +1524,7 @@ class YoutubeDLCookieJar(compat_cookiejar.MozillaCookieJar):
             return line
 
         cf = io.StringIO()
-        with io.open(filename, encoding='utf-8') as f:
+        with open(filename, encoding='utf-8') as f:
             for line in f:
                 try:
                     cf.write(prepare_line(line))
@@ -1612,8 +1606,7 @@ class YoutubeDLRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
 
         CONTENT_HEADERS = ("content-length", "content-type")
         # NB: don't use dict comprehension for python 2.6 compatibility
-        newheaders = dict((k, v) for k, v in req.headers.items()
-                          if k.lower() not in CONTENT_HEADERS)
+        newheaders = {k: v for k, v in req.headers.items() if k.lower() not in CONTENT_HEADERS}
         return compat_urllib_request.Request(
             newurl, headers=newheaders, origin_req_host=req.origin_req_host,
             unverifiable=True)
@@ -1657,7 +1650,7 @@ def parse_iso8601(date_str, delimiter='T', timezone=None):
         timezone, date_str = extract_timezone(date_str)
 
     try:
-        date_format = '%Y-%m-%d{0}%H:%M:%S'.format(delimiter)
+        date_format = f'%Y-%m-%d{delimiter}%H:%M:%S'
         dt = datetime.datetime.strptime(date_str, date_format) - timezone
         return calendar.timegm(dt.timetuple())
     except ValueError:
@@ -1839,7 +1832,7 @@ def hyphenate_date(date_str):
         return date_str
 
 
-class DateRange(object):
+class DateRange:
     """Represents a time interval between two dates"""
 
     def __init__(self, start=None, end=None):
@@ -1867,7 +1860,7 @@ class DateRange(object):
         return self.start <= date <= self.end
 
     def __str__(self):
-        return '%s - %s' % (self.start.isoformat(), self.end.isoformat())
+        return f'{self.start.isoformat()} - {self.end.isoformat()}'
 
 
 def platform_name():
@@ -2012,7 +2005,7 @@ else:
             raise LockingUnsupportedError()
 
 
-class locked_file(object):
+class locked_file:
     locked = False
 
     def __init__(self, filename, mode, block=True, encoding=None):
@@ -2039,7 +2032,7 @@ class locked_file(object):
         try:
             _lock_file(self.f, exclusive, self.block)
             self.locked = True
-        except IOError:
+        except OSError:
             self.f.close()
             raise
         if 'w' in self.mode:
@@ -2510,14 +2503,14 @@ def parse_duration(s):
 def prepend_extension(filename, ext, expected_real_ext=None):
     name, real_ext = os.path.splitext(filename)
     return (
-        '{0}.{1}{2}'.format(name, ext, real_ext)
+        f'{name}.{ext}{real_ext}'
         if not expected_real_ext or real_ext[1:] == expected_real_ext
-        else '{0}.{1}'.format(filename, ext))
+        else f'{filename}.{ext}')
 
 
 def replace_extension(filename, ext, expected_real_ext=None):
     name, real_ext = os.path.splitext(filename)
-    return '{0}.{1}'.format(
+    return '{}.{}'.format(
         name if not expected_real_ext or real_ext[1:] == expected_real_ext else filename,
         ext)
 
@@ -2700,6 +2693,7 @@ class PagedList:
 
 class OnDemandPagedList(PagedList):
     """Download pages until a page with less than maximum results"""
+
     def _getslice(self, start, end):
         for pagenum in itertools.count(start // self._pagesize):
             firstid = pagenum * self._pagesize
@@ -2740,6 +2734,7 @@ class OnDemandPagedList(PagedList):
 
