Merge branch 'master' into dropout-show-fix

.github/workflows/build.yml

@@ -237,7 +237,7 @@ jobs:
   macos:
     needs: process
     if: inputs.macos
-    runs-on: macos-11
+    runs-on: macos-12
 
     steps:
       - uses: actions/checkout@v4
@@ -260,11 +260,23 @@ jobs:
               --pre -d curl_cffi_whls \
               -r requirements.txt
           done
+          ( # Overwrite x86_64-only libs with fat/universal2 libs or else Pyinstaller will do the opposite
+            # See https://github.com/yt-dlp/yt-dlp/pull/10069
+            cd curl_cffi_whls
+            mkdir -p curl_cffi/.dylibs
+            python_libdir=$(python3 -c 'import sys; from pathlib import Path; print(Path(sys.path[1]).parent)')
+            for dylib in lib{ssl,crypto}.3.dylib; do
+              cp "${python_libdir}/${dylib}" "curl_cffi/.dylibs/${dylib}"
+              for wheel in curl_cffi*macos*x86_64.whl; do
+                zip "${wheel}" "curl_cffi/.dylibs/${dylib}"
+              done
+            done
+          )
           python3 -m delocate.cmd.delocate_fuse curl_cffi_whls/curl_cffi*.whl -w curl_cffi_universal2
           python3 -m delocate.cmd.delocate_fuse curl_cffi_whls/cffi*.whl -w curl_cffi_universal2
           cd curl_cffi_universal2
-          for wheel in *cffi*.whl; do mv -n -- "${wheel}" "${wheel/x86_64/universal2}"; done
-          python3 -m pip install -U --user *cffi*.whl
+          for wheel in ./*cffi*.whl; do mv -n -- "${wheel}" "${wheel/x86_64/universal2}"; done
+          python3 -m pip install -U --user ./*cffi*.whl
 
       - name: Prepare
         run: |
@@ -311,7 +323,7 @@ jobs:
           # Hack to get the latest patch version. Uncomment if needed
           #brew install python@3.10
           #export PYTHON_VERSION=$( $(brew --prefix)/opt/python@3.10/bin/python3 --version | cut -d ' ' -f 2 )
-          curl https://www.python.org/ftp/python/${PYTHON_VERSION}/python-${PYTHON_VERSION}-macos11.pkg -o "python.pkg"
+          curl "https://www.python.org/ftp/python/${PYTHON_VERSION}/python-${PYTHON_VERSION}-macos11.pkg" -o "python.pkg"
           sudo installer -pkg python.pkg -target /
           python3 --version
       - name: Install Requirements
@@ -361,7 +373,7 @@ jobs:
         run: | # Custom pyinstaller built with https://github.com/yt-dlp/pyinstaller-builds
           python devscripts/install_deps.py -o --include build
           python devscripts/install_deps.py --include curl-cffi
-          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/x86_64/pyinstaller-5.8.0-py3-none-any.whl"
+          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/x86_64/pyinstaller-6.7.0-py3-none-any.whl"
 
       - name: Prepare
         run: |
@@ -421,7 +433,7 @@ jobs:
         run: |
           python devscripts/install_deps.py -o --include build
           python devscripts/install_deps.py
-          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/i686/pyinstaller-5.8.0-py3-none-any.whl"
+          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/i686/pyinstaller-6.7.0-py3-none-any.whl"
 
       - name: Prepare
         run: |
@@ -475,8 +487,8 @@ jobs:
         run: |
           cd ./artifact/
           # make sure SHA sums are also printed to stdout
-          sha256sum * | tee ../SHA2-256SUMS
-          sha512sum * | tee ../SHA2-512SUMS
+          sha256sum -- * | tee ../SHA2-256SUMS
+          sha512sum -- * | tee ../SHA2-512SUMS
 
       - name: Make Update spec
         run: |

CONTRIBUTING.md

@@ -266,7 +266,7 @@ After you have ensured this site is distributing its content legally, you can fo
     $ hatch fmt --check
     ```
 
-    You can use `hatch fmt` to automatically fix problems.
+    You can use `hatch fmt` to automatically fix problems. Rules that the linter/formatter enforces should not be disabled with `# noqa` unless a maintainer requests it. The only exception allowed is for old/printf-style string formatting in GraphQL query templates (use `# noqa: UP031`).
 
 1. Make sure your code works under all [Python](https://www.python.org/) versions supported by yt-dlp, namely CPython and PyPy for Python 3.8 and above. Backward compatibility is not required for even older versions of Python.
 1. When the tests pass, [add](https://git-scm.com/docs/git-add) the new files, [commit](https://git-scm.com/docs/git-commit) them and [push](https://git-scm.com/docs/git-push) the result, like this:

README.md

@@ -262,7 +262,7 @@ You can also run `make yt-dlp` instead to compile only the binary without updati
 
 ### Standalone Py2Exe Builds (Windows)
 
-While we provide the option to build with [py2exe](https://www.py2exe.org), it is recommended to build [using PyInstaller](#standalone-pyinstaller-builds) instead since the py2exe builds **cannot contain `pycryptodomex`/`certifi` and need VC++14** on the target computer to run.
+While we provide the option to build with [py2exe](https://www.py2exe.org), it is recommended to build [using PyInstaller](#standalone-pyinstaller-builds) instead since the py2exe builds **cannot contain `pycryptodomex`/`certifi`/`requests` and need VC++14** on the target computer to run.
 
 If you wish to build it anyway, install Python (if it is not already installed) and you can run the following commands:
 

bundle/py2exe.py

@@ -42,9 +42,9 @@ def main():
                 # py2exe cannot import Crypto
                 'Crypto',
                 'Cryptodome',
-                # py2exe appears to confuse this with our socks library.
-                # We don't use pysocks and urllib3.contrib.socks would fail to import if tried.
-                'urllib3.contrib.socks'
+                # requests >=2.32.0 breaks py2exe builds due to certifi dependency
+                'requests',
+                'urllib3',
             ],
             'dll_excludes': ['w9xpopen.exe', 'crypt32.dll'],
             # Modules that are only imported dynamically must be added here

bundle/pyinstaller.py

@@ -68,7 +68,7 @@ def exe(onedir):
         'dist/',
         onedir and f'{name}/',
         name,
-        OS_NAME == 'win32' and '.exe'
+        OS_NAME == 'win32' and '.exe',
     )))
 
 
@@ -113,7 +113,7 @@ def windows_set_version(exe, version):
         ),
         kids=[
             StringFileInfo([StringTable('040904B0', [
-                StringStruct('Comments', 'yt-dlp%s Command Line Interface' % suffix),
+                StringStruct('Comments', f'yt-dlp{suffix} Command Line Interface'),
                 StringStruct('CompanyName', 'https://github.com/yt-dlp'),
                 StringStruct('FileDescription', 'yt-dlp%s' % (MACHINE and f' ({MACHINE})')),
                 StringStruct('FileVersion', version),
@@ -123,8 +123,8 @@ def windows_set_version(exe, version):
                 StringStruct('ProductName', f'yt-dlp{suffix}'),
                 StringStruct(
                     'ProductVersion', f'{version}{suffix} on Python {platform.python_version()}'),
-            ])]), VarFileInfo([VarStruct('Translation', [0, 1200])])
-        ]
+            ])]), VarFileInfo([VarStruct('Translation', [0, 1200])]),
+        ],
     ))
 
 

devscripts/bash-completion.py

@@ -9,8 +9,8 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 import yt_dlp
 
-BASH_COMPLETION_FILE = "completions/bash/yt-dlp"
-BASH_COMPLETION_TEMPLATE = "devscripts/bash-completion.in"
+BASH_COMPLETION_FILE = 'completions/bash/yt-dlp'
+BASH_COMPLETION_TEMPLATE = 'devscripts/bash-completion.in'
 
 
 def build_completion(opt_parser):
@@ -21,9 +21,9 @@ def build_completion(opt_parser):
             opts_flag.append(option.get_opt_string())
     with open(BASH_COMPLETION_TEMPLATE) as f:
         template = f.read()
-    with open(BASH_COMPLETION_FILE, "w") as f:
+    with open(BASH_COMPLETION_FILE, 'w') as f:
         # just using the special char
-        filled_template = template.replace("{{flags}}", " ".join(opts_flag))
+        filled_template = template.replace('{{flags}}', ' '.join(opts_flag))
         f.write(filled_template)
 
 

devscripts/make_changelog.py

@@ -223,10 +223,10 @@ class Changelog:
 
         return message if not sep else f'{message}{sep}{rest}'
 
-    def _format_message_link(self, message, hash):
-        assert message or hash, 'Improperly defined commit message or override'
-        message = message if message else hash[:HASH_LENGTH]
-        return f'[{message}]({self.repo_url}/commit/{hash})' if hash else message
+    def _format_message_link(self, message, commit_hash):
+        assert message or commit_hash, 'Improperly defined commit message or override'
+        message = message if message else commit_hash[:HASH_LENGTH]
+        return f'[{message}]({self.repo_url}/commit/{commit_hash})' if commit_hash else message
 
     def _format_issues(self, issues):
         return ', '.join(f'[#{issue}]({self.repo_url}/issues/{issue})' for issue in issues)
@@ -356,7 +356,7 @@ class CommitRange:
                 logger.info(f'CHANGE {self._commits[commit.hash]} -> {commit}')
                 self._commits[commit.hash] = commit
 
-        self._commits = {key: value for key, value in reversed(self._commits.items())}
+        self._commits = dict(reversed(self._commits.items()))
 
     def groups(self):
         group_dict = defaultdict(list)

devscripts/make_readme.py

@@ -51,7 +51,7 @@ PATCHES = (
     ),
     (   # Headings
         r'(?m)^  (\w.+\n)(    (?=\w))?',
-        r'## \1'
+        r'## \1',
     ),
     (   # Fixup `--date` formatting
         rf'(?m)(    --date DATE.+({delim}[^\[]+)*)\[.+({delim}.+)*$',
@@ -61,26 +61,26 @@ PATCHES = (
     ),
     (   # Do not split URLs
         rf'({delim[:-1]})? (?P<label>\[\S+\] )?(?P<url>https?({delim})?:({delim})?/({delim})?/(({delim})?\S+)+)\s',
-        lambda mobj: ''.join((delim, mobj.group('label') or '', re.sub(r'\s+', '', mobj.group('url')), '\n'))
+        lambda mobj: ''.join((delim, mobj.group('label') or '', re.sub(r'\s+', '', mobj.group('url')), '\n')),
     ),
     (   # Do not split "words"
         rf'(?m)({delim}\S+)+$',
-        lambda mobj: ''.join((delim, mobj.group(0).replace(delim, '')))
+        lambda mobj: ''.join((delim, mobj.group(0).replace(delim, ''))),
     ),
     (   # Allow overshooting last line
         rf'(?m)^(?P<prev>.+)${delim}(?P<current>.+)$(?!{delim})',
         lambda mobj: (mobj.group().replace(delim, ' ')
                       if len(mobj.group()) - len(delim) + 1 <= max_width + ALLOWED_OVERSHOOT
-                      else mobj.group())
+                      else mobj.group()),
     ),
     (   # Avoid newline when a space is available b/w switch and description
         DISABLE_PATCH,  # This creates issues with prepare_manpage
         r'(?m)^(\s{4}-.{%d})(%s)' % (switch_col_width - 6, delim),
-        r'\1 '
+        r'\1 ',
     ),
     (   # Replace brackets with a Markdown link
         r'SponsorBlock API \((http.+)\)',
-        r'[SponsorBlock API](\1)'
+        r'[SponsorBlock API](\1)',
     ),
 )
 

devscripts/set-variant.py

@@ -30,7 +30,7 @@ def property_setter(name, value):
 opts = parse_options()
 transform = compose_functions(
     property_setter('VARIANT', opts.variant),
-    property_setter('UPDATE_HINT', opts.update_message)
+    property_setter('UPDATE_HINT', opts.update_message),
 )
 
 write_file(VERSION_FILE, transform(read_file(VERSION_FILE)))

devscripts/update-version.py

@@ -24,7 +24,7 @@ def get_new_version(version, revision):
     else:
         old_version = read_version().split('.')
         if version.split('.') == old_version[:3]:
-            revision = str(int((old_version + [0])[3]) + 1)
+            revision = str(int(([*old_version, 0])[3]) + 1)
 
     return f'{version}.{revision}' if revision else version
 

devscripts/zsh-completion.py

@@ -9,15 +9,15 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 import yt_dlp
 
-ZSH_COMPLETION_FILE = "completions/zsh/_yt-dlp"
-ZSH_COMPLETION_TEMPLATE = "devscripts/zsh-completion.in"
+ZSH_COMPLETION_FILE = 'completions/zsh/_yt-dlp'
+ZSH_COMPLETION_TEMPLATE = 'devscripts/zsh-completion.in'
 
 
 def build_completion(opt_parser):
     opts = [opt for group in opt_parser.option_groups
             for opt in group.option_list]
-    opts_file = [opt for opt in opts if opt.metavar == "FILE"]
-    opts_dir = [opt for opt in opts if opt.metavar == "DIR"]
+    opts_file = [opt for opt in opts if opt.metavar == 'FILE']
+    opts_dir = [opt for opt in opts if opt.metavar == 'DIR']
 
     fileopts = []
     for opt in opts_file:
@@ -38,11 +38,11 @@ def build_completion(opt_parser):
     with open(ZSH_COMPLETION_TEMPLATE) as f:
         template = f.read()
 
-    template = template.replace("{{fileopts}}", "|".join(fileopts))
-    template = template.replace("{{diropts}}", "|".join(diropts))
-    template = template.replace("{{flags}}", " ".join(flags))
+    template = template.replace('{{fileopts}}', '|'.join(fileopts))
+    template = template.replace('{{diropts}}', '|'.join(diropts))
+    template = template.replace('{{flags}}', ' '.join(flags))
 
-    with open(ZSH_COMPLETION_FILE, "w") as f:
+    with open(ZSH_COMPLETION_FILE, 'w') as f:
         f.write(template)
 
 

pyproject.toml

@@ -46,7 +46,7 @@ dependencies = [
     "certifi",
     "mutagen",
     "pycryptodomex",
-    "requests>=2.31.0,<3",
+    "requests>=2.32.2,<3",
     "urllib3>=1.26.17,<3",
     "websockets>=12.0",
 ]
@@ -62,7 +62,7 @@ build = [
     "build",
     "hatchling",
     "pip",
-    "setuptools>=66.1.0,<70",
+    "setuptools",
     "wheel",
 ]
 dev = [
@@ -78,12 +78,10 @@ test = [
     "pytest~=8.1",
 ]
 pyinstaller = [
-    "pyinstaller>=6.3; sys_platform!='darwin'",
-    "pyinstaller==5.13.2; sys_platform=='darwin'",  # needed for curl_cffi
+    "pyinstaller>=6.7.0",  # for compat with setuptools>=70
 ]
 py2exe = [
     "py2exe>=0.12",
-    "requests==2.31.*",
 ]
 
 [project.urls]
@@ -185,21 +183,84 @@ line-length = 120
 
 [tool.ruff.lint]
 ignore = [
-    "E402",  # module level import not at top of file
-    "E501",  # line too long
-    "E731",  # do not assign a lambda expression, use a def
-    "E741",  # ambiguous variable name
+    "E402",    # module-import-not-at-top-of-file
+    "E501",    # line-too-long
+    "E731",    # lambda-assignment
+    "E741",    # ambiguous-variable-name
+    "UP036",   # outdated-version-block
+    "B006",    # mutable-argument-default
+    "B008",    # function-call-in-default-argument
+    "B011",    # assert-false
+    "B017",    # assert-raises-exception
+    "B023",    # function-uses-loop-variable (false positives)
+    "B028",    # no-explicit-stacklevel
+    "B904",    # raise-without-from-inside-except
+    "C401",    # unnecessary-generator-set
+    "C402",    # unnecessary-generator-dict
+    "PIE790",  # unnecessary-placeholder
+    "SIM102",  # collapsible-if
+    "SIM108",  # if-else-block-instead-of-if-exp
+    "SIM112",  # uncapitalized-environment-variables
+    "SIM113",  # enumerate-for-loop
+    "SIM114",  # if-with-same-arms
+    "SIM115",  # open-file-with-context-handler
+    "SIM117",  # multiple-with-statements
+    "SIM223",  # expr-and-false
+    "SIM300",  # yoda-conditions
+    "TD001",   # invalid-todo-tag
+    "TD002",   # missing-todo-author
+    "TD003",   # missing-todo-link
+    "PLE0604", # invalid-all-object (false positives)
+    "PLW0603", # global-statement
+    "PLW1510", # subprocess-run-without-check
+    "PLW2901", # redefined-loop-name
+    "RUF001",  # ambiguous-unicode-character-string
+    "RUF012",  # mutable-class-default
+    "RUF100",  # unused-noqa (flake8 has slightly different behavior)
 ]
 select = [
-    "E",  # pycodestyle errors
-    "W",  # pycodestyle warnings
-    "F",  # pyflakes
-    "I",  # import order
+    "E",      # pycodestyle Error
+    "W",      # pycodestyle Warning
+    "F",      # Pyflakes
+    "I",      # isort
+    "Q",      # flake8-quotes
+    "N803",   # invalid-argument-name
+    "N804",   # invalid-first-argument-name-for-class-method
+    "UP",     # pyupgrade
+    "B",      # flake8-bugbear
+    "A",      # flake8-builtins
+    "COM",    # flake8-commas
+    "C4",     # flake8-comprehensions
+    "FA",     # flake8-future-annotations
+    "ISC",    # flake8-implicit-str-concat
+    "ICN003", # banned-import-from
+    "PIE",    # flake8-pie
+    "T20",    # flake8-print
+    "RSE",    # flake8-raise
+    "RET504", # unnecessary-assign
+    "SIM",    # flake8-simplify
+    "TID251", # banned-api
+    "TD",     # flake8-todos
+    "PLC",    # Pylint Convention
+    "PLE",    # Pylint Error
+    "PLW",    # Pylint Warning
+    "RUF",    # Ruff-specific rules
 ]
 
 [tool.ruff.lint.per-file-ignores]
-"devscripts/lazy_load_template.py" = ["F401"]
-"!yt_dlp/extractor/**.py" = ["I"]
+"devscripts/lazy_load_template.py" = [
+    "F401",   # unused-import
+]
+"!yt_dlp/extractor/**.py" = [
+    "I",      # isort
+    "ICN003", # banned-import-from
+    "T20",    # flake8-print
+    "A002",   # builtin-argument-shadowing
+    "C408",   # unnecessary-collection-call
+]
+"yt_dlp/jsinterp.py" = [
+    "UP031",  # printf-string-formatting
+]
 
 [tool.ruff.lint.isort]
 known-first-party = [
@@ -209,6 +270,50 @@ known-first-party = [
 ]
 relative-imports-order = "closest-to-furthest"
 
+[tool.ruff.lint.flake8-quotes]
+docstring-quotes = "double"
+multiline-quotes = "single"
+inline-quotes = "single"
+avoid-escape = false
+
+[tool.ruff.lint.pep8-naming]
+classmethod-decorators = [
+    "yt_dlp.utils.classproperty",
+]
+
+[tool.ruff.lint.flake8-import-conventions]
+banned-from = [
+    "base64",
+    "datetime",
+    "functools",
+    "glob",
+    "hashlib",
+    "itertools",
+    "json",
+    "math",
+    "os",
+    "pathlib",
+    "random",
+    "re",
+    "string",
+    "sys",
+    "time",
+    "urllib",
+    "uuid",
+    "xml",
+]
+
+[tool.ruff.lint.flake8-tidy-imports.banned-api]
+"yt_dlp.compat.compat_str".msg = "Use `str` instead."
+"yt_dlp.compat.compat_b64decode".msg = "Use `base64.b64decode` instead."
+"yt_dlp.compat.compat_urlparse".msg = "Use `urllib.parse` instead."
+"yt_dlp.compat.compat_parse_qs".msg = "Use `urllib.parse.parse_qs` instead."
+"yt_dlp.compat.compat_urllib_parse_unquote".msg = "Use `urllib.parse.unquote` instead."
+"yt_dlp.compat.compat_urllib_parse_urlencode".msg = "Use `urllib.parse.urlencode` instead."
+"yt_dlp.compat.compat_urllib_parse_urlparse".msg = "Use `urllib.parse.urlparse` instead."
+"yt_dlp.compat.compat_shlex_quote".msg = "Use `yt_dlp.utils.shell_quote` instead."
+"yt_dlp.utils.error_to_compat_str".msg = "Use `str` instead."
+
 [tool.autopep8]
 max_line_length = 120
 recursive = true

test/conftest.py

@@ -22,8 +22,8 @@ def handler(request):
     class HandlerWrapper(handler):
         RH_KEY = handler.RH_KEY
 
-        def __init__(self, *args, **kwargs):
-            super().__init__(logger=FakeLogger, *args, **kwargs)
+        def __init__(self, **kwargs):
+            super().__init__(logger=FakeLogger, **kwargs)
 
     return HandlerWrapper
 
@@ -54,11 +54,11 @@ def skip_handlers_if(request, handler):
 
 def pytest_configure(config):
     config.addinivalue_line(
-        "markers", "skip_handler(handler): skip test for the given handler",
+        'markers', 'skip_handler(handler): skip test for the given handler',
     )
     config.addinivalue_line(
-        "markers", "skip_handler_if(handler): skip test for the given handler if condition is true"
+        'markers', 'skip_handler_if(handler): skip test for the given handler if condition is true',
     )
     config.addinivalue_line(
-        "markers", "skip_handlers_if(handler): skip test for handlers when the condition is true"
+        'markers', 'skip_handlers_if(handler): skip test for handlers when the condition is true',
     )

test/helper.py

@@ -16,8 +16,8 @@ if 'pytest' in sys.modules:
     import pytest
     is_download_test = pytest.mark.download
 else:
-    def is_download_test(testClass):
-        return testClass
+    def is_download_test(test_class):
+        return test_class
 
 
 def get_params(override=None):
@@ -45,10 +45,10 @@ def try_rm(filename):
 
 
 def report_warning(message, *args, **kwargs):
-    '''
+    """
     Print the message to stderr, it will be prefixed with 'WARNING:'
     If stderr is a tty file the 'WARNING:' will be colored
-    '''
+    """
     if sys.stderr.isatty() and compat_os_name != 'nt':
         _msg_header = '\033[0;33mWARNING:\033[0m'
     else:
@@ -138,15 +138,14 @@ def expect_value(self, got, expected, field):
     elif isinstance(expected, list) and isinstance(got, list):
         self.assertEqual(
             len(expected), len(got),
-            'Expect a list of length %d, but got a list of length %d for field %s' % (
-                len(expected), len(got), field))
+            f'Expect a list of length {len(expected)}, but got a list of length {len(got)} for field {field}')
         for index, (item_got, item_expected) in enumerate(zip(got, expected)):
             type_got = type(item_got)
             type_expected = type(item_expected)
             self.assertEqual(
                 type_expected, type_got,
-                'Type mismatch for list item at index %d for field %s, expected %r, got %r' % (
-                    index, field, type_expected, type_got))
+                f'Type mismatch for list item at index {index} for field {field}, '
+                f'expected {type_expected!r}, got {type_got!r}')
             expect_value(self, item_got, item_expected, field)
     else:
         if isinstance(expected, str) and expected.startswith('md5:'):
@@ -224,7 +223,7 @@ def sanitize_got_info_dict(got_dict):
         test_info_dict.pop('display_id')
 
     # Remove deprecated fields
-    for old in YoutubeDL._deprecated_multivalue_fields.keys():
+    for old in YoutubeDL._deprecated_multivalue_fields:
         test_info_dict.pop(old, None)
 
     # release_year may be generated from release_date
@@ -246,11 +245,11 @@ def expect_info_dict(self, got_dict, expected_dict):
         if expected_dict.get('ext'):
             mandatory_fields.extend(('url', 'ext'))
         for key in mandatory_fields:
-            self.assertTrue(got_dict.get(key), 'Missing mandatory field %s' % key)
+            self.assertTrue(got_dict.get(key), f'Missing mandatory field {key}')
     # Check for mandatory fields that are automatically set by YoutubeDL
     if got_dict.get('_type', 'video') == 'video':
         for key in ['webpage_url', 'extractor', 'extractor_key']:
-            self.assertTrue(got_dict.get(key), 'Missing field: %s' % key)
+            self.assertTrue(got_dict.get(key), f'Missing field: {key}')
 
     test_info_dict = sanitize_got_info_dict(got_dict)
 
@@ -258,7 +257,7 @@ def expect_info_dict(self, got_dict, expected_dict):
     if missing_keys:
         def _repr(v):
             if isinstance(v, str):
-                return "'%s'" % v.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n')
+                return "'{}'".format(v.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n'))
             elif isinstance(v, type):
                 return v.__name__
             else:
@@ -275,8 +274,7 @@ def expect_info_dict(self, got_dict, expected_dict):
         write_string(info_dict_str.replace('\n', '\n        '), out=sys.stderr)
         self.assertFalse(
             missing_keys,
-            'Missing keys in test definition: %s' % (
-                ', '.join(sorted(missing_keys))))
+            'Missing keys in test definition: {}'.format(', '.join(sorted(missing_keys))))
 
 
 def assertRegexpMatches(self, text, regexp, msg=None):
@@ -285,9 +283,9 @@ def assertRegexpMatches(self, text, regexp, msg=None):
     else:
         m = re.match(regexp, text)
         if not m:
-            note = 'Regexp didn\'t match: %r not found' % (regexp)
+            note = f'Regexp didn\'t match: {regexp!r} not found'
             if len(text) < 1000:
-                note += ' in %r' % text
+                note += f' in {text!r}'
             if msg is None:
                 msg = note
             else:
@@ -310,7 +308,7 @@ def assertLessEqual(self, got, expected, msg=None):
 
 
 def assertEqual(self, got, expected, msg=None):
-    if not (got == expected):
+    if got != expected:
         if msg is None:
             msg = f'{got!r} not equal to {expected!r}'
         self.assertTrue(got == expected, msg)

test/test_InfoExtractor.py

@@ -262,19 +262,19 @@ class TestInfoExtractor(unittest.TestCase):
                 ''',
                 {
                     'chapters': [
-                        {"title": "Explosie Turnhout", "start_time": 70, "end_time": 440},
-                        {"title": "Jaarwisseling", "start_time": 440, "end_time": 1179},
-                        {"title": "Natuurbranden Colorado", "start_time": 1179, "end_time": 1263},
-                        {"title": "Klimaatverandering", "start_time": 1263, "end_time": 1367},
-                        {"title": "Zacht weer", "start_time": 1367, "end_time": 1383},
-                        {"title": "Financiële balans", "start_time": 1383, "end_time": 1484},
-                        {"title": "Club Brugge", "start_time": 1484, "end_time": 1575},
-                        {"title": "Mentale gezondheid bij topsporters", "start_time": 1575, "end_time": 1728},
-                        {"title": "Olympische Winterspelen", "start_time": 1728, "end_time": 1873},
-                        {"title": "Sober oudjaar in Nederland", "start_time": 1873, "end_time": 2079.23}
+                        {'title': 'Explosie Turnhout', 'start_time': 70, 'end_time': 440},
+                        {'title': 'Jaarwisseling', 'start_time': 440, 'end_time': 1179},
+                        {'title': 'Natuurbranden Colorado', 'start_time': 1179, 'end_time': 1263},
+                        {'title': 'Klimaatverandering', 'start_time': 1263, 'end_time': 1367},
+                        {'title': 'Zacht weer', 'start_time': 1367, 'end_time': 1383},
+                        {'title': 'Financiële balans', 'start_time': 1383, 'end_time': 1484},
+                        {'title': 'Club Brugge', 'start_time': 1484, 'end_time': 1575},
+                        {'title': 'Mentale gezondheid bij topsporters', 'start_time': 1575, 'end_time': 1728},
+                        {'title': 'Olympische Winterspelen', 'start_time': 1728, 'end_time': 1873},
+                        {'title': 'Sober oudjaar in Nederland', 'start_time': 1873, 'end_time': 2079.23},
                     ],
-                    'title': 'Het journaal - Aflevering 365 (Seizoen 2021)'
-                }, {}
+                    'title': 'Het journaal - Aflevering 365 (Seizoen 2021)',
+                }, {},
             ),
             (
                 # test multiple thumbnails in a list
@@ -301,13 +301,13 @@ class TestInfoExtractor(unittest.TestCase):
                     'thumbnails': [{'url': 'https://www.rainews.it/cropgd/640x360/dl/img/2021/12/30/1640886376927_GettyImages.jpg'}],
                 },
                 {},
-            )
+            ),
         ]
         for html, expected_dict, search_json_ld_kwargs in _TESTS:
             expect_dict(
                 self,
                 self.ie._search_json_ld(html, None, **search_json_ld_kwargs),
-                expected_dict
+                expected_dict,
             )
 
     def test_download_json(self):
@@ -366,7 +366,7 @@ class TestInfoExtractor(unittest.TestCase):
                     'height': 740,
                     'tbr': 1500,
                 }],
-                'thumbnail': '//pics.r18.com/digital/amateur/mgmr105/mgmr105jp.jpg'
+                'thumbnail': '//pics.r18.com/digital/amateur/mgmr105/mgmr105jp.jpg',
             })
 
         # from https://www.csfd.cz/
@@ -419,9 +419,9 @@ class TestInfoExtractor(unittest.TestCase):
                     'height': 1080,
                 }],
                 'subtitles': {
-                    'cs': [{'url': 'https://video.csfd.cz/files/subtitles/163/344/163344115_4c388b.srt'}]
+                    'cs': [{'url': 'https://video.csfd.cz/files/subtitles/163/344/163344115_4c388b.srt'}],
                 },
-                'thumbnail': 'https://img.csfd.cz/files/images/film/video/preview/163/344/163344118_748d20.png?h360'
+                'thumbnail': 'https://img.csfd.cz/files/images/film/video/preview/163/344/163344118_748d20.png?h360',
             })
 
         # from https://tamasha.com/v/Kkdjw
@@ -452,7 +452,7 @@ class TestInfoExtractor(unittest.TestCase):
                     'ext': 'mp4',
                     'format_id': '144p',
                     'height': 144,
-                }]
+                }],
             })
 
         # from https://www.directvnow.com
@@ -470,7 +470,7 @@ class TestInfoExtractor(unittest.TestCase):
                 'formats': [{
                     'ext': 'mp4',
                     'url': 'https://cdn.directv.com/content/dam/dtv/prod/website_directvnow-international/videos/DTVN_hdr_HBO_v3.mp4',
-                }]
+                }],
             })
 
         # from https://www.directvnow.com
@@ -488,7 +488,7 @@ class TestInfoExtractor(unittest.TestCase):
                 'formats': [{
                     'url': 'https://cdn.directv.com/content/dam/dtv/prod/website_directvnow-international/videos/DTVN_hdr_HBO_v3.mp4',
                     'ext': 'mp4',
-                }]
+                }],
             })
 
         # from https://www.klarna.com/uk/
@@ -547,8 +547,8 @@ class TestInfoExtractor(unittest.TestCase):
                 'id': 'XEgvuql4',
                 'formats': [{
                     'url': 'rtmp://192.138.214.154/live/sjclive',
-                    'ext': 'flv'
-                }]
+                    'ext': 'flv',
+                }],
             })
 
         # from https://www.pornoxo.com/videos/7564/striptease-from-sexy-secretary/
@@ -588,8 +588,8 @@ class TestInfoExtractor(unittest.TestCase):
                 'thumbnail': 'https://t03.vipstreamservice.com/thumbs/pxo-full/2009-12/14/a4b2157147afe5efa93ce1978e0265289c193874e02597.flv-full-13.jpg',
                 'formats': [{
                     'url': 'https://cdn.pornoxo.com/key=MF+oEbaxqTKb50P-w9G3nA,end=1489689259,ip=104.199.146.27/ip=104.199.146.27/speed=6573765/buffer=3.0/2009-12/4b2157147afe5efa93ce1978e0265289c193874e02597.flv',
-                    'ext': 'flv'
-                }]
+                    'ext': 'flv',
+                }],
             })
 
         # from http://www.indiedb.com/games/king-machine/videos
@@ -610,12 +610,12 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                 'formats': [{
                     'url': 'http://cdn.dbolical.com/cache/videos/games/1/50/49678/encode_mp4/king-machine-trailer.mp4',
                     'height': 360,
-                    'ext': 'mp4'
+                    'ext': 'mp4',
                 }, {
                     'url': 'http://cdn.dbolical.com/cache/videos/games/1/50/49678/encode720p_mp4/king-machine-trailer.mp4',
                     'height': 720,
-                    'ext': 'mp4'
-                }]
+                    'ext': 'mp4',
+                }],
             })
 
     def test_parse_m3u8_formats(self):
@@ -866,7 +866,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                     'height': 1080,
                     'vcodec': 'avc1.64002a',
                 }],
-                {}
+                {},
             ),
             (
                 'bipbop_16x9',
@@ -990,45 +990,45 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                     'en': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/eng/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/eng_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
                     'fr': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/fra/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/fra_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
                     'es': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/spa/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/spa_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
                     'ja': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/jpn/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/jpn_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
-                }
+                },
             ),
         ]
 
         for m3u8_file, m3u8_url, expected_formats, expected_subs in _TEST_CASES:
-            with open('./test/testdata/m3u8/%s.m3u8' % m3u8_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/m3u8/{m3u8_file}.m3u8', 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)
@@ -1366,14 +1366,14 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                             'url': 'https://sdn-global-streaming-cache-3qsdn.akamaized.net/stream/3144/files/17/07/672975/3144-kZT4LWMQw6Rh7Kpd.ism/manifest.mpd',
                             'fragment_base_url': 'https://sdn-global-streaming-cache-3qsdn.akamaized.net/stream/3144/files/17/07/672975/3144-kZT4LWMQw6Rh7Kpd.ism/dash/',
                             'protocol': 'http_dash_segments',
-                        }
-                    ]
                         },
-            )
+                    ],
+                },
+            ),
         ]
 
         for mpd_file, mpd_url, mpd_base_url, expected_formats, expected_subtitles in _TEST_CASES:
-            with open('./test/testdata/mpd/%s.mpd' % mpd_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/mpd/{mpd_file}.mpd', encoding='utf-8') as f:
                 formats, subtitles = self.ie._parse_mpd_formats_and_subtitles(
                     compat_etree_fromstring(f.read().encode()),
                     mpd_base_url=mpd_base_url, mpd_url=mpd_url)
@@ -1408,7 +1408,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'sampling_rate': 48000,
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-100',
@@ -1431,7 +1431,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401FDA0544EFFC2D002CBC40000003004000000C03C60CA80000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-326',
@@ -1454,7 +1454,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401FDA0241FE23FFC3BC83BA44000003000400000300C03C60CA800000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-698',
@@ -1477,7 +1477,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401FDA0350BFB97FF06AF06AD1000003000100000300300F1832A00000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-1493',
@@ -1500,7 +1500,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401FDA011C3DE6FFF0D890D871000003000100000300300F1832A00000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-4482',
@@ -1523,7 +1523,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401FDA01A816F97FFC1ABC1AB440000003004000000C03C60CA80000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }],
                 {
@@ -1538,10 +1538,10 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                                 'duration': 8880746666,
                                 'timescale': 10000000,
                                 'fourcc': 'TTML',
-                                'codec_private_data': ''
-                            }
-                        }
-                    ]
+                                'codec_private_data': '',
+                            },
+                        },
+                    ],
                 },
             ),
             (
@@ -1571,7 +1571,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'sampling_rate': 48000,
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'audio_deu_1-224',
@@ -1597,7 +1597,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'sampling_rate': 48000,
                         'channels': 6,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-23',
@@ -1622,7 +1622,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '000000016742C00CDB06077E5C05A808080A00000300020000030009C0C02EE0177CC6300F142AE00000000168CA8DC8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-403',
@@ -1647,7 +1647,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D4014E98323B602D4040405000003000100000300320F1429380000000168EAECF2',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-680',
@@ -1672,7 +1672,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401EE981405FF2E02D4040405000000300100000030320F162D3800000000168EAECF2',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-1253',
@@ -1698,7 +1698,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401EE981405FF2E02D4040405000000300100000030320F162D3800000000168EAECF2',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-2121',
@@ -1723,7 +1723,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D401EECA0601BD80B50101014000003000400000300C83C58B6580000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-3275',
@@ -1748,7 +1748,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D4020ECA02802DD80B501010140000003004000000C83C60C65800000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-5300',
@@ -1773,7 +1773,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D4028ECA03C0113F2E02D4040405000000300100000030320F18319600000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-8079',
@@ -1798,7 +1798,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                         'codec_private_data': '00000001674D4028ECA03C0113F2E02D4040405000000300100000030320F18319600000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }],
                 {},
@@ -1806,7 +1806,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for ism_file, ism_url, expected_formats, expected_subtitles in _TEST_CASES:
-            with open('./test/testdata/ism/%s.Manifest' % ism_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/ism/{ism_file}.Manifest', encoding='utf-8') as f:
                 formats, subtitles = self.ie._parse_ism_formats_and_subtitles(
                     compat_etree_fromstring(f.read().encode()), ism_url=ism_url)
                 self.ie._sort_formats(formats)
@@ -1827,12 +1827,12 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                     'tbr': 2148,
                     'width': 1280,
                     'height': 720,
-                }]
+                }],
             ),
         ]
 
         for f4m_file, f4m_url, expected_formats in _TEST_CASES:
-            with open('./test/testdata/f4m/%s.f4m' % f4m_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/f4m/{f4m_file}.f4m', encoding='utf-8') as f:
                 formats = self.ie._parse_f4m_formats(
                     compat_etree_fromstring(f.read().encode()),
                     f4m_url, None)
@@ -1873,13 +1873,13 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                     }, {
                         'manifest_url': 'https://example.org/src/foo_xspf.xspf',
                         'url': 'https://example.com/track3.mp3',
-                    }]
-                }]
+                    }],
+                }],
             ),
         ]
 
         for xspf_file, xspf_url, expected_entries in _TEST_CASES:
-            with open('./test/testdata/xspf/%s.xspf' % xspf_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/xspf/{xspf_file}.xspf', encoding='utf-8') as f:
                 entries = self.ie._parse_xspf(
                     compat_etree_fromstring(f.read().encode()),
                     xspf_file, xspf_url=xspf_url, xspf_base_url=xspf_url)
@@ -1902,7 +1902,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         server_thread.start()
 
         (content, urlh) = self.ie._download_webpage_handle(
-            'http://127.0.0.1:%d/teapot' % port, None,
+            f'http://127.0.0.1:{port}/teapot', None,
             expected_status=TEAPOT_RESPONSE_STATUS)
         self.assertEqual(content, TEAPOT_RESPONSE_BODY)
 

test/test_YoutubeDL.py

@@ -8,6 +8,7 @@ import unittest
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 
+import contextlib
 import copy
 import json
 
@@ -129,8 +130,8 @@ class TestFormatSelection(unittest.TestCase):
                 'allow_multiple_audio_streams': multi,
             })
             ydl.process_ie_result(info_dict.copy())
-            downloaded = map(lambda x: x['format_id'], ydl.downloaded_info_dicts)
-            self.assertEqual(list(downloaded), list(expected))
+            downloaded = [x['format_id'] for x in ydl.downloaded_info_dicts]
+            self.assertEqual(downloaded, list(expected))
 
         test('20/47', '47')
         test('20/71/worst', '35')
@@ -515,10 +516,8 @@ class TestFormatSelection(unittest.TestCase):
         self.assertEqual(downloaded_ids, ['D', 'C', 'B'])
 
         ydl = YDL({'format': 'best[height<40]'})
-        try:
+        with contextlib.suppress(ExtractorError):
             ydl.process_ie_result(info_dict)
-        except ExtractorError:
-            pass
         self.assertEqual(ydl.downloaded_info_dicts, [])
 
     def test_default_format_spec(self):
@@ -652,8 +651,8 @@ class TestYoutubeDL(unittest.TestCase):
         'formats': [
             {'id': 'id 1', 'height': 1080, 'width': 1920},
             {'id': 'id 2', 'height': 720},
-            {'id': 'id 3'}
-        ]
+            {'id': 'id 3'},
+        ],
     }
 
     def test_prepare_outtmpl_and_filename(self):
@@ -773,7 +772,7 @@ class TestYoutubeDL(unittest.TestCase):
         test('%(formats)j', (json.dumps(FORMATS), None))
         test('%(formats)#j', (
             json.dumps(FORMATS, indent=4),
-            json.dumps(FORMATS, indent=4).replace(':', '：').replace('"', "＂").replace('\n', ' ')
+            json.dumps(FORMATS, indent=4).replace(':', '：').replace('"', '＂').replace('\n', ' '),
         ))
         test('%(title5).3B', 'á')
         test('%(title5)U', 'áéí 𝐀')
@@ -843,8 +842,8 @@ class TestYoutubeDL(unittest.TestCase):
 
         # Empty filename
         test('%(foo|)s-%(bar|)s.%(ext)s', '-.mp4')
-        # test('%(foo|)s.%(ext)s', ('.mp4', '_.mp4'))  # fixme
-        # test('%(foo|)s', ('', '_'))  # fixme
+        # test('%(foo|)s.%(ext)s', ('.mp4', '_.mp4'))  # FIXME: ?
+        # test('%(foo|)s', ('', '_'))  # FIXME: ?
 
         # Environment variable expansion for prepare_filename
         os.environ['__yt_dlp_var'] = 'expanded'
@@ -861,7 +860,7 @@ class TestYoutubeDL(unittest.TestCase):
         test('Hello %(title1)s', 'Hello $PATH')
         test('Hello %(title2)s', 'Hello %PATH%')
         test('%(title3)s', ('foo/bar\\test', 'foo⧸bar⧹test'))
-        test('folder/%(title3)s', ('folder/foo/bar\\test', 'folder%sfoo⧸bar⧹test' % os.path.sep))
+        test('folder/%(title3)s', ('folder/foo/bar\\test', f'folder{os.path.sep}foo⧸bar⧹test'))
 
     def test_format_note(self):
         ydl = YoutubeDL()
@@ -883,22 +882,22 @@ class TestYoutubeDL(unittest.TestCase):
                     f.write('EXAMPLE')
                 return [info['filepath']], info
 
-        def run_pp(params, PP):
+        def run_pp(params, pp):
             with open(filename, 'w') as f:
                 f.write('EXAMPLE')
             ydl = YoutubeDL(params)
-            ydl.add_post_processor(PP())
+            ydl.add_post_processor(pp())
             ydl.post_process(filename, {'filepath': filename})
 
         run_pp({'keepvideo': True}, SimplePP)
-        self.assertTrue(os.path.exists(filename), '%s doesn\'t exist' % filename)
-        self.assertTrue(os.path.exists(audiofile), '%s doesn\'t exist' % audiofile)
+        self.assertTrue(os.path.exists(filename), f'{filename} doesn\'t exist')
+        self.assertTrue(os.path.exists(audiofile), f'{audiofile} doesn\'t exist')
         os.unlink(filename)
         os.unlink(audiofile)
 
         run_pp({'keepvideo': False}, SimplePP)
-        self.assertFalse(os.path.exists(filename), '%s exists' % filename)
-        self.assertTrue(os.path.exists(audiofile), '%s doesn\'t exist' % audiofile)
+        self.assertFalse(os.path.exists(filename), f'{filename} exists')
+        self.assertTrue(os.path.exists(audiofile), f'{audiofile} doesn\'t exist')
         os.unlink(audiofile)
 
         class ModifierPP(PostProcessor):
@@ -908,7 +907,7 @@ class TestYoutubeDL(unittest.TestCase):
                 return [], info
 
         run_pp({'keepvideo': False}, ModifierPP)
-        self.assertTrue(os.path.exists(filename), '%s doesn\'t exist' % filename)
+        self.assertTrue(os.path.exists(filename), f'{filename} doesn\'t exist')
         os.unlink(filename)
 
     def test_match_filter(self):
@@ -920,7 +919,7 @@ class TestYoutubeDL(unittest.TestCase):
             'duration': 30,
             'filesize': 10 * 1024,
             'playlist_id': '42',
-            'uploader': "變態妍字幕版 太妍 тест",
+            'uploader': '變態妍字幕版 太妍 тест',
             'creator': "тест ' 123 ' тест--",
             'webpage_url': 'http://example.com/watch?v=shenanigans',
         }
@@ -933,7 +932,7 @@ class TestYoutubeDL(unittest.TestCase):
             'description': 'foo',
             'filesize': 5 * 1024,
             'playlist_id': '43',
-            'uploader': "тест 123",
+            'uploader': 'тест 123',
             'webpage_url': 'http://example.com/watch?v=SHENANIGANS',
         }
         videos = [first, second]
@@ -1180,7 +1179,7 @@ class TestYoutubeDL(unittest.TestCase):
                     })
                 return {
                     'id': video_id,
-                    'title': 'Video %s' % video_id,
+                    'title': f'Video {video_id}',
                     'formats': formats,
                 }
 
@@ -1194,8 +1193,8 @@ class TestYoutubeDL(unittest.TestCase):
                         '_type': 'url_transparent',
                         'ie_key': VideoIE.ie_key(),
                         'id': video_id,
-                        'url': 'video:%s' % video_id,
-                        'title': 'Video Transparent %s' % video_id,
+                        'url': f'video:{video_id}',
+                        'title': f'Video Transparent {video_id}',
                     }
 
             def _real_extract(self, url):

test/test_aes.py

@@ -87,7 +87,7 @@ class TestAES(unittest.TestCase):
         password = intlist_to_bytes(self.key).decode()
         encrypted = base64.b64encode(
             intlist_to_bytes(self.iv[:8])
-            + b'\x17\x15\x93\xab\x8d\x80V\xcdV\xe0\t\xcdo\xc2\xa5\xd8ksM\r\xe27N\xae'
+            + b'\x17\x15\x93\xab\x8d\x80V\xcdV\xe0\t\xcdo\xc2\xa5\xd8ksM\r\xe27N\xae',
         ).decode()
         decrypted = (aes_decrypt_text(encrypted, password, 16))
         self.assertEqual(decrypted, self.secret_msg)
@@ -95,7 +95,7 @@ class TestAES(unittest.TestCase):
         password = intlist_to_bytes(self.key).decode()
         encrypted = base64.b64encode(
             intlist_to_bytes(self.iv[:8])
-            + b'\x0b\xe6\xa4\xd9z\x0e\xb8\xb9\xd0\xd4i_\x85\x1d\x99\x98_\xe5\x80\xe7.\xbf\xa5\x83'
+            + b'\x0b\xe6\xa4\xd9z\x0e\xb8\xb9\xd0\xd4i_\x85\x1d\x99\x98_\xe5\x80\xe7.\xbf\xa5\x83',
         ).decode()
         decrypted = (aes_decrypt_text(encrypted, password, 32))
         self.assertEqual(decrypted, self.secret_msg)
@@ -132,16 +132,16 @@ class TestAES(unittest.TestCase):
         block = [0x21, 0xA0, 0x43, 0xFF]
 
         self.assertEqual(pad_block(block, 'pkcs7'),
-                         block + [0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C])
+                         [*block, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C])
 
         self.assertEqual(pad_block(block, 'iso7816'),
-                         block + [0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+                         [*block, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
 
         self.assertEqual(pad_block(block, 'whitespace'),
-                         block + [0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20])
+                         [*block, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20])
 
         self.assertEqual(pad_block(block, 'zero'),
-                         block + [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+                         [*block, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
 
         block = list(range(16))
         for mode in ('pkcs7', 'iso7816', 'whitespace', 'zero'):

test/test_compat.py

@@ -15,8 +15,8 @@ from yt_dlp.compat import urllib  # isort: split
 from yt_dlp.compat import (
     compat_etree_fromstring,
     compat_expanduser,
-    compat_urllib_parse_unquote,
-    compat_urllib_parse_urlencode,
+    compat_urllib_parse_unquote,  # noqa: TID251
+    compat_urllib_parse_urlencode,  # noqa: TID251
 )
 from yt_dlp.compat.urllib.request import getproxies
 
@@ -24,15 +24,15 @@ from yt_dlp.compat.urllib.request import getproxies
 class TestCompat(unittest.TestCase):
     def test_compat_passthrough(self):
         with self.assertWarns(DeprecationWarning):
-            compat.compat_basestring
+            _ = compat.compat_basestring
 
         with self.assertWarns(DeprecationWarning):
-            compat.WINDOWS_VT_MODE
+            _ = compat.WINDOWS_VT_MODE
 
         self.assertEqual(urllib.request.getproxies, getproxies)
 
         with self.assertWarns(DeprecationWarning):
-            compat.compat_pycrypto_AES  # Must not raise error
+            _ = compat.compat_pycrypto_AES  # Must not raise error
 
     def test_compat_expanduser(self):
         old_home = os.environ.get('HOME')

test/test_config.py

@@ -71,7 +71,7 @@ def _generate_expected_groups():
             Path('/etc/yt-dlp.conf'),
             Path('/etc/yt-dlp/config'),
             Path('/etc/yt-dlp/config.txt'),
-        ]
+        ],
     }
 