 class InAdvancePagedList(PagedList):
     """PagedList with total number of pages known in advance"""
+
     def __init__(self, pagefunc, pagecount, pagesize):
         PagedList.__init__(self, pagefunc, pagesize, True)
         self._pagecount = pagecount
@@ -2994,10 +2989,10 @@ def strip_jsonp(code):
 def js_to_json(code, vars={}):
     # vars is a dict of var, val pairs to substitute
     COMMENT_RE = r'/\*(?:(?!\*/).)*?\*/|//[^\n]*\n'
-    SKIP_RE = r'\s*(?:{comment})?\s*'.format(comment=COMMENT_RE)
+    SKIP_RE = fr'\s*(?:{COMMENT_RE})?\s*'
     INTEGER_TABLE = (
-        (r'(?s)^(0[xX][0-9a-fA-F]+){skip}:?$'.format(skip=SKIP_RE), 16),
-        (r'(?s)^(0+[0-7]+){skip}:?$'.format(skip=SKIP_RE), 8),
+        (fr'(?s)^(0[xX][0-9a-fA-F]+){SKIP_RE}:?$', 16),
+        (fr'(?s)^(0+[0-7]+){SKIP_RE}:?$', 8),
     )
 
     def fix_kv(m):
@@ -3518,7 +3513,7 @@ def dfxp2srt(dfxp_data):
     styles = {}
     default_style = {}
 
-    class TTMLPElementParser(object):
+    class TTMLPElementParser:
         _out = ''
         _unclosed_elements = []
         _applied_styles = []
@@ -3703,7 +3698,7 @@ def _configuration_args(main_key, argdict, exe, keys=None, default=[], use_compa
     return cli_configuration_args(argdict, keys, default, use_compat)
 
 
-class ISO639Utils(object):
+class ISO639Utils:
     # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
     _lang_map = {
         'aa': 'aar',
@@ -3908,7 +3903,7 @@ class ISO639Utils(object):
                 return short_name
 
 
-class ISO3166Utils(object):
+class ISO3166Utils:
     # From http://data.okfn.org/data/core/country-list
     _country_map = {
         'AF': 'Afghanistan',
@@ -4168,7 +4163,7 @@ class ISO3166Utils(object):
         return cls._country_map.get(code.upper())
 
 
-class GeoUtils(object):
+class GeoUtils:
     # Major IPv4 address blocks per country
     _country_ip_map = {
         'AD': '46.172.224.0/19',
@@ -4605,7 +4600,7 @@ def decode_png(png_data):
     header = png_data[8:]
 
     if png_data[:8] != b'\x89PNG\x0d\x0a\x1a\x0a' or header[4:8] != b'IHDR':
-        raise IOError('Not a valid PNG file.')
+        raise OSError('Not a valid PNG file.')
 
     int_map = {1: '>B', 2: '>H', 4: '>I'}
     unpack_integer = lambda x: compat_struct_unpack(int_map[len(x)], x)[0]
@@ -4642,7 +4637,7 @@ def decode_png(png_data):
             idat += chunk['data']
 
     if not idat:
-        raise IOError('Unable to read PNG data.')
+        raise OSError('Unable to read PNG data.')
 
     decompressed_data = bytearray(zlib.decompress(idat))
 
@@ -4730,7 +4725,7 @@ def write_xattr(path, key, value):
 
         try:
             setxattr(path, key, value)
-        except EnvironmentError as e:
+        except OSError as e:
             raise XAttrMetadataError(e.errno, e.strerror)
 