 

test/test_cookies.py

@@ -106,7 +106,7 @@ class TestCookies(unittest.TestCase):
 
     def test_chrome_cookie_decryptor_windows_v10(self):
         with MonkeyPatch(cookies, {
-            '_get_windows_v10_key': lambda *args, **kwargs: b'Y\xef\xad\xad\xeerp\xf0Y\xe6\x9b\x12\xc2<z\x16]\n\xbb\xb8\xcb\xd7\x9bA\xc3\x14e\x99{\xd6\xf4&'
+            '_get_windows_v10_key': lambda *args, **kwargs: b'Y\xef\xad\xad\xeerp\xf0Y\xe6\x9b\x12\xc2<z\x16]\n\xbb\xb8\xcb\xd7\x9bA\xc3\x14e\x99{\xd6\xf4&',
         }):
             encrypted_value = b'v10T\xb8\xf3\xb8\x01\xa7TtcV\xfc\x88\xb8\xb8\xef\x05\xb5\xfd\x18\xc90\x009\xab\xb1\x893\x85)\x87\xe1\xa9-\xa3\xad='
             value = '32101439'
@@ -121,17 +121,17 @@ class TestCookies(unittest.TestCase):
             self.assertEqual(decryptor.decrypt(encrypted_value), value)
 
     def test_safari_cookie_parsing(self):
-        cookies = \
-            b'cook\x00\x00\x00\x01\x00\x00\x00i\x00\x00\x01\x00\x01\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00Y' \
-            b'\x00\x00\x00\x00\x00\x00\x00 \x00\x00\x00\x00\x00\x00\x008\x00\x00\x00B\x00\x00\x00F\x00\x00\x00H' \
-            b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x03\xa5>\xc3A\x00\x00\x80\xc3\x07:\xc3A' \
-            b'localhost\x00foo\x00/\x00test%20%3Bcookie\x00\x00\x00\x054\x07\x17 \x05\x00\x00\x00Kbplist00\xd1\x01' \
-            b'\x02_\x10\x18NSHTTPCookieAcceptPolicy\x10\x02\x08\x0b&\x00\x00\x00\x00\x00\x00\x01\x01\x00\x00\x00' \
-            b'\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00('
+        cookies = (
+            b'cook\x00\x00\x00\x01\x00\x00\x00i\x00\x00\x01\x00\x01\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00Y'
+            b'\x00\x00\x00\x00\x00\x00\x00 \x00\x00\x00\x00\x00\x00\x008\x00\x00\x00B\x00\x00\x00F\x00\x00\x00H'
+            b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x03\xa5>\xc3A\x00\x00\x80\xc3\x07:\xc3A'
+            b'localhost\x00foo\x00/\x00test%20%3Bcookie\x00\x00\x00\x054\x07\x17 \x05\x00\x00\x00Kbplist00\xd1\x01'
+            b'\x02_\x10\x18NSHTTPCookieAcceptPolicy\x10\x02\x08\x0b&\x00\x00\x00\x00\x00\x00\x01\x01\x00\x00\x00'
+            b'\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00(')
 
         jar = parse_safari_cookies(cookies)
         self.assertEqual(len(jar), 1)
-        cookie = list(jar)[0]
+        cookie = next(iter(jar))
         self.assertEqual(cookie.domain, 'localhost')
         self.assertEqual(cookie.port, None)
         self.assertEqual(cookie.path, '/')
@@ -164,7 +164,7 @@ class TestLenientSimpleCookie(unittest.TestCase):
                     attributes = {
                         key: value
                         for key, value in dict(morsel).items()
-                        if value != ""
+                        if value != ''
                     }
                     self.assertEqual(attributes, expected_attributes, message)
 
@@ -174,133 +174,133 @@ class TestLenientSimpleCookie(unittest.TestCase):
         self._run_tests(
             # Copied from https://github.com/python/cpython/blob/v3.10.7/Lib/test/test_http_cookies.py
             (
-                "Test basic cookie",
-                "chips=ahoy; vienna=finger",
-                {"chips": "ahoy", "vienna": "finger"},
+                'Test basic cookie',
+                'chips=ahoy; vienna=finger',
+                {'chips': 'ahoy', 'vienna': 'finger'},
             ),
             (
-                "Test quoted cookie",
+                'Test quoted cookie',
                 'keebler="E=mc2; L=\\"Loves\\"; fudge=\\012;"',
-                {"keebler": 'E=mc2; L="Loves"; fudge=\012;'},
+                {'keebler': 'E=mc2; L="Loves"; fudge=\012;'},
             ),
             (
                 "Allow '=' in an unquoted value",
-                "keebler=E=mc2",
-                {"keebler": "E=mc2"},
+                'keebler=E=mc2',
+                {'keebler': 'E=mc2'},
             ),
             (
                 "Allow cookies with ':' in their name",
-                "key:term=value:term",
-                {"key:term": "value:term"},
+                'key:term=value:term',
+                {'key:term': 'value:term'},
             ),
             (
                 "Allow '[' and ']' in cookie values",
-                "a=b; c=[; d=r; f=h",
-                {"a": "b", "c": "[", "d": "r", "f": "h"},
+                'a=b; c=[; d=r; f=h',
+                {'a': 'b', 'c': '[', 'd': 'r', 'f': 'h'},
             ),
             (
-                "Test basic cookie attributes",
+                'Test basic cookie attributes',
                 'Customer="WILE_E_COYOTE"; Version=1; Path=/acme',
-                {"Customer": ("WILE_E_COYOTE", {"version": "1", "path": "/acme"})},
+                {'Customer': ('WILE_E_COYOTE', {'version': '1', 'path': '/acme'})},
             ),
             (
-                "Test flag only cookie attributes",
+                'Test flag only cookie attributes',
                 'Customer="WILE_E_COYOTE"; HttpOnly; Secure',
-                {"Customer": ("WILE_E_COYOTE", {"httponly": True, "secure": True})},
+                {'Customer': ('WILE_E_COYOTE', {'httponly': True, 'secure': True})},
             ),
             (
-                "Test flag only attribute with values",
-                "eggs=scrambled; httponly=foo; secure=bar; Path=/bacon",
-                {"eggs": ("scrambled", {"httponly": "foo", "secure": "bar", "path": "/bacon"})},
+                'Test flag only attribute with values',
+                'eggs=scrambled; httponly=foo; secure=bar; Path=/bacon',
+                {'eggs': ('scrambled', {'httponly': 'foo', 'secure': 'bar', 'path': '/bacon'})},
             ),
             (
                 "Test special case for 'expires' attribute, 4 digit year",
                 'Customer="W"; expires=Wed, 01 Jan 2010 00:00:00 GMT',
-                {"Customer": ("W", {"expires": "Wed, 01 Jan 2010 00:00:00 GMT"})},
+                {'Customer': ('W', {'expires': 'Wed, 01 Jan 2010 00:00:00 GMT'})},
             ),
             (
                 "Test special case for 'expires' attribute, 2 digit year",
                 'Customer="W"; expires=Wed, 01 Jan 98 00:00:00 GMT',
-                {"Customer": ("W", {"expires": "Wed, 01 Jan 98 00:00:00 GMT"})},
+                {'Customer': ('W', {'expires': 'Wed, 01 Jan 98 00:00:00 GMT'})},
             ),
             (
-                "Test extra spaces in keys and values",
-                "eggs  =  scrambled  ;  secure  ;  path  =  bar   ; foo=foo   ",
-                {"eggs": ("scrambled", {"secure": True, "path": "bar"}), "foo": "foo"},
+                'Test extra spaces in keys and values',
+                'eggs  =  scrambled  ;  secure  ;  path  =  bar   ; foo=foo   ',
+                {'eggs': ('scrambled', {'secure': True, 'path': 'bar'}), 'foo': 'foo'},
             ),
             (
-                "Test quoted attributes",
+                'Test quoted attributes',
                 'Customer="WILE_E_COYOTE"; Version="1"; Path="/acme"',
-                {"Customer": ("WILE_E_COYOTE", {"version": "1", "path": "/acme"})}
+                {'Customer': ('WILE_E_COYOTE', {'version': '1', 'path': '/acme'})},
             ),
             # Our own tests that CPython passes
             (
                 "Allow ';' in quoted value",
                 'chips="a;hoy"; vienna=finger',
-                {"chips": "a;hoy", "vienna": "finger"},
+                {'chips': 'a;hoy', 'vienna': 'finger'},
             ),
             (
-                "Keep only the last set value",
-                "a=c; a=b",
-                {"a": "b"},
+                'Keep only the last set value',
+                'a=c; a=b',
+                {'a': 'b'},
             ),
         )
 
     def test_lenient_parsing(self):
         self._run_tests(
             (
-                "Ignore and try to skip invalid cookies",
+                'Ignore and try to skip invalid cookies',
                 'chips={"ahoy;": 1}; vienna="finger;"',
-                {"vienna": "finger;"},
+                {'vienna': 'finger;'},
             ),
             (
-                "Ignore cookies without a name",
-                "a=b; unnamed; c=d",
-                {"a": "b", "c": "d"},
+                'Ignore cookies without a name',
+                'a=b; unnamed; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
                 "Ignore '\"' cookie without name",
                 'a=b; "; c=d',
-                {"a": "b", "c": "d"},
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Skip all space separated values",
-                "x a=b c=d x; e=f",
-                {"a": "b", "c": "d", "e": "f"},
+                'Skip all space separated values',
+                'x a=b c=d x; e=f',
+                {'a': 'b', 'c': 'd', 'e': 'f'},
             ),
             (
-                "Skip all space separated values",
+                'Skip all space separated values',
                 'x a=b; data={"complex": "json", "with": "key=value"}; x c=d x',
-                {"a": "b", "c": "d"},
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Expect quote mending",
+                'Expect quote mending',
                 'a=b; invalid="; c=d',
-                {"a": "b", "c": "d"},
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Reset morsel after invalid to not capture attributes",
-                "a=b; invalid; Version=1; c=d",
-                {"a": "b", "c": "d"},
+                'Reset morsel after invalid to not capture attributes',
+                'a=b; invalid; Version=1; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Reset morsel after invalid to not capture attributes",
-                "a=b; $invalid; $Version=1; c=d",
-                {"a": "b", "c": "d"},
+                'Reset morsel after invalid to not capture attributes',
+                'a=b; $invalid; $Version=1; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Continue after non-flag attribute without value",
-                "a=b; path; Version=1; c=d",
-                {"a": "b", "c": "d"},
+                'Continue after non-flag attribute without value',
+                'a=b; path; Version=1; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Allow cookie attributes with `$` prefix",
+                'Allow cookie attributes with `$` prefix',
                 'Customer="WILE_E_COYOTE"; $Version=1; $Secure; $Path=/acme',
-                {"Customer": ("WILE_E_COYOTE", {"version": "1", "secure": True, "path": "/acme"})},
+                {'Customer': ('WILE_E_COYOTE', {'version': '1', 'secure': True, 'path': '/acme'})},
             ),
             (
-                "Invalid Morsel keys should not result in an error",
-                "Key=Value; [Invalid]=Value; Another=Value",
-                {"Key": "Value", "Another": "Value"},
+                'Invalid Morsel keys should not result in an error',
+                'Key=Value; [Invalid]=Value; Another=Value',
+                {'Key': 'Value', 'Another': 'Value'},
             ),
         )

test/test_download.py

@@ -94,7 +94,7 @@ def generator(test_case, tname):
             'playlist', [] if is_playlist else [test_case])
 
         def print_skipping(reason):
-            print('Skipping %s: %s' % (test_case['name'], reason))
+            print('Skipping {}: {}'.format(test_case['name'], reason))
             self.skipTest(reason)
 
         if not ie.working():
@@ -117,7 +117,7 @@ def generator(test_case, tname):
 
         for other_ie in other_ies:
             if not other_ie.working():
-                print_skipping('test depends on %sIE, marked as not WORKING' % other_ie.ie_key())
+                print_skipping(f'test depends on {other_ie.ie_key()}IE, marked as not WORKING')
 
         params = get_params(test_case.get('params', {}))
         params['outtmpl'] = tname + '_' + params['outtmpl']
@@ -148,10 +148,7 @@ def generator(test_case, tname):
                 return False
             if err.__class__.__name__ == expected_exception:
                 return True
-            for exc in err.exc_info:
-                if exc.__class__.__name__ == expected_exception:
-                    return True
-            return False
+            return any(exc.__class__.__name__ == expected_exception for exc in err.exc_info)
 
         def try_rm_tcs_files(tcs=None):
             if tcs is None:
@@ -181,7 +178,7 @@ def generator(test_case, tname):
                         raise
 
                     if try_num == RETRIES:
-                        report_warning('%s failed due to network errors, skipping...' % tname)
+                        report_warning(f'{tname} failed due to network errors, skipping...')
                         return
 
                     print(f'Retrying: {try_num} failed tries\n\n##########\n\n')
@@ -244,9 +241,8 @@ def generator(test_case, tname):
                         got_fsize = os.path.getsize(tc_filename)
                         assertGreaterEqual(
                             self, got_fsize, expected_minsize,
-                            'Expected %s to be at least %s, but it\'s only %s ' %
-                            (tc_filename, format_bytes(expected_minsize),
-                                format_bytes(got_fsize)))
+                            f'Expected {tc_filename} to be at least {format_bytes(expected_minsize)}, '
+                            f'but it\'s only {format_bytes(got_fsize)} ')
                     if 'md5' in tc:
                         md5_for_file = _file_md5(tc_filename)
                         self.assertEqual(tc['md5'], md5_for_file)
@@ -255,7 +251,7 @@ def generator(test_case, tname):
                 info_json_fn = os.path.splitext(tc_filename)[0] + '.info.json'
                 self.assertTrue(
                     os.path.exists(info_json_fn),
-                    'Missing info file %s' % info_json_fn)
+                    f'Missing info file {info_json_fn}')
                 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', {}))

test/test_downloader_http.py

@@ -38,9 +38,9 @@ class HTTPTestRequestHandler(http.server.BaseHTTPRequestHandler):
                 end = int(mobj.group(2))
         valid_range = start is not None and end is not None
         if valid_range:
-            content_range = 'bytes %d-%d' % (start, end)
+            content_range = f'bytes {start}-{end}'
             if total:
-                content_range += '/%d' % total
+                content_range += f'/{total}'
             self.send_header('Content-Range', content_range)
         return (end - start + 1) if valid_range else total
 
@@ -84,7 +84,7 @@ class TestHttpFD(unittest.TestCase):
         filename = 'testfile.mp4'
         try_rm(encodeFilename(filename))
         self.assertTrue(downloader.real_download(filename, {
-            'url': 'http://127.0.0.1:%d/%s' % (self.port, ep),
+            'url': f'http://127.0.0.1:{self.port}/{ep}',
         }), ep)
         self.assertEqual(os.path.getsize(encodeFilename(filename)), TEST_SIZE, ep)
         try_rm(encodeFilename(filename))

test/test_http_proxy.py

@@ -105,7 +105,7 @@ if urllib3:
                 self.incoming,
                 self.outgoing,
                 server_hostname=server_hostname,
-                server_side=server_side
+                server_side=server_side,
             )
             self._ssl_io_loop(self.sslobj.do_handshake)
 
@@ -333,7 +333,7 @@ class TestHTTPConnectProxy:
 
     @pytest.mark.skip_handler(
         'Requests',
-        'bug in urllib3 causes unclosed socket: https://github.com/urllib3/urllib3/issues/3374'
+        'bug in urllib3 causes unclosed socket: https://github.com/urllib3/urllib3/issues/3374',
     )
     def test_http_connect_bad_auth(self, handler, ctx):
         with ctx.http_server(HTTPConnectProxyHandler, username='test', password='test') as server_address:

test/test_iqiyi_sdk_interpreter.py

@@ -29,11 +29,11 @@ class WarningLogger:
 @is_download_test
 class TestIqiyiSDKInterpreter(unittest.TestCase):
     def test_iqiyi_sdk_interpreter(self):
-        '''
+        """
         Test the functionality of IqiyiSDKInterpreter by trying to log in
 
         If `sign` is incorrect, /validate call throws an HTTP 556 error
-        '''
+        """
         logger = WarningLogger()
         ie = IqiyiIE(FakeYDL({'logger': logger}))
         ie._perform_login('foo', 'bar')

test/test_netrc.py

@@ -21,7 +21,7 @@ class TestNetRc(unittest.TestCase):
                 continue
             self.assertTrue(
                 ie._NETRC_MACHINE,
-                'Extractor %s supports login, but is missing a _NETRC_MACHINE property' % ie.IE_NAME)
+                f'Extractor {ie.IE_NAME} supports login, but is missing a _NETRC_MACHINE property')
 
 
 if __name__ == '__main__':

test/test_networking.py

@@ -375,10 +375,10 @@ class TestHTTPRequestHandler(TestRequestHandlerBase):
         with handler() as rh:
             for bad_status in (400, 500, 599, 302):
                 with pytest.raises(HTTPError):
-                    validate_and_send(rh, Request('http://127.0.0.1:%d/gen_%d' % (self.http_port, bad_status)))
+                    validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/gen_{bad_status}'))
 
             # Should not raise an error
-            validate_and_send(rh, Request('http://127.0.0.1:%d/gen_200' % self.http_port)).close()
+            validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/gen_200')).close()
 
     def test_response_url(self, handler):
         with handler() as rh:
@@ -472,7 +472,7 @@ class TestHTTPRequestHandler(TestRequestHandlerBase):
     def test_incompleteread(self, handler):
         with handler(timeout=2) as rh:
             with pytest.raises(IncompleteRead, match='13 bytes read, 234221 more expected'):
-                validate_and_send(rh, Request('http://127.0.0.1:%d/incompleteread' % self.http_port)).read()
+                validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/incompleteread')).read()
 
     def test_cookies(self, handler):
         cookiejar = YoutubeDLCookieJar()
@@ -740,7 +740,7 @@ class TestRequestHandlerMisc:
     @pytest.mark.parametrize('handler,logger_name', [
         ('Requests', 'urllib3'),
         ('Websockets', 'websockets.client'),
-        ('Websockets', 'websockets.server')
+        ('Websockets', 'websockets.server'),
     ], indirect=['handler'])
     def test_remove_logging_handler(self, handler, logger_name):
         # Ensure any logging handlers, which may contain a YoutubeDL instance,
@@ -794,7 +794,7 @@ class TestUrllibRequestHandler(TestRequestHandlerBase):
         with handler() as rh:
             with pytest.raises(
                 CertificateVerifyError,
-                match=r'\[SSL: CERTIFICATE_VERIFY_FAILED\] certificate verify failed: self.signed certificate'
+                match=r'\[SSL: CERTIFICATE_VERIFY_FAILED\] certificate verify failed: self.signed certificate',
             ):
                 validate_and_send(rh, Request(f'https://127.0.0.1:{self.https_port}/headers'))
 
@@ -804,14 +804,14 @@ class TestUrllibRequestHandler(TestRequestHandlerBase):
         (
             Request('http://127.0.0.1', method='GET\n'),
             'method can\'t contain control characters',
-            lambda v: v < (3, 7, 9) or (3, 8, 0) <= v < (3, 8, 5)
+            lambda v: v < (3, 7, 9) or (3, 8, 0) <= v < (3, 8, 5),
         ),
         # https://github.com/python/cpython/blob/987b712b4aeeece336eed24fcc87a950a756c3e2/Lib/http/client.py#L1265
         # bpo-38576: Check implemented in 3.7.8+, 3.8.3+
         (
             Request('http://127.0.0. 1', method='GET'),
             'URL can\'t contain control characters',
-            lambda v: v < (3, 7, 8) or (3, 8, 0) <= v < (3, 8, 3)
+            lambda v: v < (3, 7, 8) or (3, 8, 0) <= v < (3, 8, 3),
         ),
         # https://github.com/python/cpython/blob/987b712b4aeeece336eed24fcc87a950a756c3e2/Lib/http/client.py#L1288C31-L1288C50
         (Request('http://127.0.0.1', headers={'foo\n': 'bar'}), 'Invalid header name', None),
@@ -840,7 +840,7 @@ class TestRequestsRequestHandler(TestRequestHandlerBase):
         (lambda: requests.exceptions.InvalidHeader(), RequestError),
         # catch-all: https://github.com/psf/requests/blob/main/src/requests/adapters.py#L535
         (lambda: urllib3.exceptions.HTTPError(), TransportError),
-        (lambda: requests.exceptions.RequestException(), RequestError)
+        (lambda: requests.exceptions.RequestException(), RequestError),
         #  (lambda: requests.exceptions.TooManyRedirects(), HTTPError) - Needs a response object
     ])
     def test_request_error_mapping(self, handler, monkeypatch, raised, expected):
@@ -868,12 +868,12 @@ class TestRequestsRequestHandler(TestRequestHandlerBase):
         (
             lambda: urllib3.exceptions.ProtocolError('error', http.client.IncompleteRead(partial=b'abc', expected=4)),
             IncompleteRead,
-            '3 bytes read, 4 more expected'
+            '3 bytes read, 4 more expected',
         ),
         (
             lambda: urllib3.exceptions.ProtocolError('error', urllib3.exceptions.IncompleteRead(partial=3, expected=5)),
             IncompleteRead,
-            '3 bytes read, 5 more expected'
+            '3 bytes read, 5 more expected',
         ),
     ])
     def test_response_error_mapping(self, handler, monkeypatch, raised, expected, match):
@@ -1125,7 +1125,7 @@ class TestRequestHandlerValidation:
             ('https', False, {}),
         ]),
         (NoCheckRH, [('http', False, {})]),
-        (ValidationRH, [('http', UnsupportedRequest, {})])
+        (ValidationRH, [('http', UnsupportedRequest, {})]),
     ]
 
     PROXY_SCHEME_TESTS = [
@@ -1219,7 +1219,7 @@ class TestRequestHandlerValidation:
             ({'impersonate': ImpersonateTarget('chrome', None, None, None)}, False),
             ({'impersonate': ImpersonateTarget(None, None, None, None)}, False),
             ({'impersonate': ImpersonateTarget()}, False),
-            ({'impersonate': 'chrome'}, AssertionError)
+            ({'impersonate': 'chrome'}, AssertionError),
         ]),
         (NoCheckRH, 'http', [
             ({'cookiejar': 'notacookiejar'}, False),
@@ -1235,7 +1235,7 @@ class TestRequestHandlerValidation:
         ('Urllib', False, 'http'),
         ('Requests', False, 'http'),
         ('CurlCFFI', False, 'http'),
-        ('Websockets', False, 'ws')
+        ('Websockets', False, 'ws'),
     ], indirect=['handler'])
     def test_no_proxy(self, handler, fail, scheme):
         run_validation(handler, fail, Request(f'{scheme}://', proxies={'no': '127.0.0.1,github.com'}))
@@ -1246,7 +1246,7 @@ class TestRequestHandlerValidation:
         (HTTPSupportedRH, 'http'),
         ('Requests', 'http'),
         ('CurlCFFI', 'http'),
-        ('Websockets', 'ws')
+        ('Websockets', 'ws'),
     ], indirect=['handler'])
     def test_empty_proxy(self, handler, scheme):
         run_validation(handler, False, Request(f'{scheme}://', proxies={scheme: None}))
@@ -1258,7 +1258,7 @@ class TestRequestHandlerValidation:
         (HTTPSupportedRH, 'http'),
         ('Requests', 'http'),
         ('CurlCFFI', 'http'),
-        ('Websockets', 'ws')
+        ('Websockets', 'ws'),
     ], indirect=['handler'])
     def test_invalid_proxy_url(self, handler, scheme, proxy_url):
         run_validation(handler, UnsupportedRequest, Request(f'{scheme}://', proxies={scheme: proxy_url}))
@@ -1474,7 +1474,7 @@ class TestYoutubeDLNetworking:
     @pytest.mark.parametrize('proxy,expected', [
         ('http://127.0.0.1:8080', {'all': 'http://127.0.0.1:8080'}),
         ('', {'all': '__noproxy__'}),
-        (None, {'http': 'http://127.0.0.1:8081', 'https': 'http://127.0.0.1:8081'})  # env, set https
+        (None, {'http': 'http://127.0.0.1:8081', 'https': 'http://127.0.0.1:8081'}),  # env, set https
     ])
     def test_proxy(self, proxy, expected, monkeypatch):
         monkeypatch.setenv('HTTP_PROXY', 'http://127.0.0.1:8081')
@@ -1546,7 +1546,7 @@ class TestYoutubeDLNetworking:
         with FakeImpersonationRHYDL() as ydl:
             with pytest.raises(
                 RequestError,
-                match=r'Impersonate target "test" is not available'
+                match=r'Impersonate target "test" is not available',
             ):
                 ydl.urlopen(Request('http://', extensions={'impersonate': ImpersonateTarget('test', None, None, None)}))
 
@@ -1558,7 +1558,7 @@ class TestYoutubeDLNetworking:
                         pass
 
                     _SUPPORTED_URL_SCHEMES = ('http',)
-                    _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget('abc',): 'test'}
+                    _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget('abc'): 'test'}
                     _SUPPORTED_PROXY_SCHEMES = None
 
                 super().__init__(*args, **kwargs)
@@ -1567,14 +1567,14 @@ class TestYoutubeDLNetworking:
         with FakeHTTPRHYDL() as ydl:
             with pytest.raises(
                 RequestError,
-                match=r'Impersonate target "test" is not available'
+                match=r'Impersonate target "test" is not available',
             ):
                 ydl.urlopen(Request('http://', extensions={'impersonate': ImpersonateTarget('test', None, None, None)}))
 
     def test_raise_impersonate_error(self):
         with pytest.raises(
             YoutubeDLError,
-            match=r'Impersonate target "test" is not available'
+            match=r'Impersonate target "test" is not available',
         ):
             FakeYDL({'impersonate': ImpersonateTarget('test', None, None, None)})
 
@@ -1592,7 +1592,7 @@ class TestYoutubeDLNetworking:
         monkeypatch.setattr(FakeYDL, 'build_request_director', lambda cls, handlers, preferences=None: brh(cls, handlers=[IRH]))
 
         with FakeYDL({
-            'impersonate': ImpersonateTarget('abc', None, None, None)
+            'impersonate': ImpersonateTarget('abc', None, None, None),
         }) as ydl:
             rh = self.build_handler(ydl, IRH)
             assert rh.impersonate == ImpersonateTarget('abc', None, None, None)
@@ -1604,7 +1604,7 @@ class TestYoutubeDLNetworking:
                 def _send(self, request: Request):
                     pass
                 _SUPPORTED_URL_SCHEMES = ('http',)
-                _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget(target_client,): 'test'}
+                _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget(target_client): 'test'}
                 RH_KEY = target_client
                 RH_NAME = target_client
             handlers.append(TestRH)
@@ -1614,7 +1614,7 @@ class TestYoutubeDLNetworking:
             assert set(ydl._get_available_impersonate_targets()) == {
                 (ImpersonateTarget('xyz'), 'xyz'),
                 (ImpersonateTarget('abc'), 'abc'),
-                (ImpersonateTarget('asd'), 'asd')
+                (ImpersonateTarget('asd'), 'asd'),
             }
             assert ydl._impersonate_target_available(ImpersonateTarget('abc'))
             assert ydl._impersonate_target_available(ImpersonateTarget())
@@ -1837,7 +1837,7 @@ class TestRequest:
             extensions={'cookiejar': CookieJar()},
             headers={'Accept-Encoding': 'br'},
             proxies={'http': 'http://127.0.0.1'},
-            data=[b'123']
+            data=[b'123'],
         )
         req_copy = req.copy()
         assert req_copy is not req
@@ -1863,7 +1863,7 @@ class TestRequest:
         assert isinstance(req.copy(), AnotherRequest)
 
     def test_url(self):
-        req = Request(url='https://фtest.example.com/ some spaceв?ä=c',)
+        req = Request(url='https://фtest.example.com/ some spaceв?ä=c')
         assert req.url == 'https://xn--test-z6d.example.com/%20some%20space%D0%B2?%C3%A4=c'
 
         assert Request(url='//example.com').url == 'http://example.com'
@@ -1878,7 +1878,7 @@ class TestResponse:
         ('custom', 200, 'custom'),
         (None, 404, 'Not Found'),  # fallback status
         ('', 403, 'Forbidden'),
-        (None, 999, None)
+        (None, 999, None),
     ])
     def test_reason(self, reason, status, expected):
         res = Response(io.BytesIO(b''), url='test://', headers={}, status=status, reason=reason)
@@ -1933,7 +1933,7 @@ class TestImpersonateTarget:
 
     @pytest.mark.parametrize('target_str', [
         '-120', ':-12.0', '-12:-12', '-:-',
-        '::', 'a-c-d:', 'a-c-d:e-f-g', 'a:b:'
+        '::', 'a-c-d:', 'a-c-d:e-f-g', 'a:b:',
     ])
     def test_target_from_invalid_str(self, target_str):
         with pytest.raises(ValueError):
@@ -1949,7 +1949,7 @@ class TestImpersonateTarget:
         (ImpersonateTarget('abc', '120', 'xyz', None), 'abc-120:xyz'),
         (ImpersonateTarget('abc', None, 'xyz'), 'abc:xyz'),
         (ImpersonateTarget(None, None, 'xyz', '6.5'), ':xyz-6.5'),
-        (ImpersonateTarget('abc', ), 'abc'),
+        (ImpersonateTarget('abc'), 'abc'),
         (ImpersonateTarget(None, None, None, None), ''),
     ])
     def test_str(self, target, expected):

test/test_networking_utils.py

@@ -39,7 +39,7 @@ class TestNetworkingUtils:
         proxies = {
             'all': 'socks5://example.com',
             'http': 'http://example.com:1080',
-            'no': 'bypass.example.com,yt-dl.org'
+            'no': 'bypass.example.com,yt-dl.org',
         }
 
         assert select_proxy('https://example.com', proxies) == proxies['all']
@@ -54,7 +54,7 @@ class TestNetworkingUtils:
             'port': 1080,
             'rdns': True,
             'username': None,
-            'password': None
+            'password': None,
         }),
         ('socks5://user:@example.com:5555', {
             'proxytype': ProxyType.SOCKS5,
@@ -62,7 +62,7 @@ class TestNetworkingUtils:
             'port': 5555,
             'rdns': False,
             'username': 'user',
-            'password': ''
+            'password': '',
         }),
         ('socks4://u%40ser:pa%20ss@127.0.0.1:1080', {
             'proxytype': ProxyType.SOCKS4,
@@ -70,7 +70,7 @@ class TestNetworkingUtils:
             'port': 1080,
             'rdns': False,
             'username': 'u@ser',
-            'password': 'pa ss'
+            'password': 'pa ss',
         }),
         ('socks4a://:pa%20ss@127.0.0.1', {
             'proxytype': ProxyType.SOCKS4A,
@@ -78,8 +78,8 @@ class TestNetworkingUtils:
             'port': 1080,
             'rdns': True,
             'username': '',
-            'password': 'pa ss'
-        })
+            'password': 'pa ss',
+        }),
     ])
     def test_make_socks_proxy_opts(self, socks_proxy, expected):
         assert make_socks_proxy_opts(socks_proxy) == expected

test/test_overwrites.py

@@ -27,7 +27,7 @@ class TestOverwrites(unittest.TestCase):
             [
                 sys.executable, 'yt_dlp/__main__.py',
                 '-o', 'test.webm',
-                'https://www.youtube.com/watch?v=jNQXAC9IVRw'
+                'https://www.youtube.com/watch?v=jNQXAC9IVRw',
             ], cwd=root_dir, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         sout, serr = outp.communicate()
         self.assertTrue(b'has already been downloaded' in sout)
@@ -39,7 +39,7 @@ class TestOverwrites(unittest.TestCase):
             [
                 sys.executable, 'yt_dlp/__main__.py', '--yes-overwrites',
                 '-o', 'test.webm',
-                'https://www.youtube.com/watch?v=jNQXAC9IVRw'
+                'https://www.youtube.com/watch?v=jNQXAC9IVRw',
             ], cwd=root_dir, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         sout, serr = outp.communicate()
         self.assertTrue(b'has already been downloaded' not in sout)

test/test_plugins.py

@@ -31,7 +31,7 @@ class TestPlugins(unittest.TestCase):
 
         # don't load modules with underscore prefix
         self.assertFalse(
-            f'{PACKAGE_NAME}.extractor._ignore' in sys.modules.keys(),
+            f'{PACKAGE_NAME}.extractor._ignore' in sys.modules,
             'loaded module beginning with underscore')
         self.assertNotIn('IgnorePluginIE', plugins_ie.keys())
 

test/test_post_hooks.py

@@ -59,7 +59,7 @@ class TestPostHooks(unittest.TestCase):
 
     def hook_three(self, filename):
         self.files.append(filename)
-        raise Exception('Test exception for \'%s\'' % filename)
+        raise Exception(f'Test exception for \'{filename}\'')
 
     def tearDown(self):
         for f in self.files:

test/test_postprocessors.py

@@ -9,7 +9,7 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 
 from yt_dlp import YoutubeDL
-from yt_dlp.compat import compat_shlex_quote
+from yt_dlp.utils import shell_quote
 from yt_dlp.postprocessor import (
     ExecPP,
     FFmpegThumbnailsConvertorPP,
@@ -65,7 +65,7 @@ class TestExec(unittest.TestCase):
     def test_parse_cmd(self):
         pp = ExecPP(YoutubeDL(), '')
         info = {'filepath': 'file name'}
-        cmd = 'echo %s' % compat_shlex_quote(info['filepath'])
+        cmd = 'echo {}'.format(shell_quote(info['filepath']))
 
         self.assertEqual(pp.parse_cmd('echo', info), cmd)
         self.assertEqual(pp.parse_cmd('echo {}', info), cmd)
@@ -125,7 +125,8 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, chapters, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithSponsors(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(30, 40, 'preview'),
             self._sponsor_chapter(50, 60, 'filler')]
@@ -136,7 +137,8 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_SponsorBlockChapters(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'chapter', title='sb c1'),
             self._sponsor_chapter(15, 16, 'chapter', title='sb c2'),
             self._sponsor_chapter(30, 40, 'preview'),
@@ -149,10 +151,14 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_UniqueNamesForOverlappingSponsors(self):
-        chapters = self._chapters([120], ['c']) + [
-            self._sponsor_chapter(10, 45, 'sponsor'), self._sponsor_chapter(20, 40, 'selfpromo'),
-            self._sponsor_chapter(50, 70, 'sponsor'), self._sponsor_chapter(60, 85, 'selfpromo'),
-            self._sponsor_chapter(90, 120, 'selfpromo'), self._sponsor_chapter(100, 110, 'sponsor')]
+        chapters = [
+            *self._chapters([120], ['c']),
+            self._sponsor_chapter(10, 45, 'sponsor'),
+            self._sponsor_chapter(20, 40, 'selfpromo'),
+            self._sponsor_chapter(50, 70, 'sponsor'),
+            self._sponsor_chapter(60, 85, 'selfpromo'),
+            self._sponsor_chapter(90, 120, 'selfpromo'),
+            self._sponsor_chapter(100, 110, 'sponsor')]
         expected = self._chapters(
             [10, 20, 40, 45, 50, 60, 70, 85, 90, 100, 110, 120],
             ['c', '[SponsorBlock]: Sponsor', '[SponsorBlock]: Sponsor, Unpaid/Self Promotion',
@@ -172,7 +178,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, self._chapters([40], ['c']), cuts)
 
     def test_remove_marked_arrange_sponsors_ChapterWithSponsorsAndCuts(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(30, 40, 'selfpromo', remove=True),
             self._sponsor_chapter(50, 60, 'interaction')]
@@ -185,24 +192,29 @@ class TestModifyChaptersPP(unittest.TestCase):
     def test_remove_marked_arrange_sponsors_ChapterWithSponsorCutInTheMiddle(self):
         cuts = [self._sponsor_chapter(20, 30, 'selfpromo', remove=True),
                 self._chapter(40, 50, remove=True)]
-        chapters = self._chapters([70], ['c']) + [self._sponsor_chapter(10, 60, 'sponsor')] + cuts
+        chapters = [
+            *self._chapters([70], ['c']),
+            self._sponsor_chapter(10, 60, 'sponsor'),
+            *cuts]
         expected = self._chapters(
             [10, 40, 50], ['c', '[SponsorBlock]: Sponsor', 'c'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_ChapterWithCutHidingSponsor(self):
         cuts = [self._sponsor_chapter(20, 50, 'selfpromo', remove=True)]
-        chapters = self._chapters([60], ['c']) + [
+        chapters = [
+            *self._chapters([60], ['c']),
             self._sponsor_chapter(10, 20, 'intro'),
             self._sponsor_chapter(30, 40, 'sponsor'),
             self._sponsor_chapter(50, 60, 'outro'),
-        ] + cuts
+            *cuts]
         expected = self._chapters(
             [10, 20, 30], ['c', '[SponsorBlock]: Intermission/Intro Animation', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_ChapterWithAdjacentSponsors(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(20, 30, 'selfpromo'),
             self._sponsor_chapter(30, 40, 'interaction')]
@@ -213,7 +225,8 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithAdjacentCuts(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(20, 30, 'interaction', remove=True),
             self._chapter(30, 40, remove=True),
@@ -226,7 +239,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, expected, [self._chapter(20, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_ChapterWithOverlappingSponsors(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 30, 'sponsor'),
             self._sponsor_chapter(20, 50, 'selfpromo'),
             self._sponsor_chapter(40, 60, 'interaction')]
@@ -238,7 +252,8 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithOverlappingCuts(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 30, 'sponsor', remove=True),
             self._sponsor_chapter(20, 50, 'selfpromo', remove=True),
             self._sponsor_chapter(40, 60, 'interaction', remove=True)]
@@ -246,7 +261,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, self._chapters([20], ['c']), [self._chapter(10, 60, remove=True)])
 
     def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingSponsors(self):
-        chapters = self._chapters([170], ['c']) + [
+        chapters = [
+            *self._chapters([170], ['c']),
             self._sponsor_chapter(0, 30, 'intro'),
             self._sponsor_chapter(20, 50, 'sponsor'),
             self._sponsor_chapter(40, 60, 'selfpromo'),
@@ -267,7 +283,8 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingCuts(self):
-        chapters = self._chapters([170], ['c']) + [
+        chapters = [
+            *self._chapters([170], ['c']),
             self._chapter(0, 30, remove=True),
             self._sponsor_chapter(20, 50, 'sponsor', remove=True),
             self._chapter(40, 60, remove=True),
@@ -284,7 +301,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, self._chapters([20], ['c']), expected_cuts)
 
     def test_remove_marked_arrange_sponsors_OverlappingSponsorsDifferentTitlesAfterCut(self):
-        chapters = self._chapters([60], ['c']) + [
+        chapters = [
+            *self._chapters([60], ['c']),
             self._sponsor_chapter(10, 60, 'sponsor'),
             self._sponsor_chapter(10, 40, 'intro'),
             self._sponsor_chapter(30, 50, 'interaction'),
@@ -297,7 +315,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, expected, [self._chapter(30, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_SponsorsNoLongerOverlapAfterCut(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 30, 'sponsor'),
             self._sponsor_chapter(20, 50, 'interaction'),
             self._sponsor_chapter(30, 50, 'selfpromo', remove=True),
@@ -310,7 +329,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, expected, [self._chapter(30, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_SponsorsStillOverlapAfterCut(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 60, 'sponsor'),
             self._sponsor_chapter(20, 60, 'interaction'),
             self._sponsor_chapter(30, 50, 'selfpromo', remove=True)]
@@ -321,7 +341,8 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, expected, [self._chapter(30, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingSponsorsAndCuts(self):
-        chapters = self._chapters([200], ['c']) + [
+        chapters = [
+            *self._chapters([200], ['c']),
             self._sponsor_chapter(10, 40, 'sponsor'),
             self._sponsor_chapter(10, 30, 'intro'),
             self._chapter(20, 30, remove=True),
@@ -347,8 +368,9 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, expected_cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorOverlapsMultipleChapters(self):
-        chapters = (self._chapters([20, 40, 60, 80, 100], ['c1', 'c2', 'c3', 'c4', 'c5'])
-                    + [self._sponsor_chapter(10, 90, 'sponsor')])
+        chapters = [
+            *self._chapters([20, 40, 60, 80, 100], ['c1', 'c2', 'c3', 'c4', 'c5']),
+            self._sponsor_chapter(10, 90, 'sponsor')]
         expected = self._chapters([10, 90, 100], ['c1', '[SponsorBlock]: Sponsor', 'c5'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -359,9 +381,10 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorsWithinSomeChaptersAndOverlappingOthers(self):
-        chapters = (self._chapters([10, 40, 60, 80], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(20, 30, 'sponsor'),
-                       self._sponsor_chapter(50, 70, 'selfpromo')])
+        chapters = [
+            *self._chapters([10, 40, 60, 80], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(20, 30, 'sponsor'),
+            self._sponsor_chapter(50, 70, 'selfpromo')]
         expected = self._chapters([10, 20, 30, 40, 50, 70, 80],
                                   ['c1', 'c2', '[SponsorBlock]: Sponsor', 'c2', 'c3',
                                    '[SponsorBlock]: Unpaid/Self Promotion', 'c4'])
@@ -374,8 +397,9 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_ChaptersAfterLastSponsor(self):
-        chapters = (self._chapters([20, 40, 50, 60], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(10, 30, 'music_offtopic')])
+        chapters = [
+            *self._chapters([20, 40, 50, 60], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(10, 30, 'music_offtopic')]
         expected = self._chapters(
             [10, 30, 40, 50, 60],
             ['c1', '[SponsorBlock]: Non-Music Section', 'c2', 'c3', 'c4'])
@@ -388,8 +412,9 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorStartsAtChapterStart(self):
-        chapters = (self._chapters([10, 20, 40], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(20, 30, 'sponsor')])
+        chapters = [
+            *self._chapters([10, 20, 40], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(20, 30, 'sponsor')]
         expected = self._chapters([10, 20, 30, 40], ['c1', 'c2', '[SponsorBlock]: Sponsor', 'c3'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -400,8 +425,9 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorEndsAtChapterEnd(self):
-        chapters = (self._chapters([10, 30, 40], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(20, 30, 'sponsor')])
+        chapters = [
+            *self._chapters([10, 30, 40], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(20, 30, 'sponsor')]
         expected = self._chapters([10, 20, 30, 40], ['c1', 'c2', '[SponsorBlock]: Sponsor', 'c3'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -412,8 +438,9 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorCoincidesWithChapters(self):
-        chapters = (self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(10, 30, 'sponsor')])
+        chapters = [
+            *self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(10, 30, 'sponsor')]
         expected = self._chapters([10, 30, 40], ['c1', '[SponsorBlock]: Sponsor', 'c4'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -424,8 +451,9 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorsAtVideoBoundaries(self):
-        chapters = (self._chapters([20, 40, 60], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(0, 10, 'intro'), self._sponsor_chapter(50, 60, 'outro')])
+        chapters = [
+            *self._chapters([20, 40, 60], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(0, 10, 'intro'), self._sponsor_chapter(50, 60, 'outro')]
         expected = self._chapters(
             [10, 20, 40, 50, 60], ['[SponsorBlock]: Intermission/Intro Animation', 'c1', 'c2', 'c3', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
@@ -437,8 +465,10 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorsOverlapChaptersAtVideoBoundaries(self):
-        chapters = (self._chapters([10, 40, 50], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(0, 20, 'intro'), self._sponsor_chapter(30, 50, 'outro')])
+        chapters = [
+            *self._chapters([10, 40, 50], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(0, 20, 'intro'),
+            self._sponsor_chapter(30, 50, 'outro')]
         expected = self._chapters(
             [20, 30, 50], ['[SponsorBlock]: Intermission/Intro Animation', 'c2', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
@@ -450,8 +480,10 @@ class TestModifyChaptersPP(unittest.TestCase):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_EverythingSponsored(self):
-        chapters = (self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(0, 20, 'intro'), self._sponsor_chapter(20, 40, 'outro')])
+        chapters = [
+            *self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(0, 20, 'intro'),
+            self._sponsor_chapter(20, 40, 'outro')]
         expected = self._chapters([20, 40], ['[SponsorBlock]: Intermission/Intro Animation', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -491,38 +523,39 @@ class TestModifyChaptersPP(unittest.TestCase):
             chapters, self._chapters([2.5], ['c2']), cuts)
 
     def test_remove_marked_arrange_sponsors_TinyChaptersResultingFromSponsorOverlapAreIgnored(self):
-        chapters = self._chapters([1, 3, 4], ['c1', 'c2', 'c3']) + [
+        chapters = [
+            *self._chapters([1, 3, 4], ['c1', 'c2', 'c3']),
             self._sponsor_chapter(1.5, 2.5, 'sponsor')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([1.5, 2.5, 4], ['c1', '[SponsorBlock]: Sponsor', 'c3']), [])
 
     def test_remove_marked_arrange_sponsors_TinySponsorsOverlapsAreIgnored(self):
-        chapters = self._chapters([2, 3, 5], ['c1', 'c2', 'c3']) + [
+        chapters = [
+            *self._chapters([2, 3, 5], ['c1', 'c2', 'c3']),
             self._sponsor_chapter(1, 3, 'sponsor'),
-            self._sponsor_chapter(2.5, 4, 'selfpromo')
-        ]
+            self._sponsor_chapter(2.5, 4, 'selfpromo')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([1, 3, 4, 5], [
                 'c1', '[SponsorBlock]: Sponsor', '[SponsorBlock]: Unpaid/Self Promotion', 'c3']), [])
 
     def test_remove_marked_arrange_sponsors_TinySponsorsPrependedToTheNextSponsor(self):
-        chapters = self._chapters([4], ['c']) + [
+        chapters = [
+            *self._chapters([4], ['c']),
             self._sponsor_chapter(1.5, 2, 'sponsor'),
-            self._sponsor_chapter(2, 4, 'selfpromo')
-        ]
+            self._sponsor_chapter(2, 4, 'selfpromo')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([1.5, 4], ['c', '[SponsorBlock]: Unpaid/Self Promotion']), [])
 
     def test_remove_marked_arrange_sponsors_SmallestSponsorInTheOverlapGetsNamed(self):
         self._pp._sponsorblock_chapter_title = '[SponsorBlock]: %(name)s'
-        chapters = self._chapters([10], ['c']) + [
+        chapters = [
+            *self._chapters([10], ['c']),
             self._sponsor_chapter(2, 8, 'sponsor'),
-            self._sponsor_chapter(4, 6, 'selfpromo')
-        ]
+            self._sponsor_chapter(4, 6, 'selfpromo')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([2, 4, 6, 8, 10], [
                 'c', '[SponsorBlock]: Sponsor', '[SponsorBlock]: Unpaid/Self Promotion',
-                '[SponsorBlock]: Sponsor', 'c'
+                '[SponsorBlock]: Sponsor', 'c',
             ]), [])
 
     def test_make_concat_opts_CommonCase(self):

test/test_socks.py

@@ -95,7 +95,7 @@ class Socks5ProxyHandler(StreamRequestHandler, SocksProxyHandler):
             return
 
         elif Socks5Auth.AUTH_USER_PASS in methods:
-            self.connection.sendall(struct.pack("!BB", SOCKS5_VERSION, Socks5Auth.AUTH_USER_PASS))
+            self.connection.sendall(struct.pack('!BB', SOCKS5_VERSION, Socks5Auth.AUTH_USER_PASS))
 
             _, user_len = struct.unpack('!BB', self.connection.recv(2))
             username = self.connection.recv(user_len).decode()
@@ -174,7 +174,7 @@ class Socks4ProxyHandler(StreamRequestHandler, SocksProxyHandler):
         if 0x0 < dest_ip <= 0xFF:
             use_remote_dns = True
         else:
-            socks_info['ipv4_address'] = socket.inet_ntoa(struct.pack("!I", dest_ip))
+            socks_info['ipv4_address'] = socket.inet_ntoa(struct.pack('!I', dest_ip))
 
         user_id = self._read_until_null().decode()
         if user_id != (self.socks_kwargs.get('user_id') or ''):
@@ -291,7 +291,7 @@ def ctx(request):
         ('Urllib', 'http'),
         ('Requests', 'http'),
         ('Websockets', 'ws'),
-        ('CurlCFFI', 'http')
+        ('CurlCFFI', 'http'),
     ], indirect=True)
 class TestSocks4Proxy:
     def test_socks4_no_auth(self, handler, ctx):
@@ -366,7 +366,7 @@ class TestSocks4Proxy:
         ('Urllib', 'http'),
         ('Requests', 'http'),
         ('Websockets', 'ws'),
-        ('CurlCFFI', 'http')
+        ('CurlCFFI', 'http'),
     ], indirect=True)
 class TestSocks5Proxy:
 

test/test_subtitles.py

@@ -40,12 +40,11 @@ class BaseTestSubtitles(unittest.TestCase):
         self.ie = self.IE()
         self.DL.add_info_extractor(self.ie)
         if not self.IE.working():
-            print('Skipping: %s marked as not _WORKING' % self.IE.ie_key())
+            print(f'Skipping: {self.IE.ie_key()} marked as not _WORKING')
             self.skipTest('IE marked as not _WORKING')
 
     def getInfoDict(self):
-        info_dict = self.DL.extract_info(self.url, download=False)
-        return info_dict
+        return self.DL.extract_info(self.url, download=False)
 
     def getSubtitles(self):
         info_dict = self.getInfoDict()
@@ -87,7 +86,7 @@ class TestYoutubeSubtitles(BaseTestSubtitles):
         self.assertEqual(md5(subtitles['en']), 'ae1bd34126571a77aabd4d276b28044d')
         self.assertEqual(md5(subtitles['it']), '0e0b667ba68411d88fd1c5f4f4eab2f9')
         for lang in ['fr', 'de']:
-            self.assertTrue(subtitles.get(lang) is not None, 'Subtitles for \'%s\' not extracted' % lang)
+            self.assertTrue(subtitles.get(lang) is not None, f'Subtitles for \'{lang}\' not extracted')
 
     def _test_subtitles_format(self, fmt, md5_hash, lang='en'):
         self.DL.params['writesubtitles'] = True
@@ -157,7 +156,7 @@ class TestDailymotionSubtitles(BaseTestSubtitles):
         self.assertEqual(md5(subtitles['en']), '976553874490cba125086bbfea3ff76f')
         self.assertEqual(md5(subtitles['fr']), '594564ec7d588942e384e920e5341792')
         for lang in ['es', 'fr', 'de']:
-            self.assertTrue(subtitles.get(lang) is not None, 'Subtitles for \'%s\' not extracted' % lang)
+            self.assertTrue(subtitles.get(lang) is not None, f'Subtitles for \'{lang}\' not extracted')
 
     def test_nosubtitles(self):
         self.DL.expect_warning('video doesn\'t have subtitles')
@@ -182,7 +181,7 @@ class TestTedSubtitles(BaseTestSubtitles):
         self.assertEqual(md5(subtitles['en']), '4262c1665ff928a2dada178f62cb8d14')
         self.assertEqual(md5(subtitles['fr']), '66a63f7f42c97a50f8c0e90bc7797bb5')
         for lang in ['es', 'fr', 'de']:
-            self.assertTrue(subtitles.get(lang) is not None, 'Subtitles for \'%s\' not extracted' % lang)
+            self.assertTrue(subtitles.get(lang) is not None, f'Subtitles for \'{lang}\' not extracted')
 