     except ImportError:
@@ -4744,7 +4739,7 @@ def write_xattr(path, key, value):
             try:
                 with open(ads_fn, 'wb') as f:
                     f.write(value)
-            except EnvironmentError as e:
+            except OSError as e:
                 raise XAttrMetadataError(e.errno, e.strerror)
         else:
             user_has_setfattr = check_executable('setfattr', ['--version'])
@@ -4767,7 +4762,7 @@ def write_xattr(path, key, value):
                 try:
                     p = Popen(
                         cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
-                except EnvironmentError as e:
+                except OSError as e:
                     raise XAttrMetadataError(e.errno, e.strerror)
                 stdout, stderr = p.communicate_or_kill()
                 stderr = stderr.decode('utf-8', 'replace')
@@ -4923,7 +4918,7 @@ def make_dir(path, to_screen=None):
         if dn and not os.path.exists(dn):
             os.makedirs(dn)
         return True
-    except (OSError, IOError) as err:
+    except OSError as err:
         if callable(to_screen) is not None:
             to_screen('unable to create directory ' + error_to_compat_str(err))
         return False
@@ -5155,7 +5150,7 @@ def scale_thumbnails_to_max_format_width(formats, thumbnails, url_width_re):
     """
     _keys = ('width', 'height')
     max_dimensions = max(
-        [tuple(format.get(k) or 0 for k in _keys) for format in formats],
+        (tuple(format.get(k) or 0 for k in _keys) for format in formats),
         default=(0, 0))
     if not max_dimensions[0]:
         return thumbnails
@@ -5220,7 +5215,7 @@ class Config:
     def read_file(filename, default=[]):
         try:
             optionf = open(filename)
-        except IOError:
+        except OSError:
             return default  # silently skip if file is not present
         try:
             # FIXME: https://github.com/ytdl-org/youtube-dl/commit/dfe5fa49aed02cf36ba9f743b11b0903554b5e56
@@ -5232,7 +5227,7 @@ class Config:
 
     @staticmethod
     def hide_login_info(opts):
-        PRIVATE_OPTS = set(['-p', '--password', '-u', '--username', '--video-password', '--ap-password', '--ap-username'])
+        PRIVATE_OPTS = {'-p', '--password', '-u', '--username', '--video-password', '--ap-password', '--ap-username'}
         eqre = re.compile('^(?P<key>' + ('|'.join(re.escape(po) for po in PRIVATE_OPTS)) + ')=.+$')
 
         def _scrub_eq(o):
diff --git a/yt_dlp/webvtt.py b/yt_dlp/webvtt.py
index c78078f17d..e0d7f67436 100644
--- a/yt_dlp/webvtt.py
+++ b/yt_dlp/webvtt.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals, print_function, division
-
 """
 A partial parser for WebVTT segments. Interprets enough of the WebVTT stream
 to be able to assemble a single stand-alone subtitle file, suitably adjusting
@@ -20,7 +17,7 @@ from .compat import (
 )
 
 
-class _MatchParser(object):
+class _MatchParser:
     """
     An object that maintains the current parsing position and allows
     conveniently advancing it as syntax elements are successfully parsed.
@@ -69,7 +66,7 @@ class _MatchChildParser(_MatchParser):
     """
 
     def __init__(self, parent):
-        super(_MatchChildParser, self).__init__(parent._data)
+        super().__init__(parent._data)
         self.__parent = parent
         self._pos = parent._pos
 
@@ -83,7 +80,7 @@ class _MatchChildParser(_MatchParser):
 
 class ParseError(Exception):
     def __init__(self, parser):
-        super(ParseError, self).__init__("Parse error at position %u (near %r)" % (
+        super().__init__("Parse error at position %u (near %r)" % (
             parser._pos, parser._data[parser._pos:parser._pos + 20]
         ))
 
@@ -126,7 +123,7 @@ def _format_ts(ts):
     return '%02u:%02u:%02u.%03u' % timetuple_from_msec(int((ts + 45) // 90))
 
 
-class Block(object):
+class Block:
     """
     An abstract WebVTT block.
     """
diff --git a/ytdlp_plugins/extractor/sample.py b/ytdlp_plugins/extractor/sample.py
index d99b7ca331..82c0af459c 100644
--- a/ytdlp_plugins/extractor/sample.py
+++ b/ytdlp_plugins/extractor/sample.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 # ⚠ Don't use relative imports
 from yt_dlp.extractor.common import InfoExtractor
 
diff --git a/ytdlp_plugins/postprocessor/sample.py b/ytdlp_plugins/postprocessor/sample.py
index 6ba49266e0..4563e1c116 100644
--- a/ytdlp_plugins/postprocessor/sample.py
+++ b/ytdlp_plugins/postprocessor/sample.py
@@ -1,5 +1,3 @@
-# coding: utf-8
-
 # ⚠ Don't use relative imports
 from yt_dlp.postprocessor.common import PostProcessor