 
 @is_download_test

test/test_traversal.py

@@ -31,7 +31,7 @@ class TestTraversal:
             'allow tuple path'
         assert traverse_obj(_TEST_DATA, ['str']) == 'str', \
             'allow list path'
-        assert traverse_obj(_TEST_DATA, (value for value in ("str",))) == 'str', \
+        assert traverse_obj(_TEST_DATA, (value for value in ('str',))) == 'str', \
             'allow iterable path'
         assert traverse_obj(_TEST_DATA, 'str') == 'str', \
             'single items should be treated as a path'
@@ -70,7 +70,7 @@ class TestTraversal:
 
     def test_traversal_set(self):
         # transformation/type, like `expected_type`
-        assert traverse_obj(_TEST_DATA, (..., {str.upper}, )) == ['STR'], \
+        assert traverse_obj(_TEST_DATA, (..., {str.upper})) == ['STR'], \
             'Function in set should be a transformation'
         assert traverse_obj(_TEST_DATA, (..., {str})) == ['str'], \
             'Type in set should be a type filter'
@@ -276,7 +276,7 @@ class TestTraversal:
             '`...` should result in string (same value) if `traverse_string`'
         assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', slice(0, None, 2)), traverse_string=True) == 'sr', \
             '`slice` should result in string if `traverse_string`'
-        assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == "s"), traverse_string=True) == 'str', \
+        assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == 's'), traverse_string=True) == 'str', \
             'function should result in string if `traverse_string`'
         assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', (0, 2)), traverse_string=True) == ['s', 'r'], \
             'branching should result in list if `traverse_string`'

test/test_update.py

@@ -78,11 +78,11 @@ TEST_API_DATA = {
 
 TEST_LOCKFILE_COMMENT = '# This file is used for regulating self-update'
 
-TEST_LOCKFILE_V1 = r'''%s
+TEST_LOCKFILE_V1 = rf'''{TEST_LOCKFILE_COMMENT}
 lock 2022.08.18.36 .+ Python 3\.6
 lock 2023.11.16 (?!win_x86_exe).+ Python 3\.7
 lock 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
-''' % TEST_LOCKFILE_COMMENT
+'''
 
 TEST_LOCKFILE_V2_TMPL = r'''%s
 lockV2 yt-dlp/yt-dlp 2022.08.18.36 .+ Python 3\.6
@@ -98,12 +98,12 @@ TEST_LOCKFILE_V2 = TEST_LOCKFILE_V2_TMPL % TEST_LOCKFILE_COMMENT
 
 TEST_LOCKFILE_ACTUAL = TEST_LOCKFILE_V2_TMPL % TEST_LOCKFILE_V1.rstrip('\n')
 
-TEST_LOCKFILE_FORK = r'''%s# Test if a fork blocks updates to non-numeric tags
+TEST_LOCKFILE_FORK = rf'''{TEST_LOCKFILE_ACTUAL}# Test if a fork blocks updates to non-numeric tags
 lockV2 fork/yt-dlp pr0000 .+ Python 3.6
 lockV2 fork/yt-dlp pr1234 (?!win_x86_exe).+ Python 3\.7
 lockV2 fork/yt-dlp pr1234 win_x86_exe .+ Windows-(?:Vista|2008Server)
 lockV2 fork/yt-dlp pr9999 .+ Python 3.11
-''' % TEST_LOCKFILE_ACTUAL
+'''
 
 
 class FakeUpdater(Updater):

test/test_utils.py

@@ -276,8 +276,8 @@ class TestUtil(unittest.TestCase):
             self.assertEqual(expand_path(env('HOME')), os.getenv('HOME'))
             self.assertEqual(expand_path('~'), os.getenv('HOME'))
             self.assertEqual(
-                expand_path('~/%s' % env('yt_dlp_EXPATH_PATH')),
-                '%s/expanded' % os.getenv('HOME'))
+                expand_path('~/{}'.format(env('yt_dlp_EXPATH_PATH'))),
+                '{}/expanded'.format(os.getenv('HOME')))
         finally:
             os.environ['HOME'] = old_home or ''
 
@@ -356,12 +356,12 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(datetime_from_str('now+23hours', precision='hour'), datetime_from_str('now+23hours', precision='auto'))
 
     def test_daterange(self):
-        _20century = DateRange("19000101", "20000101")
-        self.assertFalse("17890714" in _20century)
-        _ac = DateRange("00010101")
-        self.assertTrue("19690721" in _ac)
-        _firstmilenium = DateRange(end="10000101")
-        self.assertTrue("07110427" in _firstmilenium)
+        _20century = DateRange('19000101', '20000101')
+        self.assertFalse('17890714' in _20century)
+        _ac = DateRange('00010101')
+        self.assertTrue('19690721' in _ac)
+        _firstmilenium = DateRange(end='10000101')
+        self.assertTrue('07110427' in _firstmilenium)
 
     def test_unified_dates(self):
         self.assertEqual(unified_strdate('December 21, 2010'), '20101221')
@@ -506,7 +506,7 @@ class TestUtil(unittest.TestCase):
         self.assertRaises(ExtractorError, xpath_attr, doc, 'div/p', 'y', fatal=True)
 
     def test_smuggle_url(self):
-        data = {"ö": "ö", "abc": [3]}
+        data = {'ö': 'ö', 'abc': [3]}
         url = 'https://foo.bar/baz?x=y#a'
         smug_url = smuggle_url(url, data)
         unsmug_url, unsmug_data = unsmuggle_url(smug_url)
@@ -784,7 +784,7 @@ class TestUtil(unittest.TestCase):
     def test_strip_jsonp(self):
         stripped = strip_jsonp('cb ([ {"id":"532cb",\n\n\n"x":\n3}\n]\n);')
         d = json.loads(stripped)
-        self.assertEqual(d, [{"id": "532cb", "x": 3}])
+        self.assertEqual(d, [{'id': '532cb', 'x': 3}])
 
         stripped = strip_jsonp('parseMetadata({"STATUS":"OK"})\n\n\n//epc')
         d = json.loads(stripped)
@@ -922,19 +922,19 @@ class TestUtil(unittest.TestCase):
     def test_normalize_url(self):
         self.assertEqual(
             normalize_url('http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavré_FD.mp4'),
-            'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4'
+            'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4',
         )
         self.assertEqual(
             normalize_url('http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erklärt/Das-Erste/Video?documentId=22673108&bcastId=5290'),
-            'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290'
+            'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290',
         )
         self.assertEqual(
             normalize_url('http://тест.рф/фрагмент'),
-            'http://xn--e1aybc.xn--p1ai/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82'
+            'http://xn--e1aybc.xn--p1ai/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82',
         )
         self.assertEqual(
             normalize_url('http://тест.рф/абв?абв=абв#абв'),
-            'http://xn--e1aybc.xn--p1ai/%D0%B0%D0%B1%D0%B2?%D0%B0%D0%B1%D0%B2=%D0%B0%D0%B1%D0%B2#%D0%B0%D0%B1%D0%B2'
+            'http://xn--e1aybc.xn--p1ai/%D0%B0%D0%B1%D0%B2?%D0%B0%D0%B1%D0%B2=%D0%B0%D0%B1%D0%B2#%D0%B0%D0%B1%D0%B2',
         )
         self.assertEqual(normalize_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
 
@@ -979,7 +979,7 @@ class TestUtil(unittest.TestCase):
                     'e': 'false',
                     'f': '"false"',
                     'g': 'var',
-                }
+                },
             )),
             {
                 'null': None,
@@ -988,8 +988,8 @@ class TestUtil(unittest.TestCase):
                 'trueStr': 'true',
                 'false': False,
                 'falseStr': 'false',
-                'unresolvedVar': 'var'
-            }
+                'unresolvedVar': 'var',
+            },
         )
 
         self.assertDictEqual(
@@ -1005,14 +1005,14 @@ class TestUtil(unittest.TestCase):
                     'b': '"123"',
                     'c': '1.23',
                     'd': '"1.23"',
-                }
+                },
             )),
             {
                 'int': 123,
                 'intStr': '123',
                 'float': 1.23,
                 'floatStr': '1.23',
-            }
+            },
         )
 
         self.assertDictEqual(
@@ -1028,14 +1028,14 @@ class TestUtil(unittest.TestCase):
                     'b': '"{}"',
                     'c': '[]',
                     'd': '"[]"',
-                }
+                },
             )),
             {
                 'object': {},
                 'objectStr': '{}',
                 'array': [],
                 'arrayStr': '[]',
-            }
+            },
         )
 
     def test_js_to_json_realworld(self):
@@ -1081,7 +1081,7 @@ class TestUtil(unittest.TestCase):
 
     def test_js_to_json_edgecases(self):
         on = js_to_json("{abc_def:'1\\'\\\\2\\\\\\'3\"4'}")
-        self.assertEqual(json.loads(on), {"abc_def": "1'\\2\\'3\"4"})
+        self.assertEqual(json.loads(on), {'abc_def': "1'\\2\\'3\"4"})
 
         on = js_to_json('{"abc": true}')
         self.assertEqual(json.loads(on), {'abc': True})
@@ -1113,9 +1113,9 @@ class TestUtil(unittest.TestCase):
             'c': 0,
             'd': 42.42,
             'e': [],
-            'f': "abc",
-            'g': "",
-            '42': 42
+            'f': 'abc',
+            'g': '',
+            '42': 42,
         })
 
         on = js_to_json('["abc", "def",]')
@@ -1209,8 +1209,8 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(json.loads(js_to_json('Array(5, 10)')), [5, 10])
         self.assertEqual(json.loads(js_to_json('new Array(15,5)')), [15, 5])
         self.assertEqual(json.loads(js_to_json('new Map([Array(5, 10),new Array(15,5)])')), {'5': 10, '15': 5})
-        self.assertEqual(json.loads(js_to_json('new Date("123")')), "123")
-        self.assertEqual(json.loads(js_to_json('new Date(\'2023-10-19\')')), "2023-10-19")
+        self.assertEqual(json.loads(js_to_json('new Date("123")')), '123')
+        self.assertEqual(json.loads(js_to_json('new Date(\'2023-10-19\')')), '2023-10-19')
 
     def test_extract_attributes(self):
         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
@@ -1265,7 +1265,7 @@ class TestUtil(unittest.TestCase):
     def test_args_to_str(self):
         self.assertEqual(
             args_to_str(['foo', 'ba/r', '-baz', '2 be', '']),
-            'foo ba/r -baz \'2 be\' \'\'' if compat_os_name != 'nt' else 'foo ba/r -baz "2 be" ""'
+            'foo ba/r -baz \'2 be\' \'\'' if compat_os_name != 'nt' else 'foo ba/r -baz "2 be" ""',
         )
 
     def test_parse_filesize(self):
@@ -1348,10 +1348,10 @@ ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
         self.assertTrue(is_html(  # UTF-8 with BOM
             b'\xef\xbb\xbf<!DOCTYPE foo>\xaaa'))
         self.assertTrue(is_html(  # UTF-16-LE
-            b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00'
+            b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00',
         ))
         self.assertTrue(is_html(  # UTF-16-BE
-            b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4'
+            b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4',
         ))
         self.assertTrue(is_html(  # UTF-32-BE
             b'\x00\x00\xFE\xFF\x00\x00\x00<\x00\x00\x00h\x00\x00\x00t\x00\x00\x00m\x00\x00\x00l\x00\x00\x00>\x00\x00\x00\xe4'))
@@ -1935,7 +1935,7 @@ Line 1
                             with locked_file(FILE, test_mode, False):
                                 pass
                         except (BlockingIOError, PermissionError):
-                            if not testing_write:  # FIXME
+                            if not testing_write:  # FIXME: blocked read access
                                 print(f'Known issue: Exclusive lock ({lock_mode}) blocks read access ({test_mode})')
                                 continue
                             self.assertTrue(testing_write, f'{test_mode} is blocked by {lock_mode}')
@@ -2003,7 +2003,7 @@ Line 1
                          msg='int fn with expected_type int should give int')
         self.assertEqual(try_call(lambda: 1, expected_type=dict), None,
                          msg='int fn with wrong expected_type should give None')
-        self.assertEqual(try_call(total, args=(0, 1, 0, ), expected_type=int), 1,
+        self.assertEqual(try_call(total, args=(0, 1, 0), expected_type=int), 1,
                          msg='fn should accept arglist')
         self.assertEqual(try_call(total, kwargs={'a': 0, 'b': 1, 'c': 0}, expected_type=int), 1,
                          msg='fn should accept kwargs')

test/test_websockets.py

@@ -297,14 +297,14 @@ class TestWebsSocketRequestHandlerConformance:
             'client_certificate': os.path.join(MTLS_CERT_DIR, 'client.crt'),
             'client_certificate_key': os.path.join(MTLS_CERT_DIR, 'clientencrypted.key'),
             'client_certificate_password': 'foobar',
-        }
+        },
     ))
     def test_mtls(self, handler, client_cert):
         with handler(
             # Disable client-side validation of unacceptable self-signed testcert.pem
             # The test is of a check on the server side, so unaffected
             verify=False,
-            client_cert=client_cert
+            client_cert=client_cert,
         ) as rh:
             ws_validate_and_send(rh, Request(self.mtls_wss_base_url)).close()
 

test/test_youtube_misc.py

@@ -13,7 +13,7 @@ from yt_dlp.extractor import YoutubeIE
 
 class TestYoutubeMisc(unittest.TestCase):
     def test_youtube_extract(self):
-        assertExtractId = lambda url, id: self.assertEqual(YoutubeIE.extract_id(url), id)
+        assertExtractId = lambda url, video_id: self.assertEqual(YoutubeIE.extract_id(url), video_id)
         assertExtractId('http://www.youtube.com/watch?&v=BaW_jenozKc', 'BaW_jenozKc')
         assertExtractId('https://www.youtube.com/watch?&v=BaW_jenozKc', 'BaW_jenozKc')
         assertExtractId('https://www.youtube.com/watch?feature=player_embedded&v=BaW_jenozKc', 'BaW_jenozKc')

test/test_youtube_signature.py

@@ -46,17 +46,17 @@ _SIG_TESTS = [
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflBb0OQx.js',
         84,
-        '123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQ0STUVWXYZ!"#$%&\'()*+,@./:;<=>'
+        '123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQ0STUVWXYZ!"#$%&\'()*+,@./:;<=>',
     ),
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vfl9FYC6l.js',
         83,
-        '123456789abcdefghijklmnopqr0tuvwxyzABCDETGHIJKLMNOPQRS>UVWXYZ!"#$%&\'()*+,-./:;<=F'
+        '123456789abcdefghijklmnopqr0tuvwxyzABCDETGHIJKLMNOPQRS>UVWXYZ!"#$%&\'()*+,-./:;<=F',
     ),
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflCGk6yw/html5player.js',
         '4646B5181C6C3020DF1D9C7FCFEA.AD80ABF70C39BD369CCCAE780AFBB98FA6B6CB42766249D9488C288',
-        '82C8849D94266724DC6B6AF89BBFA087EACCD963.B93C07FBA084ACAEFCF7C9D1FD0203C6C1815B6B'
+        '82C8849D94266724DC6B6AF89BBFA087EACCD963.B93C07FBA084ACAEFCF7C9D1FD0203C6C1815B6B',
     ),
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflKjOTVq/html5player.js',
@@ -207,7 +207,7 @@ class TestSignature(unittest.TestCase):
 def t_factory(name, sig_func, url_pattern):
     def make_tfunc(url, sig_input, expected_sig):
         m = url_pattern.match(url)
-        assert m, '%r should follow URL format' % url
+        assert m, f'{url!r} should follow URL format'
         test_id = m.group('id')
 
         def test_func(self):

yt_dlp/YoutubeDL.py

@@ -109,7 +109,6 @@ from .utils import (
     determine_protocol,
     encode_compat_str,
     encodeFilename,
-    error_to_compat_str,
     escapeHTML,
     expand_path,
     extract_basic_auth,
@@ -583,7 +582,7 @@ class YoutubeDL:
         'player_url', 'protocol', 'fragment_base_url', 'fragments', 'is_from_start', 'is_dash_periods', 'request_data',
         'preference', 'language', 'language_preference', 'quality', 'source_preference', 'cookies',
         'http_headers', 'stretched_ratio', 'no_resume', 'has_drm', 'extra_param_to_segment_url', 'hls_aes', 'downloader_options',
-        'page_url', 'app', 'play_path', 'tc_url', 'flash_version', 'rtmp_live', 'rtmp_conn', 'rtmp_protocol', 'rtmp_real_time'
+        'page_url', 'app', 'play_path', 'tc_url', 'flash_version', 'rtmp_live', 'rtmp_conn', 'rtmp_protocol', 'rtmp_real_time',
     }
     _deprecated_multivalue_fields = {
         'album_artist': 'album_artists',
@@ -594,7 +593,7 @@ class YoutubeDL:
     }
     _format_selection_exts = {
         'audio': set(MEDIA_EXTENSIONS.common_audio),
-        'video': set(MEDIA_EXTENSIONS.common_video + ('3gp', )),
+        'video': {*MEDIA_EXTENSIONS.common_video, '3gp'},
         'storyboards': set(MEDIA_EXTENSIONS.storyboards),
     }
 
@@ -628,7 +627,7 @@ class YoutubeDL:
             error=sys.stderr,
             screen=sys.stderr if self.params.get('quiet') else stdout,
             console=None if compat_os_name == 'nt' else next(
-                filter(supports_terminal_sequences, (sys.stderr, sys.stdout)), None)
+                filter(supports_terminal_sequences, (sys.stderr, sys.stdout)), None),
         )
 
         try:
@@ -679,9 +678,9 @@ class YoutubeDL:
                 width_args = [] if width is None else ['-w', str(width)]
                 sp_kwargs = {'stdin': subprocess.PIPE, 'stdout': slave, 'stderr': self._out_files.error}
                 try:
-                    self._output_process = Popen(['bidiv'] + width_args, **sp_kwargs)
+                    self._output_process = Popen(['bidiv', *width_args], **sp_kwargs)
                 except OSError:
-                    self._output_process = Popen(['fribidi', '-c', 'UTF-8'] + width_args, **sp_kwargs)
+                    self._output_process = Popen(['fribidi', '-c', 'UTF-8', *width_args], **sp_kwargs)
                 self._output_channel = os.fdopen(master, 'rb')
             except OSError as ose:
                 if ose.errno == errno.ENOENT:
@@ -822,8 +821,7 @@ class YoutubeDL:
             )
             self.report_warning(
                 'Long argument string detected. '
-                'Use -- to separate parameters and URLs, like this:\n%s' %
-                shell_quote(correct_argv))
+                f'Use -- to separate parameters and URLs, like this:\n{shell_quote(correct_argv)}')
 
     def add_info_extractor(self, ie):
         """Add an InfoExtractor object to the end of the list."""
@@ -922,7 +920,7 @@ class YoutubeDL:
         if (self.params.get('quiet') if quiet is None else quiet) and not self.params.get('verbose'):
             return
         self._write_string(
-            '%s%s' % (self._bidi_workaround(message), ('' if skip_eol else '\n')),
+            '{}{}'.format(self._bidi_workaround(message), ('' if skip_eol else '\n')),
             self._out_files.screen, only_once=only_once)
 
     def to_stderr(self, message, only_once=False):
@@ -1045,10 +1043,10 @@ class YoutubeDL:
         return self._format_text(self._out_files.error, self._allow_colors.error, *args, **kwargs)
 
     def report_warning(self, message, only_once=False):
-        '''
+        """
         Print the message to stderr, it will be prefixed with 'WARNING:'
         If stderr is a tty file the 'WARNING:' will be colored
-        '''
+        """
         if self.params.get('logger') is not None:
             self.params['logger'].warning(message)
         else:
@@ -1066,14 +1064,14 @@ class YoutubeDL:
         self.to_stderr(f'{self._format_err("Deprecated Feature:", self.Styles.ERROR)} {message}', True)
 
     def report_error(self, message, *args, **kwargs):
-        '''
+        """
         Do the same as trouble, but prefixes the message with 'ERROR:', colored
         in red if stderr is a tty file.
-        '''
+        """
         self.trouble(f'{self._format_err("ERROR:", self.Styles.ERROR)} {message}', *args, **kwargs)
 
     def write_debug(self, message, only_once=False):
-        '''Log debug message or Print message to stderr'''
+        """Log debug message or Print message to stderr"""
         if not self.params.get('verbose', False):
             return
         message = f'[debug] {message}'
@@ -1085,14 +1083,14 @@ class YoutubeDL:
     def report_file_already_downloaded(self, file_name):
         """Report file has already been fully downloaded."""
         try:
-            self.to_screen('[download] %s has already been downloaded' % file_name)
+            self.to_screen(f'[download] {file_name} has already been downloaded')
         except UnicodeEncodeError:
             self.to_screen('[download] The file has already been downloaded')
 
     def report_file_delete(self, file_name):
         """Report that existing file will be deleted."""
         try:
-            self.to_screen('Deleting existing file %s' % file_name)
+            self.to_screen(f'Deleting existing file {file_name}')
         except UnicodeEncodeError:
             self.to_screen('Deleting existing file')
 
@@ -1147,7 +1145,7 @@ class YoutubeDL:
 
     @staticmethod
     def escape_outtmpl(outtmpl):
-        ''' Escape any remaining strings like %s, %abc% etc. '''
+        """ Escape any remaining strings like %s, %abc% etc. """
         return re.sub(
             STR_FORMAT_RE_TMPL.format('', '(?![%(\0])'),
             lambda mobj: ('' if mobj.group('has_key') else '%') + mobj.group(0),
@@ -1155,7 +1153,7 @@ class YoutubeDL:
 
     @classmethod
     def validate_outtmpl(cls, outtmpl):
-        ''' @return None or Exception object '''
+        """ @return None or Exception object """
         outtmpl = re.sub(
             STR_FORMAT_RE_TMPL.format('[^)]*', '[ljhqBUDS]'),
             lambda mobj: f'{mobj.group(0)[:-1]}s',
@@ -1208,13 +1206,13 @@ class YoutubeDL:
         }
         # Field is of the form key1.key2...
         # where keys (except first) can be string, int, slice or "{field, ...}"
-        FIELD_INNER_RE = r'(?:\w+|%(num)s|%(num)s?(?::%(num)s?){1,2})' % {'num': r'(?:-?\d+)'}
-        FIELD_RE = r'\w*(?:\.(?:%(inner)s|{%(field)s(?:,%(field)s)*}))*' % {
+        FIELD_INNER_RE = r'(?:\w+|%(num)s|%(num)s?(?::%(num)s?){1,2})' % {'num': r'(?:-?\d+)'}  # noqa: UP031
+        FIELD_RE = r'\w*(?:\.(?:%(inner)s|{%(field)s(?:,%(field)s)*}))*' % {  # noqa: UP031
             'inner': FIELD_INNER_RE,
-            'field': rf'\w*(?:\.{FIELD_INNER_RE})*'
+            'field': rf'\w*(?:\.{FIELD_INNER_RE})*',
         }
         MATH_FIELD_RE = rf'(?:{FIELD_RE}|-?{NUMBER_RE})'
-        MATH_OPERATORS_RE = r'(?:%s)' % '|'.join(map(re.escape, MATH_FUNCTIONS.keys()))
+        MATH_OPERATORS_RE = r'(?:{})'.format('|'.join(map(re.escape, MATH_FUNCTIONS.keys())))
         INTERNAL_FORMAT_RE = re.compile(rf'''(?xs)
             (?P<negate>-)?
             (?P<fields>{FIELD_RE})
@@ -1337,7 +1335,7 @@ class YoutubeDL:
                     value, default = None, na
 
             fmt = outer_mobj.group('format')
-            if fmt == 's' and last_field in field_size_compat_map.keys() and isinstance(value, int):
+            if fmt == 's' and last_field in field_size_compat_map and isinstance(value, int):
                 fmt = f'0{field_size_compat_map[last_field]:d}d'
 
             flags = outer_mobj.group('conversion') or ''
@@ -1362,7 +1360,7 @@ class YoutubeDL:
             elif fmt[-1] == 'U':  # unicode normalized
                 value, fmt = unicodedata.normalize(
                     # "+" = compatibility equivalence, "#" = NFD
-                    'NF%s%s' % ('K' if '+' in flags else '', 'D' if '#' in flags else 'C'),
+                    'NF{}{}'.format('K' if '+' in flags else '', 'D' if '#' in flags else 'C'),
                     value), str_fmt
             elif fmt[-1] == 'D':  # decimal suffix
                 num_fmt, fmt = fmt[:-1].replace('#', ''), 's'
@@ -1390,7 +1388,7 @@ class YoutubeDL:
                 if fmt[-1] in 'csra':
                     value = sanitizer(last_field, value)
 
-            key = '%s\0%s' % (key.replace('%', '%\0'), outer_mobj.group('format'))
+            key = '{}\0{}'.format(key.replace('%', '%\0'), outer_mobj.group('format'))
             TMPL_DICT[key] = value
             return '{prefix}%({key}){fmt}'.format(key=key, fmt=fmt, prefix=outer_mobj.group('prefix'))
 
@@ -1479,9 +1477,9 @@ class YoutubeDL:
 
             date = info_dict.get('upload_date')
             if date is not None:
-                dateRange = self.params.get('daterange', DateRange())
-                if date not in dateRange:
-                    return f'{date_from_str(date).isoformat()} upload date is not in range {dateRange}'
+                date_range = self.params.get('daterange', DateRange())
+                if date not in date_range:
+                    return f'{date_from_str(date).isoformat()} upload date is not in range {date_range}'
             view_count = info_dict.get('view_count')
             if view_count is not None:
                 min_views = self.params.get('min_views')
@@ -1491,7 +1489,7 @@ class YoutubeDL:
                 if max_views is not None and view_count > max_views:
                     return 'Skipping %s, because it has exceeded the maximum view count (%d/%d)' % (video_title, view_count, max_views)
             if age_restricted(info_dict.get('age_limit'), self.params.get('age_limit')):
-                return 'Skipping "%s" because it is age restricted' % video_title
+                return f'Skipping "{video_title}" because it is age restricted'
 
             match_filter = self.params.get('match_filter')
             if match_filter is None:
@@ -1544,7 +1542,7 @@ class YoutubeDL:
 
     @staticmethod
     def add_extra_info(info_dict, extra_info):
-        '''Set the keys from extra_info in info dict if they are missing'''
+        """Set the keys from extra_info in info dict if they are missing"""
         for key, value in extra_info.items():
             info_dict.setdefault(key, value)
 
@@ -1590,7 +1588,7 @@ class YoutubeDL:
                 self.to_screen(f'[download] {self._format_screen(temp_id, self.Styles.ID)}: '
                                'has already been recorded in the archive')
                 if self.params.get('break_on_existing', False):
-                    raise ExistingVideoReached()
+                    raise ExistingVideoReached
                 break
             return self.__extract_info(url, self.get_info_extractor(key), download, extra_info, process)
         else:
@@ -1616,8 +1614,8 @@ class YoutubeDL:
                 except GeoRestrictedError as e:
                     msg = e.msg
                     if e.countries:
-                        msg += '\nThis video is available in %s.' % ', '.join(
-                            map(ISO3166Utils.short2full, e.countries))
+                        msg += '\nThis video is available in {}.'.format(', '.join(
+                            map(ISO3166Utils.short2full, e.countries)))
                     msg += '\nYou might want to use a VPN or a proxy server (with --proxy) to workaround.'
                     self.report_error(msg)
                 except ExtractorError as e:  # An error we somewhat expected
@@ -1826,8 +1824,8 @@ class YoutubeDL:
                 if isinstance(additional_urls, str):
                     additional_urls = [additional_urls]
                 self.to_screen(
-                    '[info] %s: %d additional URL(s) requested' % (ie_result['id'], len(additional_urls)))
-                self.write_debug('Additional URLs: "%s"' % '", "'.join(additional_urls))
+                    '[info] {}: {} additional URL(s) requested'.format(ie_result['id'], len(additional_urls)))
+                self.write_debug('Additional URLs: "{}"'.format('", "'.join(additional_urls)))
                 ie_result['additional_entries'] = [
                     self.extract_info(
                         url, download, extra_info=extra_info,
@@ -1879,8 +1877,8 @@ class YoutubeDL:
             webpage_url = ie_result.get('webpage_url')  # Playlists maynot have webpage_url
             if webpage_url and webpage_url in self._playlist_urls:
                 self.to_screen(
-                    '[download] Skipping already downloaded playlist: %s'
-                    % ie_result.get('title') or ie_result.get('id'))
+                    '[download] Skipping already downloaded playlist: {}'.format(
+                        ie_result.get('title')) or ie_result.get('id'))
                 return
 
             self._playlist_level += 1
@@ -1895,8 +1893,8 @@ class YoutubeDL:
                     self._playlist_urls.clear()
         elif result_type == 'compat_list':
             self.report_warning(
-                'Extractor %s returned a compat_list result. '
-                'It needs to be updated.' % ie_result.get('extractor'))
+                'Extractor {} returned a compat_list result. '
+                'It needs to be updated.'.format(ie_result.get('extractor')))
 
             def _fixup(r):
                 self.add_extra_info(r, {
@@ -1913,7 +1911,7 @@ class YoutubeDL:
             ]
             return ie_result
         else:
-            raise Exception('Invalid result type: %s' % result_type)
+            raise Exception(f'Invalid result type: {result_type}')
 
     def _ensure_dir_exists(self, path):
         return make_dir(path, self.report_error)
@@ -2029,8 +2027,9 @@ class YoutubeDL:
                 resolved_entries[i] = (playlist_index, NO_DEFAULT)
                 continue
 
-            self.to_screen('[download] Downloading item %s of %s' % (
-                self._format_screen(i + 1, self.Styles.ID), self._format_screen(n_entries, self.Styles.EMPHASIS)))
+            self.to_screen(
+                f'[download] Downloading item {self._format_screen(i + 1, self.Styles.ID)} '
+                f'of {self._format_screen(n_entries, self.Styles.EMPHASIS)}')
 
             entry_result = self.__process_iterable_entry(entry, download, collections.ChainMap({
                 'playlist_index': playlist_index,
@@ -2080,9 +2079,9 @@ class YoutubeDL:
         }
         operator_rex = re.compile(r'''(?x)\s*
             (?P<key>[\w.-]+)\s*
-            (?P<op>%s)(?P<none_inclusive>\s*\?)?\s*
+            (?P<op>{})(?P<none_inclusive>\s*\?)?\s*
             (?P<value>[0-9.]+(?:[kKmMgGtTpPeEzZyY]i?[Bb]?)?)\s*
-            ''' % '|'.join(map(re.escape, OPERATORS.keys())))
+            '''.format('|'.join(map(re.escape, OPERATORS.keys()))))
         m = operator_rex.fullmatch(filter_spec)
         if m:
             try:
@@ -2093,7 +2092,7 @@ class YoutubeDL:
                     comparison_value = parse_filesize(m.group('value') + 'B')
                 if comparison_value is None:
                     raise ValueError(
-                        'Invalid value %r in format specification %r' % (
+                        'Invalid value {!r} in format specification {!r}'.format(
                             m.group('value'), filter_spec))
             op = OPERATORS[m.group('op')]
 
@@ -2103,15 +2102,15 @@ class YoutubeDL:
                 '^=': lambda attr, value: attr.startswith(value),
                 '$=': lambda attr, value: attr.endswith(value),
                 '*=': lambda attr, value: value in attr,
-                '~=': lambda attr, value: value.search(attr) is not None
+                '~=': lambda attr, value: value.search(attr) is not None,
             }
             str_operator_rex = re.compile(r'''(?x)\s*
                 (?P<key>[a-zA-Z0-9._-]+)\s*
-                (?P<negation>!\s*)?(?P<op>%s)\s*(?P<none_inclusive>\?\s*)?
+                (?P<negation>!\s*)?(?P<op>{})\s*(?P<none_inclusive>\?\s*)?
                 (?P<quote>["'])?
                 (?P<value>(?(quote)(?:(?!(?P=quote))[^\\]|\\.)+|[\w.-]+))
                 (?(quote)(?P=quote))\s*
-                ''' % '|'.join(map(re.escape, STR_OPERATORS.keys())))
+                '''.format('|'.join(map(re.escape, STR_OPERATORS.keys()))))
             m = str_operator_rex.fullmatch(filter_spec)
             if m:
                 if m.group('op') == '~=':
@@ -2125,7 +2124,7 @@ class YoutubeDL:
                     op = str_op
 
         if not m:
-            raise SyntaxError('Invalid filter specification %r' % filter_spec)
+            raise SyntaxError(f'Invalid filter specification {filter_spec!r}')
 
         def _filter(f):
             actual_value = f.get(m.group('key'))
@@ -2141,7 +2140,7 @@ class YoutubeDL:
                 if working:
                     yield f
                 continue
-            self.to_screen('[info] Testing format %s' % f['format_id'])
+            self.to_screen('[info] Testing format {}'.format(f['format_id']))
             path = self.get_output_path('temp')
             if not self._ensure_dir_exists(f'{path}/'):
                 continue
@@ -2149,19 +2148,19 @@ class YoutubeDL:
             temp_file.close()
             try:
                 success, _ = self.dl(temp_file.name, f, test=True)
-            except (DownloadError, OSError, ValueError) + network_exceptions:
+            except (DownloadError, OSError, ValueError, *network_exceptions):
                 success = False
             finally:
                 if os.path.exists(temp_file.name):
                     try:
                         os.remove(temp_file.name)
                     except OSError:
-                        self.report_warning('Unable to delete temporary file "%s"' % temp_file.name)
+                        self.report_warning(f'Unable to delete temporary file "{temp_file.name}"')
             f['__working'] = success
             if success:
                 yield f
             else:
-                self.to_screen('[info] Unable to download format %s. Skipping...' % f['format_id'])
+                self.to_screen('[info] Unable to download format {}. Skipping...'.format(f['format_id']))
 
     def _select_formats(self, formats, selector):
         return list(selector({
@@ -2214,8 +2213,8 @@ class YoutubeDL:
 
         def _parse_filter(tokens):
             filter_parts = []
-            for type, string_, start, _, _ in tokens:
-                if type == tokenize.OP and string_ == ']':
+            for type_, string_, _start, _, _ in tokens:
+                if type_ == tokenize.OP and string_ == ']':
                     return ''.join(filter_parts)
                 else:
                     filter_parts.append(string_)
@@ -2225,23 +2224,23 @@ class YoutubeDL:
             # E.g. 'mp4' '-' 'baseline' '-' '16x9' is converted to 'mp4-baseline-16x9'
             ALLOWED_OPS = ('/', '+', ',', '(', ')')
             last_string, last_start, last_end, last_line = None, None, None, None
-            for type, string_, start, end, line in tokens:
-                if type == tokenize.OP and string_ == '[':
+            for type_, string_, start, end, line in tokens:
+                if type_ == tokenize.OP and string_ == '[':
                     if last_string:
                         yield tokenize.NAME, last_string, last_start, last_end, last_line
                         last_string = None
-                    yield type, string_, start, end, line
+                    yield type_, string_, start, end, line
                     # everything inside brackets will be handled by _parse_filter
-                    for type, string_, start, end, line in tokens:
-                        yield type, string_, start, end, line
-                        if type == tokenize.OP and string_ == ']':
+                    for type_, string_, start, end, line in tokens:
+                        yield type_, string_, start, end, line
+                        if type_ == tokenize.OP and string_ == ']':
                             break
-                elif type == tokenize.OP and string_ in ALLOWED_OPS:
+                elif type_ == tokenize.OP and string_ in ALLOWED_OPS:
                     if last_string:
                         yield tokenize.NAME, last_string, last_start, last_end, last_line
                         last_string = None
-                    yield type, string_, start, end, line
-                elif type in [tokenize.NAME, tokenize.NUMBER, tokenize.OP]:
+                    yield type_, string_, start, end, line
+                elif type_ in [tokenize.NAME, tokenize.NUMBER, tokenize.OP]:
                     if not last_string:
                         last_string = string_
                         last_start = start
@@ -2254,13 +2253,13 @@ class YoutubeDL:
         def _parse_format_selection(tokens, inside_merge=False, inside_choice=False, inside_group=False):
             selectors = []
             current_selector = None
-            for type, string_, start, _, _ in tokens:
+            for type_, string_, start, _, _ in tokens:
                 # ENCODING is only defined in Python 3.x
-                if type == getattr(tokenize, 'ENCODING', None):
+                if type_ == getattr(tokenize, 'ENCODING', None):
                     continue
-                elif type in [tokenize.NAME, tokenize.NUMBER]:
+                elif type_ in [tokenize.NAME, tokenize.NUMBER]:
                     current_selector = FormatSelector(SINGLE, string_, [])
-                elif type == tokenize.OP:
+                elif type_ == tokenize.OP:
                     if string_ == ')':
                         if not inside_group:
                             # ')' will be handled by the parentheses group
@@ -2303,7 +2302,7 @@ class YoutubeDL:
                         current_selector = FormatSelector(MERGE, (selector_1, selector_2), [])
                     else:
                         raise syntax_error(f'Operator not recognized: "{string_}"', start)
-                elif type == tokenize.ENDMARKER:
+                elif type_ == tokenize.ENDMARKER:
                     break
             if current_selector:
                 selectors.append(current_selector)
@@ -2378,7 +2377,7 @@ class YoutubeDL:
                     'acodec': the_only_audio.get('acodec'),
                     'abr': the_only_audio.get('abr'),
                     'asr': the_only_audio.get('asr'),
-                    'audio_channels': the_only_audio.get('audio_channels')
+                    'audio_channels': the_only_audio.get('audio_channels'),
                 })
 
             return new_dict
@@ -2459,9 +2458,9 @@ class YoutubeDL:
 
                         format_fallback = not format_type and not format_modified  # for b, w
                         _filter_f = (
-                            (lambda f: f.get('%scodec' % format_type) != 'none')
+                            (lambda f: f.get(f'{format_type}codec') != 'none')
                             if format_type and format_modified  # bv*, ba*, wv*, wa*
-                            else (lambda f: f.get('%scodec' % not_format_type) == 'none')
+                            else (lambda f: f.get(f'{not_format_type}codec') == 'none')
                             if format_type  # bv, ba, wv, wa
                             else (lambda f: f.get('vcodec') != 'none' and f.get('acodec') != 'none')
                             if not format_modified  # b, w
@@ -2529,7 +2528,7 @@ class YoutubeDL:
 
             def __next__(self):
                 if self.counter >= len(self.tokens):
-                    raise StopIteration()
+                    raise StopIteration
                 value = self.tokens[self.counter]
                 self.counter += 1
                 return value
@@ -2612,7 +2611,7 @@ class YoutubeDL:
         self._sort_thumbnails(thumbnails)
         for i, t in enumerate(thumbnails):
             if t.get('id') is None:
-                t['id'] = '%d' % i
+                t['id'] = str(i)
             if t.get('width') and t.get('height'):
                 t['resolution'] = '%dx%d' % (t['width'], t['height'])
             t['url'] = sanitize_url(t['url'])
@@ -2673,8 +2672,8 @@ class YoutubeDL:
         # Auto generate title fields corresponding to the *_number fields when missing
         # in order to always have clean titles. This is very common for TV series.
         for field in ('chapter', 'season', 'episode'):
-            if final and info_dict.get('%s_number' % field) is not None and not info_dict.get(field):
-                info_dict[field] = '%s %d' % (field.capitalize(), info_dict['%s_number' % field])
+            if final and info_dict.get(f'{field}_number') is not None and not info_dict.get(field):
+                info_dict[field] = '%s %d' % (field.capitalize(), info_dict[f'{field}_number'])
 
         for old_key, new_key in self._deprecated_multivalue_fields.items():
             if new_key in info_dict and old_key in info_dict:
@@ -2706,8 +2705,8 @@ class YoutubeDL:
 
         def report_force_conversion(field, field_not, conversion):
             self.report_warning(
-                '"%s" field is not %s - forcing %s conversion, there is an error in extractor'
-                % (field, field_not, conversion))
+                f'"{field}" field is not {field_not} - forcing {conversion} conversion, '
+                'there is an error in extractor')
 
         def sanitize_string_field(info, string_field):
             field = info.get(string_field)
@@ -2824,28 +2823,28 @@ class YoutubeDL:
         if not formats:
             self.raise_no_formats(info_dict)
 
-        for format in formats:
-            sanitize_string_field(format, 'format_id')
-            sanitize_numeric_fields(format)
-            format['url'] = sanitize_url(format['url'])
-            if format.get('ext') is None:
-                format['ext'] = determine_ext(format['url']).lower()
-            if format['ext'] in ('aac', 'opus', 'mp3', 'flac', 'vorbis'):
-                if format.get('acodec') is None:
-                    format['acodec'] = format['ext']
-            if format.get('protocol') is None:
-                format['protocol'] = determine_protocol(format)
-            if format.get('resolution') is None:
-                format['resolution'] = self.format_resolution(format, default=None)
-            if format.get('dynamic_range') is None and format.get('vcodec') != 'none':
-                format['dynamic_range'] = 'SDR'
-            if format.get('aspect_ratio') is None:
-                format['aspect_ratio'] = try_call(lambda: round(format['width'] / format['height'], 2))
+        for fmt in formats:
+            sanitize_string_field(fmt, 'format_id')
+            sanitize_numeric_fields(fmt)
+            fmt['url'] = sanitize_url(fmt['url'])
+            if fmt.get('ext') is None:
+                fmt['ext'] = determine_ext(fmt['url']).lower()
+            if fmt['ext'] in ('aac', 'opus', 'mp3', 'flac', 'vorbis'):
+                if fmt.get('acodec') is None:
+                    fmt['acodec'] = fmt['ext']
+            if fmt.get('protocol') is None:
+                fmt['protocol'] = determine_protocol(fmt)
+            if fmt.get('resolution') is None:
+                fmt['resolution'] = self.format_resolution(fmt, default=None)
+            if fmt.get('dynamic_range') is None and fmt.get('vcodec') != 'none':
+                fmt['dynamic_range'] = 'SDR'
+            if fmt.get('aspect_ratio') is None:
+                fmt['aspect_ratio'] = try_call(lambda: round(fmt['width'] / fmt['height'], 2))
             # For fragmented formats, "tbr" is often max bitrate and not average
-            if (('manifest-filesize-approx' in self.params['compat_opts'] or not format.get('manifest_url'))
-                    and not format.get('filesize') and not format.get('filesize_approx')):
-                format['filesize_approx'] = filesize_from_tbr(format.get('tbr'), info_dict.get('duration'))
-            format['http_headers'] = self._calc_headers(collections.ChainMap(format, info_dict), load_cookies=True)
+            if (('manifest-filesize-approx' in self.params['compat_opts'] or not fmt.get('manifest_url'))
+                    and not fmt.get('filesize') and not fmt.get('filesize_approx')):
+                fmt['filesize_approx'] = filesize_from_tbr(fmt.get('tbr'), info_dict.get('duration'))
+            fmt['http_headers'] = self._calc_headers(collections.ChainMap(fmt, info_dict), load_cookies=True)
 
         # Safeguard against old/insecure infojson when using --load-info-json
         if info_dict.get('http_headers'):
@@ -2858,36 +2857,36 @@ class YoutubeDL:
 
         self.sort_formats({
             'formats': formats,
-            '_format_sort_fields': info_dict.get('_format_sort_fields')
+            '_format_sort_fields': info_dict.get('_format_sort_fields'),
         })
 
         # Sanitize and group by format_id
         formats_dict = {}
-        for i, format in enumerate(formats):
-            if not format.get('format_id'):
-                format['format_id'] = str(i)
+        for i, fmt in enumerate(formats):
+            if not fmt.get('format_id'):
+                fmt['format_id'] = str(i)
             else:
                 # Sanitize format_id from characters used in format selector expression
-                format['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', format['format_id'])
-            formats_dict.setdefault(format['format_id'], []).append(format)
+                fmt['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', fmt['format_id'])
+            formats_dict.setdefault(fmt['format_id'], []).append(fmt)
 
         # Make sure all formats have unique format_id
         common_exts = set(itertools.chain(*self._format_selection_exts.values()))
         for format_id, ambiguous_formats in formats_dict.items():
             ambigious_id = len(ambiguous_formats) > 1
-            for i, format in enumerate(ambiguous_formats):
+            for i, fmt in enumerate(ambiguous_formats):
                 if ambigious_id:
-                    format['format_id'] = '%s-%d' % (format_id, i)
+                    fmt['format_id'] = f'{format_id}-{i}'
                 # Ensure there is no conflict between id and ext in format selection
                 # See https://github.com/yt-dlp/yt-dlp/issues/1282
-                if format['format_id'] != format['ext'] and format['format_id'] in common_exts:
-                    format['format_id'] = 'f%s' % format['format_id']
+                if fmt['format_id'] != fmt['ext'] and fmt['format_id'] in common_exts:
+                    fmt['format_id'] = 'f{}'.format(fmt['format_id'])
 
-                if format.get('format') is None:
-                    format['format'] = '{id} - {res}{note}'.format(
-                        id=format['format_id'],
-                        res=self.format_resolution(format),
-                        note=format_field(format, 'format_note', ' (%s)'),
+                if fmt.get('format') is None:
+                    fmt['format'] = '{id} - {res}{note}'.format(
+                        id=fmt['format_id'],
+                        res=self.format_resolution(fmt),
+                        note=format_field(fmt, 'format_note', ' (%s)'),
                     )
 
         if self.params.get('check_formats') is True:
@@ -3009,7 +3008,7 @@ class YoutubeDL:
             info_dict['requested_downloads'] = downloaded_formats
             info_dict = self.run_all_pps('after_video', info_dict)
             if max_downloads_reached:
-                raise MaxDownloadsReached()
+                raise MaxDownloadsReached
 
         # We update the info dict with the selected best quality format (backwards compatibility)
         info_dict.update(best_format)
@@ -3070,8 +3069,8 @@ class YoutubeDL:
             else:
                 f = formats[-1]
                 self.report_warning(
-                    'No subtitle format found matching "%s" for language %s, '
-                    'using %s. Use --list-subs for a list of available subtitles' % (formats_query, lang, f['ext']))
+                    'No subtitle format found matching "{}" for language {}, '
+                    'using {}. Use --list-subs for a list of available subtitles'.format(formats_query, lang, f['ext']))
             subs[lang] = f
         return subs
 
@@ -3226,7 +3225,7 @@ class YoutubeDL:
 
         def check_max_downloads():
             if self._num_downloads >= float(self.params.get('max_downloads') or 'inf'):
-                raise MaxDownloadsReached()
+                raise MaxDownloadsReached
 
         if self.params.get('simulate'):
             info_dict['__write_download_archive'] = self.params.get('force_write_download_archive')
@@ -3400,7 +3399,7 @@ class YoutubeDL:
                         for f in info_dict['requested_formats'] if fd != FFmpegFD else []:
                             f['filepath'] = fname = prepend_extension(
                                 correct_ext(temp_filename, info_dict['ext']),
-                                'f%s' % f['format_id'], info_dict['ext'])
+                                'f{}'.format(f['format_id']), info_dict['ext'])
                             downloaded.append(fname)
                         info_dict['url'] = '\n'.join(f['url'] for f in info_dict['requested_formats'])
                         success, real_download = self.dl(temp_filename, info_dict)
@@ -3433,7 +3432,7 @@ class YoutubeDL:
                             if temp_filename != '-':
                                 fname = prepend_extension(
                                     correct_ext(temp_filename, new_info['ext']),
-                                    'f%s' % f['format_id'], new_info['ext'])
+                                    'f{}'.format(f['format_id']), new_info['ext'])
                                 if not self._ensure_dir_exists(fname):
                                     return
                                 f['filepath'] = fname
@@ -3465,11 +3464,11 @@ class YoutubeDL:
                 info_dict['__finaldir'] = os.path.dirname(os.path.abspath(encodeFilename(full_filename)))
 
             except network_exceptions as err:
-                self.report_error('unable to download video data: %s' % error_to_compat_str(err))
+                self.report_error(f'unable to download video data: {err}')
                 return
             except OSError as err:
                 raise UnavailableVideoError(err)
-            except (ContentTooShortError, ) as err:
+            except ContentTooShortError as err:
                 self.report_error(f'content too short (expected {err.expected} bytes and served {err.downloaded})')
                 return
 
@@ -3536,13 +3535,13 @@ class YoutubeDL:
                 try:
                     replace_info_dict(self.post_process(dl_filename, info_dict, files_to_move))
                 except PostProcessingError as err:
-                    self.report_error('Postprocessing: %s' % str(err))
+                    self.report_error(f'Postprocessing: {err}')
                     return
                 try:
                     for ph in self._post_hooks:
                         ph(info_dict['filepath'])
                 except Exception as err:
-                    self.report_error('post hooks: %s' % str(err))
+                    self.report_error(f'post hooks: {err}')
                     return
                 info_dict['__write_download_archive'] = True
 
@@ -3609,7 +3608,7 @@ class YoutubeDL:
 
     @staticmethod
     def sanitize_info(info_dict, remove_private_keys=False):
-        ''' Sanitize the infodict for converting to json '''
+        """ Sanitize the infodict for converting to json """
         if info_dict is None:
             return info_dict
         info_dict.setdefault('epoch', int(time.time()))
@@ -3644,7 +3643,7 @@ class YoutubeDL:
 
     @staticmethod
     def filter_requested_info(info_dict, actually_filter=True):
-        ''' Alias of sanitize_info for backward compatibility '''
+        """ Alias of sanitize_info for backward compatibility """
         return YoutubeDL.sanitize_info(info_dict, actually_filter)
 
     def _delete_downloaded_files(self, *files_to_delete, info={}, msg=None):
@@ -3666,7 +3665,7 @@ class YoutubeDL:
                     actual_post_extract(video_dict or {})
                 return
 
-            post_extractor = info_dict.pop('__post_extractor', None) or (lambda: {})
+            post_extractor = info_dict.pop('__post_extractor', None) or dict
             info_dict.update(post_extractor())
 
         actual_post_extract(info_dict or {})
@@ -3771,7 +3770,7 @@ class YoutubeDL:
         if format.get('width') and format.get('height'):
             return '%dx%d' % (format['width'], format['height'])
         elif format.get('height'):
-            return '%sp' % format['height']
+            return '{}p'.format(format['height'])
         elif format.get('width'):
             return '%dx?' % format['width']
         return default
@@ -3788,7 +3787,7 @@ class YoutubeDL:
         if fdict.get('language'):
             if res:
                 res += ' '
-            res += '[%s]' % fdict['language']
+            res += '[{}]'.format(fdict['language'])
         if fdict.get('format_note') is not None:
             if res:
                 res += ' '
@@ -3800,7 +3799,7 @@ class YoutubeDL:
         if fdict.get('container') is not None:
             if res:
                 res += ', '
-            res += '%s container' % fdict['container']
+            res += '{} container'.format(fdict['container'])
         if (fdict.get('vcodec') is not None
                 and fdict.get('vcodec') != 'none'):
             if res:
@@ -3815,7 +3814,7 @@ class YoutubeDL:
         if fdict.get('fps') is not None:
             if res:
                 res += ', '
-            res += '%sfps' % fdict['fps']
+            res += '{}fps'.format(fdict['fps'])
         if fdict.get('acodec') is not None:
             if res:
                 res += ', '
@@ -3858,7 +3857,7 @@ class YoutubeDL:
                     format_field(f, 'format_id'),
                     format_field(f, 'ext'),
                     self.format_resolution(f),
-                    self._format_note(f)
+                    self._format_note(f),
                 ] for f in formats if (f.get('preference') or 0) >= -1000]
             return render_table(['format code', 'extension', 'resolution', 'note'], table, extra_gap=1)
 
@@ -3964,11 +3963,11 @@ class YoutubeDL:
         from .extractor.extractors import _LAZY_LOADER
         from .extractor.extractors import (
             _PLUGIN_CLASSES as plugin_ies,
-            _PLUGIN_OVERRIDES as plugin_ie_overrides
+            _PLUGIN_OVERRIDES as plugin_ie_overrides,
         )
 
         def get_encoding(stream):
-            ret = str(getattr(stream, 'encoding', 'missing (%s)' % type(stream).__name__))
+            ret = str(getattr(stream, 'encoding', f'missing ({type(stream).__name__})'))
             additional_info = []
             if os.environ.get('TERM', '').lower() == 'dumb':
                 additional_info.append('dumb')
@@ -3979,13 +3978,13 @@ class YoutubeDL:
                 ret = f'{ret} ({",".join(additional_info)})'
             return ret
 
-        encoding_str = 'Encodings: locale %s, fs %s, pref %s, %s' % (
+        encoding_str = 'Encodings: locale {}, fs {}, pref {}, {}'.format(
             locale.getpreferredencoding(),
             sys.getfilesystemencoding(),
             self.get_encoding(),
             ', '.join(
                 f'{key} {get_encoding(stream)}' for key, stream in self._out_files.items_
-                if stream is not None and key != 'console')
+                if stream is not None and key != 'console'),
         )
 
         logger = self.params.get('logger')
@@ -4017,7 +4016,7 @@ class YoutubeDL:
             else:
                 write_debug('Lazy loading extractors is disabled')
         if self.params['compat_opts']:
-            write_debug('Compatibility options: %s' % ', '.join(self.params['compat_opts']))
+            write_debug('Compatibility options: {}'.format(', '.join(self.params['compat_opts'])))
 
         if current_git_head():
             write_debug(f'Git HEAD: {current_git_head()}')
@@ -4026,14 +4025,14 @@ class YoutubeDL:
         exe_versions, ffmpeg_features = FFmpegPostProcessor.get_versions_and_features(self)
         ffmpeg_features = {key for key, val in ffmpeg_features.items() if val}
         if ffmpeg_features:
-            exe_versions['ffmpeg'] += ' (%s)' % ','.join(sorted(ffmpeg_features))
+            exe_versions['ffmpeg'] += ' ({})'.format(','.join(sorted(ffmpeg_features)))
 
         exe_versions['rtmpdump'] = rtmpdump_version()
         exe_versions['phantomjs'] = PhantomJSwrapper._version()
         exe_str = ', '.join(
             f'{exe} {v}' for exe, v in sorted(exe_versions.items()) if v
         ) or 'none'
-        write_debug('exe versions: %s' % exe_str)
+        write_debug(f'exe versions: {exe_str}')
 
         from .compat.compat_utils import get_package_info
         from .dependencies import available_dependencies
@@ -4045,7 +4044,7 @@ class YoutubeDL:
         write_debug(f'Proxy map: {self.proxies}')
         write_debug(f'Request Handlers: {", ".join(rh.RH_NAME for rh in self._request_director.handlers.values())}')
         for plugin_type, plugins in {'Extractor': plugin_ies, 'Post-Processor': plugin_pps}.items():
-            display_list = ['%s%s' % (
+            display_list = ['{}{}'.format(
                 klass.__name__, '' if klass.__name__ == name else f' as {name}')
                 for name, klass in plugins.items()]
             if plugin_type == 'Extractor':
@@ -4062,14 +4061,13 @@ class YoutubeDL:
         # Not implemented
         if False and self.params.get('call_home'):
             ipaddr = self.urlopen('https://yt-dl.org/ip').read().decode()
-            write_debug('Public IP address: %s' % ipaddr)
+            write_debug(f'Public IP address: {ipaddr}')
             latest_version = self.urlopen(
                 'https://yt-dl.org/latest/version').read().decode()
             if version_tuple(latest_version) > version_tuple(__version__):
                 self.report_warning(
-                    'You are using an outdated version (newest version: %s)! '
-                    'See https://yt-dl.org/update if you need help updating.' %
-                    latest_version)
+                    f'You are using an outdated version (newest version: {latest_version})! '
+                    'See https://yt-dl.org/update if you need help updating.')
 
     @functools.cached_property
     def proxies(self):
@@ -4103,7 +4101,7 @@ class YoutubeDL:
         return handler._get_instance(cookiejar=self.cookiejar, proxies=self.proxies)
 
     def _get_available_impersonate_targets(self):
-        # todo(future): make available as public API
+        # TODO(future): make available as public API
         return [
             (target, rh.RH_NAME)
             for rh in self._request_director.handlers.values()
@@ -4112,7 +4110,7 @@ class YoutubeDL:
         ]
 
     def _impersonate_target_available(self, target):
-        # todo(future): make available as public API
+        # TODO(future): make available as public API
         return any(
             rh.is_supported_target(target)
             for rh in self._request_director.handlers.values()
@@ -4238,7 +4236,7 @@ class YoutubeDL:
         return encoding
 
     def _write_info_json(self, label, ie_result, infofn, overwrite=None):
-        ''' Write infojson and returns True = written, 'exists' = Already exists, False = skip, None = error '''
+        """ Write infojson and returns True = written, 'exists' = Already exists, False = skip, None = error """
         if overwrite is None:
             overwrite = self.params.get('overwrites', True)
         if not self.params.get('writeinfojson'):
@@ -4261,7 +4259,7 @@ class YoutubeDL:
             return None
 
     def _write_description(self, label, ie_result, descfn):
-        ''' Write description and returns True = written, False = skip, None = error '''
+        """ Write description and returns True = written, False = skip, None = error """
         if not self.params.get('writedescription'):
             return False
         elif not descfn:
@@ -4285,7 +4283,7 @@ class YoutubeDL:
         return True
 
     def _write_subtitles(self, info_dict, filename):
-        ''' Write subtitles to file and return list of (sub_filename, final_sub_filename); or None if error'''
+        """ Write subtitles to file and return list of (sub_filename, final_sub_filename); or None if error"""
         ret = []
         subtitles = info_dict.get('requested_subtitles')
         if not (self.params.get('writesubtitles') or self.params.get('writeautomaticsub')):
@@ -4331,7 +4329,7 @@ class YoutubeDL:
                 self.dl(sub_filename, sub_copy, subtitle=True)
                 sub_info['filepath'] = sub_filename
                 ret.append((sub_filename, sub_filename_final))
-            except (DownloadError, ExtractorError, IOError, OSError, ValueError) + network_exceptions as err:
+            except (DownloadError, ExtractorError, OSError, ValueError, *network_exceptions) as err:
                 msg = f'Unable to download video subtitles for {sub_lang!r}: {err}'
                 if self.params.get('ignoreerrors') is not True:  # False or 'only_download'
                     if not self.params.get('ignoreerrors'):
@@ -4341,7 +4339,7 @@ class YoutubeDL:
         return ret
 
     def _write_thumbnails(self, label, info_dict, filename, thumb_filename_base=None):
-        ''' Write thumbnails to file and return list of (thumb_filename, final_thumb_filename); or None if error '''
+        """ Write thumbnails to file and return list of (thumb_filename, final_thumb_filename); or None if error """
         write_all = self.params.get('write_all_thumbnails', False)
         thumbnails, ret = [], []
         if write_all or self.params.get('writethumbnail', False):
@@ -4368,8 +4366,8 @@ class YoutubeDL:
 
             existing_thumb = self.existing_file((thumb_filename_final, thumb_filename))
             if existing_thumb:
-                self.to_screen('[info] %s is already present' % (
-                    thumb_display_id if multiple else f'{label} thumbnail').capitalize())
+                self.to_screen('[info] {} is already present'.format((
+                    thumb_display_id if multiple else f'{label} thumbnail').capitalize()))
                 t['filepath'] = existing_thumb
                 ret.append((existing_thumb, thumb_filename_final))
             else:

yt_dlp/__init__.py

@@ -14,7 +14,7 @@ import os
 import re
 import traceback
 
-from .compat import compat_os_name, compat_shlex_quote
+from .compat import compat_os_name
 from .cookies import SUPPORTED_BROWSERS, SUPPORTED_KEYRINGS
 from .downloader.external import get_external_downloader
 from .extractor import list_extractor_classes
@@ -58,6 +58,7 @@ from .utils import (
     read_stdin,
     render_table,
     setproctitle,
+    shell_quote,
     traverse_obj,
     variadic,
     write_string,
@@ -115,9 +116,9 @@ def print_extractor_information(opts, urls):
             ie.description(markdown=False, search_examples=_SEARCHES)
             for ie in list_extractor_classes(opts.age_limit) if ie.working() and ie.IE_DESC is not False)
     elif opts.ap_list_mso:
-        out = 'Supported TV Providers:\n%s\n' % render_table(
+        out = 'Supported TV Providers:\n{}\n'.format(render_table(
             ['mso', 'mso name'],
-            [[mso_id, mso_info['name']] for mso_id, mso_info in MSO_INFO.items()])
+            [[mso_id, mso_info['name']] for mso_id, mso_info in MSO_INFO.items()]))
     else:
         return False
     write_string(out, out=sys.stdout)
@@ -129,7 +130,7 @@ def set_compat_opts(opts):
         if name not in opts.compat_opts:
             return False
         opts.compat_opts.discard(name)
-        opts.compat_opts.update(['*%s' % name])
+        opts.compat_opts.update([f'*{name}'])
         return True
 
     def set_default_compat(compat_name, opt_name, default=True, remove_compat=True):
@@ -222,7 +223,7 @@ def validate_options(opts):
         validate_minmax(opts.sleep_interval, opts.max_sleep_interval, 'sleep interval')
 
     if opts.wait_for_video is not None:
-        min_wait, max_wait, *_ = map(parse_duration, opts.wait_for_video.split('-', 1) + [None])
+        min_wait, max_wait, *_ = map(parse_duration, [*opts.wait_for_video.split('-', 1), None])
         validate(min_wait is not None and not (max_wait is None and '-' in opts.wait_for_video),
                  'time range to wait for video', opts.wait_for_video)
         validate_minmax(min_wait, max_wait, 'time range to wait for video')
@@ -264,9 +265,9 @@ def validate_options(opts):
     # Retry sleep function
     def parse_sleep_func(expr):
         NUMBER_RE = r'\d+(?:\.\d+)?'
-        op, start, limit, step, *_ = tuple(re.fullmatch(
+        op, start, limit, step, *_ = (*tuple(re.fullmatch(
             rf'(?:(linear|exp)=)?({NUMBER_RE})(?::({NUMBER_RE})?)?(?::({NUMBER_RE}))?',
-            expr.strip()).groups()) + (None, None)
+            expr.strip()).groups()), None, None)
 
         if op == 'exp':
             return lambda n: min(float(start) * (float(step or 2) ** n), float(limit or 'inf'))
@@ -396,13 +397,13 @@ def validate_options(opts):
     # MetadataParser
     def metadataparser_actions(f):
         if isinstance(f, str):
-            cmd = '--parse-metadata %s' % compat_shlex_quote(f)
+            cmd = f'--parse-metadata {shell_quote(f)}'
             try:
                 actions = [MetadataFromFieldPP.to_action(f)]
             except Exception as err:
                 raise ValueError(f'{cmd} is invalid; {err}')
         else:
-            cmd = '--replace-in-metadata %s' % ' '.join(map(compat_shlex_quote, f))
+            cmd = f'--replace-in-metadata {shell_quote(f)}'
             actions = ((MetadataParserPP.Actions.REPLACE, x, *f[1:]) for x in f[0].split(','))
 
         for action in actions:
@@ -413,7 +414,7 @@ def validate_options(opts):
             yield action
 
     if opts.metafromtitle is not None:
-        opts.parse_metadata.setdefault('pre_process', []).append('title:%s' % opts.metafromtitle)
+        opts.parse_metadata.setdefault('pre_process', []).append(f'title:{opts.metafromtitle}')
     opts.parse_metadata = {
         k: list(itertools.chain(*map(metadataparser_actions, v)))
         for k, v in opts.parse_metadata.items()
@@ -602,7 +603,7 @@ def get_postprocessors(opts):
         yield {
             'key': 'MetadataParser',
             'actions': actions,
-            'when': when
+            'when': when,
         }
     sponsorblock_query = opts.sponsorblock_mark | opts.sponsorblock_remove
     if sponsorblock_query:
@@ -610,19 +611,19 @@ def get_postprocessors(opts):
             'key': 'SponsorBlock',
             'categories': sponsorblock_query,
             'api': opts.sponsorblock_api,
-            'when': 'after_filter'
+            'when': 'after_filter',
         }
     if opts.convertsubtitles:
         yield {
             'key': 'FFmpegSubtitlesConvertor',
             'format': opts.convertsubtitles,
-            'when': 'before_dl'
+            'when': 'before_dl',
         }
     if opts.convertthumbnails:
         yield {
             'key': 'FFmpegThumbnailsConvertor',
             'format': opts.convertthumbnails,
-            'when': 'before_dl'
+            'when': 'before_dl',
         }
     if opts.extractaudio:
         yield {
@@ -647,7 +648,7 @@ def get_postprocessors(opts):
         yield {
             'key': 'FFmpegEmbedSubtitle',
             # already_have_subtitle = True prevents the file from being deleted after embedding
-            'already_have_subtitle': opts.writesubtitles and keep_subs
+            'already_have_subtitle': opts.writesubtitles and keep_subs,
         }
         if not opts.writeautomaticsub and keep_subs:
             opts.writesubtitles = True
@@ -660,7 +661,7 @@ def get_postprocessors(opts):
             'remove_sponsor_segments': opts.sponsorblock_remove,
             'remove_ranges': opts.remove_ranges,
             'sponsorblock_chapter_title': opts.sponsorblock_chapter_title,
-            'force_keyframes': opts.force_keyframes_at_cuts
+            'force_keyframes': opts.force_keyframes_at_cuts,
         }
     # FFmpegMetadataPP should be run after FFmpegVideoConvertorPP and
     # FFmpegExtractAudioPP as containers before conversion may not support
@@ -694,7 +695,7 @@ def get_postprocessors(opts):
         yield {
             'key': 'EmbedThumbnail',
             # already_have_thumbnail = True prevents the file from being deleted after embedding
-            'already_have_thumbnail': opts.writethumbnail
+            'already_have_thumbnail': opts.writethumbnail,
         }
         if not opts.writethumbnail:
             opts.writethumbnail = True
@@ -741,7 +742,7 @@ def parse_options(argv=None):
     print_only = bool(opts.forceprint) and all(k not in opts.forceprint for k in POSTPROCESS_WHEN[3:])
     any_getting = any(getattr(opts, k) for k in (
         'dumpjson', 'dump_single_json', 'getdescription', 'getduration', 'getfilename',
-        'getformat', 'getid', 'getthumbnail', 'gettitle', 'geturl'
+        'getformat', 'getid', 'getthumbnail', 'gettitle', 'geturl',
     ))
     if opts.quiet is None:
         opts.quiet = any_getting or opts.print_json or bool(opts.forceprint)
@@ -1002,7 +1003,7 @@ def _real_main(argv=None):
             def make_row(target, handler):
                 return [
                     join_nonempty(target.client.title(), target.version, delim='-') or '-',
-                    join_nonempty((target.os or "").title(), target.os_version, delim='-') or '-',
+                    join_nonempty((target.os or '').title(), target.os_version, delim='-') or '-',
                     handler,
                 ]
 

yt_dlp/aes.py

@@ -68,7 +68,7 @@ def pad_block(block, padding_mode):
         raise NotImplementedError(f'Padding mode {padding_mode} is not implemented')
 
     if padding_mode == 'iso7816' and padding_size:
-        block = block + [0x80]  # NB: += mutates list
+        block = [*block, 0x80]  # NB: += mutates list
         padding_size -= 1
 
     return block + [PADDING_BYTE[padding_mode]] * padding_size
@@ -110,9 +110,7 @@ def aes_ecb_decrypt(data, key, iv=None):
     for i in range(block_count):
         block = data[i * BLOCK_SIZE_BYTES: (i + 1) * BLOCK_SIZE_BYTES]
         encrypted_data += aes_decrypt(block, expanded_key)
-    encrypted_data = encrypted_data[:len(data)]
-
-    return encrypted_data
+    return encrypted_data[:len(data)]
 
 
 def aes_ctr_decrypt(data, key, iv):
@@ -148,9 +146,7 @@ def aes_ctr_encrypt(data, key, iv):
 
         cipher_counter_block = aes_encrypt(counter_block, expanded_key)
         encrypted_data += xor(block, cipher_counter_block)
-    encrypted_data = encrypted_data[:len(data)]
-
-    return encrypted_data
+    return encrypted_data[:len(data)]
 
 
 def aes_cbc_decrypt(data, key, iv):
@@ -174,9 +170,7 @@ def aes_cbc_decrypt(data, key, iv):
         decrypted_block = aes_decrypt(block, expanded_key)
         decrypted_data += xor(decrypted_block, previous_cipher_block)
         previous_cipher_block = block
-    decrypted_data = decrypted_data[:len(data)]
-
-    return decrypted_data
+    return decrypted_data[:len(data)]
 
 
 def aes_cbc_encrypt(data, key, iv, *, padding_mode='pkcs7'):
@@ -224,7 +218,7 @@ def aes_gcm_decrypt_and_verify(data, key, tag, nonce):
     hash_subkey = aes_encrypt([0] * BLOCK_SIZE_BYTES, key_expansion(key))
 
     if len(nonce) == 12:
-        j0 = nonce + [0, 0, 0, 1]
+        j0 = [*nonce, 0, 0, 0, 1]
     else:
         fill = (BLOCK_SIZE_BYTES - (len(nonce) % BLOCK_SIZE_BYTES)) % BLOCK_SIZE_BYTES + 8
         ghash_in = nonce + [0] * fill + bytes_to_intlist((8 * len(nonce)).to_bytes(8, 'big'))
@@ -242,11 +236,11 @@ def aes_gcm_decrypt_and_verify(data, key, tag, nonce):
         data
         + [0] * (BLOCK_SIZE_BYTES - len(data) + pad_len)        # pad
         + bytes_to_intlist((0 * 8).to_bytes(8, 'big')           # length of associated data
-                           + ((len(data) * 8).to_bytes(8, 'big')))  # length of data
+                           + ((len(data) * 8).to_bytes(8, 'big'))),  # length of data
     )
 
     if tag != aes_ctr_encrypt(s_tag, key, j0):
-        raise ValueError("Mismatching authentication tag")
+        raise ValueError('Mismatching authentication tag')
 
     return decrypted_data
 
@@ -288,9 +282,7 @@ def aes_decrypt(data, expanded_key):
             data = list(iter_mix_columns(data, MIX_COLUMN_MATRIX_INV))
         data = shift_rows_inv(data)
         data = sub_bytes_inv(data)
-    data = xor(data, expanded_key[:BLOCK_SIZE_BYTES])
-
-    return data
+    return xor(data, expanded_key[:BLOCK_SIZE_BYTES])
 
 
 def aes_decrypt_text(data, password, key_size_bytes):
@@ -318,9 +310,7 @@ def aes_decrypt_text(data, password, key_size_bytes):
     cipher = data[NONCE_LENGTH_BYTES:]
 
     decrypted_data = aes_ctr_decrypt(cipher, key, nonce + [0] * (BLOCK_SIZE_BYTES - NONCE_LENGTH_BYTES))
-    plaintext = intlist_to_bytes(decrypted_data)
-
-    return plaintext
+    return intlist_to_bytes(decrypted_data)
 
 
 RCON = (0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36)
@@ -428,9 +418,7 @@ def key_expansion(data):
         for _ in range(3 if key_size_bytes == 32 else 2 if key_size_bytes == 24 else 0):
             temp = data[-4:]
             data += xor(temp, data[-key_size_bytes: 4 - key_size_bytes])
-    data = data[:expanded_key_size_bytes]
-
-    return data
+    return data[:expanded_key_size_bytes]
 
 
 def iter_vector(iv):
@@ -511,7 +499,7 @@ def block_product(block_x, block_y):
     # NIST SP 800-38D, Algorithm 1
 
     if len(block_x) != BLOCK_SIZE_BYTES or len(block_y) != BLOCK_SIZE_BYTES:
-        raise ValueError("Length of blocks need to be %d bytes" % BLOCK_SIZE_BYTES)
+        raise ValueError(f'Length of blocks need to be {BLOCK_SIZE_BYTES} bytes')
 
     block_r = [0xE1] + [0] * (BLOCK_SIZE_BYTES - 1)
     block_v = block_y[:]
@@ -534,7 +522,7 @@ def ghash(subkey, data):
     # NIST SP 800-38D, Algorithm 2
 
     if len(data) % BLOCK_SIZE_BYTES:
-        raise ValueError("Length of data should be %d bytes" % BLOCK_SIZE_BYTES)
+        raise ValueError(f'Length of data should be {BLOCK_SIZE_BYTES} bytes')
 
     last_y = [0] * BLOCK_SIZE_BYTES
     for i in range(0, len(data), BLOCK_SIZE_BYTES):

yt_dlp/cache.py

@@ -81,10 +81,10 @@ class Cache:
 
         cachedir = self._get_root_dir()
         if not any((term in cachedir) for term in ('cache', 'tmp')):
-            raise Exception('Not removing directory %s - this does not look like a cache dir' % cachedir)
+            raise Exception(f'Not removing directory {cachedir} - this does not look like a cache dir')
 
         self._ydl.to_screen(
-            'Removing cache dir %s .' % cachedir, skip_eol=True)
+            f'Removing cache dir {cachedir} .', skip_eol=True)
         if os.path.exists(cachedir):
             self._ydl.to_screen('.', skip_eol=True)
             shutil.rmtree(cachedir)

yt_dlp/compat/_legacy.py

@@ -35,7 +35,7 @@ from .compat_utils import passthrough_module
 from ..dependencies import brotli as compat_brotli  # noqa: F401
 from ..dependencies import websockets as compat_websockets  # noqa: F401
 from ..dependencies.Cryptodome import AES as compat_pycrypto_AES  # noqa: F401
-from ..networking.exceptions import HTTPError as compat_HTTPError  # noqa: F401
+from ..networking.exceptions import HTTPError as compat_HTTPError
 
 passthrough_module(__name__, '...utils', ('WINDOWS_VT_MODE', 'windows_enable_vt_mode'))
 

yt_dlp/compat/functools.py

@@ -7,6 +7,6 @@ passthrough_module(__name__, 'functools')
 del passthrough_module
 
 try:
-    cache  # >= 3.9
+    _ = cache  # >= 3.9
 except NameError:
     cache = lru_cache(maxsize=None)

yt_dlp/cookies.py

@@ -146,7 +146,7 @@ def _extract_firefox_cookies(profile, container, logger):
             identities = json.load(containers).get('identities', [])
         container_id = next((context.get('userContextId') for context in identities if container in (
             context.get('name'),
-            try_call(lambda: re.fullmatch(r'userContext([^\.]+)\.label', context['l10nID']).group())
+            try_call(lambda: re.fullmatch(r'userContext([^\.]+)\.label', context['l10nID']).group()),
         )), None)
         if not isinstance(container_id, int):
             raise ValueError(f'could not find firefox container "{container}" in containers.json')
@@ -263,7 +263,7 @@ def _get_chromium_based_browser_settings(browser_name):
     return {
         'browser_dir': browser_dir,
         'keyring_name': keyring_name,
-        'supports_profiles': browser_name not in browsers_without_profiles
+        'supports_profiles': browser_name not in browsers_without_profiles,
     }
 
 
@@ -826,7 +826,7 @@ def _choose_linux_keyring(logger):
     elif desktop_environment == _LinuxDesktopEnvironment.KDE6:
         linux_keyring = _LinuxKeyring.KWALLET6
     elif desktop_environment in (
-        _LinuxDesktopEnvironment.KDE3, _LinuxDesktopEnvironment.LXQT, _LinuxDesktopEnvironment.OTHER
+        _LinuxDesktopEnvironment.KDE3, _LinuxDesktopEnvironment.LXQT, _LinuxDesktopEnvironment.OTHER,
     ):
         linux_keyring = _LinuxKeyring.BASICTEXT
     else:
@@ -861,7 +861,7 @@ def _get_kwallet_network_wallet(keyring, logger):
             'dbus-send', '--session', '--print-reply=literal',
             f'--dest={service_name}',
             wallet_path,
-            'org.kde.KWallet.networkWallet'
+            'org.kde.KWallet.networkWallet',
         ], text=True, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
 
         if returncode:
@@ -891,7 +891,7 @@ def _get_kwallet_password(browser_keyring_name, keyring, logger):
             'kwallet-query',
             '--read-password', f'{browser_keyring_name} Safe Storage',
             '--folder', f'{browser_keyring_name} Keys',
-            network_wallet
+            network_wallet,
         ], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
 
         if returncode:
@@ -931,7 +931,6 @@ def _get_gnome_keyring_password(browser_keyring_name, logger):
         for item in col.get_all_items():
             if item.get_label() == f'{browser_keyring_name} Safe Storage':
                 return item.get_secret()
-        else:
         logger.error('failed to read from keyring')
         return b''
 
@@ -1053,7 +1052,7 @@ def _decrypt_windows_dpapi(ciphertext, logger):
         None,  # pvReserved: must be NULL
         None,  # pPromptStruct: information about prompts to display
         0,  # dwFlags
-        ctypes.byref(blob_out)  # pDataOut
+        ctypes.byref(blob_out),  # pDataOut
     )
     if not ret:
         logger.warning('failed to decrypt with DPAPI', only_once=True)
@@ -1129,24 +1128,24 @@ class LenientSimpleCookie(http.cookies.SimpleCookie):
     _LEGAL_VALUE_CHARS = _LEGAL_KEY_CHARS + re.escape('(),/<=>?@[]{}')
 
     _RESERVED = {
-        "expires",
-        "path",
-        "comment",
-        "domain",
-        "max-age",
-        "secure",
-        "httponly",
-        "version",
-        "samesite",
+        'expires',
+        'path',
+        'comment',
+        'domain',
+        'max-age',
+        'secure',
+        'httponly',
+        'version',
+        'samesite',
     }
 
-    _FLAGS = {"secure", "httponly"}
+    _FLAGS = {'secure', 'httponly'}
 
     # Added 'bad' group to catch the remaining value
-    _COOKIE_PATTERN = re.compile(r"""
+    _COOKIE_PATTERN = re.compile(r'''
         \s*                            # Optional whitespace at start of cookie
         (?P<key>                       # Start of group 'key'
-        [""" + _LEGAL_KEY_CHARS + r"""]+?# Any word of at least one letter
+        [''' + _LEGAL_KEY_CHARS + r''']+?# Any word of at least one letter
         )                              # End of group 'key'
         (                              # Optional group: there may not be a value.
         \s*=\s*                          # Equal Sign
@@ -1156,7 +1155,7 @@ class LenientSimpleCookie(http.cookies.SimpleCookie):
         |                                    # or
         \w{3},\s[\w\d\s-]{9,11}\s[\d:]{8}\sGMT # Special case for "expires" attr
         |                                    # or
-        [""" + _LEGAL_VALUE_CHARS + r"""]*     # Any word or empty string
+        [''' + _LEGAL_VALUE_CHARS + r''']*     # Any word or empty string
         )                                  # End of group 'val'
         |                                  # or
         (?P<bad>(?:\\;|[^;])*?)            # 'bad' group fallback for invalid values
@@ -1164,7 +1163,7 @@ class LenientSimpleCookie(http.cookies.SimpleCookie):
         )?                             # End of optional value group
         \s*                            # Any number of spaces.
         (\s+|;|$)                      # Ending either at space, semicolon, or EOS.
-        """, re.ASCII | re.VERBOSE)
+        ''', re.ASCII | re.VERBOSE)
 
     def load(self, data):
         # Workaround for https://github.com/yt-dlp/yt-dlp/issues/4776
@@ -1260,14 +1259,14 @@ class YoutubeDLCookieJar(http.cookiejar.MozillaCookieJar):
                 # with no name, whereas http.cookiejar regards it as a
                 # cookie with no value.
                 name, value = '', name
-            f.write('%s\n' % '\t'.join((
+            f.write('{}\n'.format('\t'.join((
                 cookie.domain,
                 self._true_or_false(cookie.domain.startswith('.')),
                 cookie.path,
                 self._true_or_false(cookie.secure),
                 str_or_none(cookie.expires, default=''),
-                name, value
-            )))
+                name, value,
+            ))))
 
     def save(self, filename=None, ignore_discard=True, ignore_expires=True):
         """
@@ -1306,10 +1305,10 @@ class YoutubeDLCookieJar(http.cookiejar.MozillaCookieJar):
                 return line
             cookie_list = line.split('\t')
             if len(cookie_list) != self._ENTRY_LEN:
-                raise http.cookiejar.LoadError('invalid length %d' % len(cookie_list))
+                raise http.cookiejar.LoadError(f'invalid length {len(cookie_list)}')
             cookie = self._CookieFileEntry(*cookie_list)
             if cookie.expires_at and not cookie.expires_at.isdigit():
-                raise http.cookiejar.LoadError('invalid expires at %s' % cookie.expires_at)
+                raise http.cookiejar.LoadError(f'invalid expires at {cookie.expires_at}')
             return line
 
         cf = io.StringIO()

yt_dlp/downloader/common.py

@@ -404,7 +404,7 @@ class FileDownloader:
 
     def report_resuming_byte(self, resume_len):
         """Report attempt to resume at given byte."""
-        self.to_screen('[download] Resuming download at byte %s' % resume_len)
+        self.to_screen(f'[download] Resuming download at byte {resume_len}')
 
     def report_retry(self, err, count, retries, frag_index=NO_DEFAULT, fatal=True):
         """Report retry"""

yt_dlp/downloader/external.py

@@ -55,7 +55,7 @@ class ExternalFD(FragmentFD):
             # correct and expected termination thus all postprocessing
             # should take place
             retval = 0
-            self.to_screen('[%s] Interrupted by user' % self.get_basename())
+            self.to_screen(f'[{self.get_basename()}] Interrupted by user')
         finally:
             if self._cookies_tempfile:
                 self.try_remove(self._cookies_tempfile)
@@ -172,7 +172,7 @@ class ExternalFD(FragmentFD):
         decrypt_fragment = self.decrypter(info_dict)
         dest, _ = self.sanitize_open(tmpfilename, 'wb')
         for frag_index, fragment in enumerate(info_dict['fragments']):
-            fragment_filename = '%s-Frag%d' % (tmpfilename, frag_index)
+            fragment_filename = f'{tmpfilename}-Frag{frag_index}'
             try:
                 src, _ = self.sanitize_open(fragment_filename, 'rb')
             except OSError as err:
@@ -186,7 +186,7 @@ class ExternalFD(FragmentFD):
             if not self.params.get('keep_fragments', False):
                 self.try_remove(encodeFilename(fragment_filename))
         dest.close()
-        self.try_remove(encodeFilename('%s.frag.urls' % tmpfilename))
+        self.try_remove(encodeFilename(f'{tmpfilename}.frag.urls'))
         return 0
 
     def _call_process(self, cmd, info_dict):
@@ -336,11 +336,11 @@ class Aria2cFD(ExternalFD):
 
         if 'fragments' in info_dict:
             cmd += ['--uri-selector=inorder']
-            url_list_file = '%s.frag.urls' % tmpfilename
+            url_list_file = f'{tmpfilename}.frag.urls'
             url_list = []
             for frag_index, fragment in enumerate(info_dict['fragments']):
-                fragment_filename = '%s-Frag%d' % (os.path.basename(tmpfilename), frag_index)
-                url_list.append('%s\n\tout=%s' % (fragment['url'], self._aria2c_filename(fragment_filename)))
+                fragment_filename = f'{os.path.basename(tmpfilename)}-Frag{frag_index}'
+                url_list.append('{}\n\tout={}'.format(fragment['url'], self._aria2c_filename(fragment_filename)))
             stream, _ = self.sanitize_open(url_list_file, 'wb')
             stream.write('\n'.join(url_list).encode())
             stream.close()
@@ -357,7 +357,7 @@ class Aria2cFD(ExternalFD):
             'id': sanitycheck,
             'method': method,
             'params': [f'token:{rpc_secret}', *params],
-        }).encode('utf-8')
+        }).encode()
         request = Request(
             f'http://localhost:{rpc_port}/jsonrpc',
             data=d, headers={
@@ -416,7 +416,7 @@ class Aria2cFD(ExternalFD):
                     'total_bytes_estimate': total,
                     'eta': (total - downloaded) / (speed or 1),
                     'fragment_index': min(frag_count, len(completed) + 1) if fragmented else None,
-                    'elapsed': time.time() - started
+                    'elapsed': time.time() - started,
                 })
                 self._hook_progress(status, info_dict)
 
@@ -509,12 +509,12 @@ class FFmpegFD(ExternalFD):
         proxy = self.params.get('proxy')
         if proxy:
             if not re.match(r'^[\da-zA-Z]+://', proxy):
-                proxy = 'http://%s' % proxy
+                proxy = f'http://{proxy}'
 
             if proxy.startswith('socks'):
                 self.report_warning(
-                    '%s does not support SOCKS proxies. Downloading is likely to fail. '
-                    'Consider adding --hls-prefer-native to your command.' % self.get_basename())
+                    f'{self.get_basename()} does not support SOCKS proxies. Downloading is likely to fail. '
+                    'Consider adding --hls-prefer-native to your command.')
 
             # Since December 2015 ffmpeg supports -http_proxy option (see
             # http://git.videolan.org/?p=ffmpeg.git;a=commit;h=b4eb1f29ebddd60c41a2eb39f5af701e38e0d3fd)
@@ -575,7 +575,7 @@ class FFmpegFD(ExternalFD):
             if end_time:
                 args += ['-t', str(end_time - start_time)]
 
-            args += self._configuration_args((f'_i{i + 1}', '_i')) + ['-i', fmt['url']]
+            args += [*self._configuration_args((f'_i{i + 1}', '_i')), '-i', fmt['url']]
 
         if not (start_time or end_time) or not self.params.get('force_keyframes_at_cuts'):
             args += ['-c', 'copy']

yt_dlp/downloader/f4m.py

@@ -67,12 +67,12 @@ class FlvReader(io.BytesIO):
         self.read_bytes(3)
         quality_entry_count = self.read_unsigned_char()
         # QualityEntryCount
-        for i in range(quality_entry_count):
+        for _ in range(quality_entry_count):
             self.read_string()
 
         segment_run_count = self.read_unsigned_int()
         segments = []
-        for i in range(segment_run_count):
+        for _ in range(segment_run_count):
             first_segment = self.read_unsigned_int()
             fragments_per_segment = self.read_unsigned_int()
             segments.append((first_segment, fragments_per_segment))
@@ -91,12 +91,12 @@ class FlvReader(io.BytesIO):
 
         quality_entry_count = self.read_unsigned_char()
         # QualitySegmentUrlModifiers
-        for i in range(quality_entry_count):
+        for _ in range(quality_entry_count):
             self.read_string()
 
         fragments_count = self.read_unsigned_int()
         fragments = []
-        for i in range(fragments_count):
+        for _ in range(fragments_count):
             first = self.read_unsigned_int()
             first_ts = self.read_unsigned_long_long()
             duration = self.read_unsigned_int()
@@ -135,11 +135,11 @@ class FlvReader(io.BytesIO):
         self.read_string()  # MovieIdentifier
         server_count = self.read_unsigned_char()
         # ServerEntryTable
-        for i in range(server_count):
+        for _ in range(server_count):
             self.read_string()
         quality_count = self.read_unsigned_char()
         # QualityEntryTable
-        for i in range(quality_count):
+        for _ in range(quality_count):
             self.read_string()
         # DrmData
         self.read_string()
@@ -148,14 +148,14 @@ class FlvReader(io.BytesIO):
 
         segments_count = self.read_unsigned_char()
         segments = []
-        for i in range(segments_count):
+        for _ in range(segments_count):
             box_size, box_type, box_data = self.read_box_info()
             assert box_type == b'asrt'
             segment = FlvReader(box_data).read_asrt()
             segments.append(segment)
         fragments_run_count = self.read_unsigned_char()
         fragments = []
-        for i in range(fragments_run_count):
+        for _ in range(fragments_run_count):
             box_size, box_type, box_data = self.read_box_info()
             assert box_type == b'afrt'
             fragments.append(FlvReader(box_data).read_afrt())
@@ -309,7 +309,7 @@ class F4mFD(FragmentFD):
     def real_download(self, filename, info_dict):
         man_url = info_dict['url']
         requested_bitrate = info_dict.get('tbr')
-        self.to_screen('[%s] Downloading f4m manifest' % self.FD_NAME)
+        self.to_screen(f'[{self.FD_NAME}] Downloading f4m manifest')
 
         urlh = self.ydl.urlopen(self._prepare_url(info_dict, man_url))
         man_url = urlh.url
@@ -326,8 +326,8 @@ class F4mFD(FragmentFD):
             formats = sorted(formats, key=lambda f: f[0])
             rate, media = formats[-1]
         else:
-            rate, media = list(filter(
-                lambda f: int(f[0]) == requested_bitrate, formats))[0]
+            rate, media = next(filter(
+                lambda f: int(f[0]) == requested_bitrate, formats))
 
         # Prefer baseURL for relative URLs as per 11.2 of F4M 3.0 spec.
         man_base_url = get_base_url(doc) or man_url

yt_dlp/downloader/fragment.py

@@ -199,7 +199,7 @@ class FragmentFD(FileDownloader):
                         '.ytdl file is corrupt' if is_corrupt else
                         'Inconsistent state of incomplete fragment download')
                     self.report_warning(
-                        '%s. Restarting from the beginning ...' % message)
+                        f'{message}. Restarting from the beginning ...')
                     ctx['fragment_index'] = resume_len = 0
                     if 'ytdl_corrupt' in ctx:
                         del ctx['ytdl_corrupt']
@@ -366,10 +366,10 @@ class FragmentFD(FileDownloader):
         return decrypt_fragment
 
     def download_and_append_fragments_multiple(self, *args, **kwargs):
-        '''
+        """
         @params (ctx1, fragments1, info_dict1), (ctx2, fragments2, info_dict2), ...
                 all args must be either tuple or list
-        '''
+        """
         interrupt_trigger = [True]
         max_progress = len(args)
         if max_progress == 1:
@@ -424,7 +424,7 @@ class FragmentFD(FileDownloader):
             finally:
                 tpe.shutdown(wait=True)
         if not interrupt_trigger[0] and not is_live:
-            raise KeyboardInterrupt()
+            raise KeyboardInterrupt
         # we expect the user wants to stop and DO WANT the preceding postprocessors to run;
         # so returning a intermediate result here instead of KeyboardInterrupt on live
         return result

yt_dlp/downloader/hls.py

@@ -72,7 +72,7 @@ class HlsFD(FragmentFD):
 
     def real_download(self, filename, info_dict):
         man_url = info_dict['url']
-        self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME)
+        self.to_screen(f'[{self.FD_NAME}] Downloading m3u8 manifest')
 
         urlh = self.ydl.urlopen(self._prepare_url(info_dict, man_url))
         man_url = urlh.url
@@ -228,7 +228,7 @@ class HlsFD(FragmentFD):
                         'url': frag_url,
                         'decrypt_info': decrypt_info,
                         'byte_range': byte_range,
-                        'media_sequence': media_sequence
+                        'media_sequence': media_sequence,
                     })
                     media_sequence += 1
 
@@ -350,9 +350,8 @@ class HlsFD(FragmentFD):
                             # XXX: this should probably be silent as well
                             # or verify that all segments contain the same data
                             self.report_warning(bug_reports_message(
-                                'Discarding a %s block found in the middle of the stream; '
-                                'if the subtitles display incorrectly,'
-                                % (type(block).__name__)))
+                                f'Discarding a {type(block).__name__} block found in the middle of the stream; '
+                                'if the subtitles display incorrectly,'))
                             continue
                     block.write_into(output)
 

yt_dlp/downloader/http.py

@@ -176,7 +176,7 @@ class HttpFD(FileDownloader):
                                 'downloaded_bytes': ctx.resume_len,
                                 'total_bytes': ctx.resume_len,
                             }, info_dict)
-                            raise SucceedDownload()
+                            raise SucceedDownload
                         else:
                             # The length does not match, we start the download over
                             self.report_unable_to_resume()
@@ -194,7 +194,7 @@ class HttpFD(FileDownloader):
 
         def close_stream():
             if ctx.stream is not None:
-                if not ctx.tmpfilename == '-':
+                if ctx.tmpfilename != '-':
                     ctx.stream.close()
                 ctx.stream = None
 
@@ -268,20 +268,20 @@ class HttpFD(FileDownloader):
                         ctx.filename = self.undo_temp_name(ctx.tmpfilename)
                         self.report_destination(ctx.filename)
                     except OSError as err:
-                        self.report_error('unable to open for writing: %s' % str(err))
+                        self.report_error(f'unable to open for writing: {err}')
                         return False
 
                     if self.params.get('xattr_set_filesize', False) and data_len is not None:
                         try:
                             write_xattr(ctx.tmpfilename, 'user.ytdl.filesize', str(data_len).encode())
                         except (XAttrUnavailableError, XAttrMetadataError) as err:
-                            self.report_error('unable to set filesize xattr: %s' % str(err))
+                            self.report_error(f'unable to set filesize xattr: {err}')
 
                 try:
                     ctx.stream.write(data_block)
                 except OSError as err:
                     self.to_stderr('\n')
-                    self.report_error('unable to write data: %s' % str(err))
+                    self.report_error(f'unable to write data: {err}')
                     return False
 
                 # Apply rate limit
@@ -327,7 +327,7 @@ class HttpFD(FileDownloader):
                     elif now - ctx.throttle_start > 3:
                         if ctx.stream is not None and ctx.tmpfilename != '-':
                             ctx.stream.close()
-                        raise ThrottledDownload()
+                        raise ThrottledDownload
                 elif speed:
                     ctx.throttle_start = None
 
@@ -338,7 +338,7 @@ class HttpFD(FileDownloader):
 
             if not is_test and ctx.chunk_size and ctx.content_len is not None and byte_counter < ctx.content_len:
                 ctx.resume_len = byte_counter
-                raise NextFragment()
+                raise NextFragment
 
             if ctx.tmpfilename != '-':
                 ctx.stream.close()

yt_dlp/downloader/ism.py

@@ -251,7 +251,7 @@ class IsmFD(FragmentFD):
         skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
 
         frag_index = 0
-        for i, segment in enumerate(segments):
+        for segment in segments:
             frag_index += 1
             if frag_index <= ctx['fragment_index']:
                 continue

yt_dlp/downloader/mhtml.py

@@ -10,7 +10,7 @@ from ..version import __version__ as YT_DLP_VERSION
 
 
 class MhtmlFD(FragmentFD):
-    _STYLESHEET = """\
+    _STYLESHEET = '''\
 html, body {
     margin: 0;
     padding: 0;
@@ -45,7 +45,7 @@ body > figure > img {
     max-width: 100%;
     max-height: calc(100vh - 5em);
 }
-"""
+'''
     _STYLESHEET = re.sub(r'\s+', ' ', _STYLESHEET)
     _STYLESHEET = re.sub(r'\B \B|(?<=[\w\-]) (?=[^\w\-])|(?<=[^\w\-]) (?=[\w\-])', '', _STYLESHEET)
 
@@ -57,24 +57,19 @@ body > figure > img {
         )).decode('us-ascii') + '?='
 
     def _gen_cid(self, i, fragment, frag_boundary):
-        return '%u.%s@yt-dlp.github.io.invalid' % (i, frag_boundary)
+        return f'{i}.{frag_boundary}@yt-dlp.github.io.invalid'
 
     def _gen_stub(self, *, fragments, frag_boundary, title):
         output = io.StringIO()
 
-        output.write((
+        output.write(
             '<!DOCTYPE html>'
             '<html>'
             '<head>'
-            ''  '<meta name="generator" content="yt-dlp {version}">'
-            ''  '<title>{title}</title>'
-            ''  '<style>{styles}</style>'
-            '<body>'
-        ).format(
-            version=escapeHTML(YT_DLP_VERSION),
-            styles=self._STYLESHEET,
-            title=escapeHTML(title)
-        ))
+            f'<meta name="generator" content="yt-dlp {escapeHTML(YT_DLP_VERSION)}">'
+            f'<title>{escapeHTML(title)}</title>'
+            f'<style>{self._STYLESHEET}</style>'
+            '<body>')
 
         t0 = 0
         for i, frag in enumerate(fragments):
@@ -87,15 +82,12 @@ body > figure > img {
                     num=i + 1,
                     t0=srt_subtitles_timecode(t0),
                     t1=srt_subtitles_timecode(t1),
-                    duration=formatSeconds(frag['duration'], msec=True)
+                    duration=formatSeconds(frag['duration'], msec=True),
                 ))
             except (KeyError, ValueError, TypeError):
                 t1 = None
-                output.write((
-                    '<figcaption>Slide #{num}</figcaption>'
-                ).format(num=i + 1))
-            output.write('<img src="cid:{cid}">'.format(
-                cid=self._gen_cid(i, frag, frag_boundary)))
+                output.write(f'<figcaption>Slide #{i + 1}</figcaption>')
+            output.write(f'<img src="cid:{self._gen_cid(i, frag, frag_boundary)}">')
             output.write('</figure>')
             t0 = t1
 
@@ -126,31 +118,24 @@ body > figure > img {
             stub = self._gen_stub(
                 fragments=fragments,
                 frag_boundary=frag_boundary,
-                title=title
+                title=title,
             )
 
             ctx['dest_stream'].write((
                 'MIME-Version: 1.0\r\n'
                 'From: <nowhere@yt-dlp.github.io.invalid>\r\n'
                 'To: <nowhere@yt-dlp.github.io.invalid>\r\n'
-                'Subject: {title}\r\n'
+                f'Subject: {self._escape_mime(title)}\r\n'
                 'Content-type: multipart/related; '
-                ''  'boundary="{boundary}"; '
-                ''  'type="text/html"\r\n'
-                'X.yt-dlp.Origin: {origin}\r\n'
+                f'boundary="{frag_boundary}"; '
+                'type="text/html"\r\n'
+                f'X.yt-dlp.Origin: {origin}\r\n'
                 '\r\n'
-                '--{boundary}\r\n'
+                f'--{frag_boundary}\r\n'
                 'Content-Type: text/html; charset=utf-8\r\n'
-                'Content-Length: {length}\r\n'
+                f'Content-Length: {len(stub)}\r\n'
                 '\r\n'
-                '{stub}\r\n'
-            ).format(
-                origin=origin,
-                boundary=frag_boundary,
-                length=len(stub),
-                title=self._escape_mime(title),
-                stub=stub
-            ).encode())
+                f'{stub}\r\n').encode())
             extra_state['header_written'] = True
 
         for i, fragment in enumerate(fragments):

yt_dlp/downloader/niconico.py

@@ -15,7 +15,7 @@ class NiconicoDmcFD(FileDownloader):
     def real_download(self, filename, info_dict):
         from ..extractor.niconico import NiconicoIE
 
-        self.to_screen('[%s] Downloading from DMC' % self.FD_NAME)
+        self.to_screen(f'[{self.FD_NAME}] Downloading from DMC')
         ie = NiconicoIE(self.ydl)
         info_dict, heartbeat_info_dict = ie._get_heartbeat_info(info_dict)
 
@@ -34,7 +34,7 @@ class NiconicoDmcFD(FileDownloader):
             try:
                 self.ydl.urlopen(request).read()
             except Exception:
-                self.to_screen('[%s] Heartbeat failed' % self.FD_NAME)
+                self.to_screen(f'[{self.FD_NAME}] Heartbeat failed')
 
             with heartbeat_lock:
                 if not download_complete:
@@ -85,14 +85,14 @@ class NiconicoLiveFD(FileDownloader):
                             'quality': live_quality,
                             'protocol': 'hls+fmp4',
                             'latency': live_latency,
-                            'chasePlay': False
+                            'chasePlay': False,
                         },
                         'room': {
                             'protocol': 'webSocket',
-                            'commentable': True
+                            'commentable': True,
                         },
                         'reconnect': True,
-                    }
+                    },
                 }))
             else:
                 ws = ws_extractor
@@ -118,7 +118,7 @@ class NiconicoLiveFD(FileDownloader):
                     elif self.ydl.params.get('verbose', False):
                         if len(recv) > 100:
                             recv = recv[:100] + '...'
-                        self.to_screen('[debug] Server said: %s' % recv)
+                        self.to_screen(f'[debug] Server said: {recv}')
 
         def ws_main():
             reconnect = False
@@ -128,7 +128,7 @@ class NiconicoLiveFD(FileDownloader):
                     if ret is True:
                         return
                 except BaseException as e:
-                    self.to_screen('[%s] %s: Connection error occured, reconnecting after 10 seconds: %s' % ('niconico:live', video_id, str_or_none(e)))
+                    self.to_screen('[{}] {}: Connection error occured, reconnecting after 10 seconds: {}'.format('niconico:live', video_id, str_or_none(e)))
                     time.sleep(10)
                     continue
                 finally:

yt_dlp/downloader/rtmp.py

@@ -180,9 +180,9 @@ class RtmpFD(FileDownloader):
 
         while retval in (RD_INCOMPLETE, RD_FAILED) and not test and not live:
             prevsize = os.path.getsize(encodeFilename(tmpfilename))
-            self.to_screen('[rtmpdump] Downloaded %s bytes' % prevsize)
+            self.to_screen(f'[rtmpdump] Downloaded {prevsize} bytes')
             time.sleep(5.0)  # This seems to be needed
-            args = basic_args + ['--resume']
+            args = [*basic_args, '--resume']
             if retval == RD_FAILED:
                 args += ['--skip', '1']
             args = [encodeArgument(a) for a in args]
@@ -197,7 +197,7 @@ class RtmpFD(FileDownloader):
                 break
         if retval == RD_SUCCESS or (test and retval == RD_INCOMPLETE):
             fsize = os.path.getsize(encodeFilename(tmpfilename))
-            self.to_screen('[rtmpdump] Downloaded %s bytes' % fsize)
+            self.to_screen(f'[rtmpdump] Downloaded {fsize} bytes')
             self.try_rename(tmpfilename, filename)
             self._hook_progress({
                 'downloaded_bytes': fsize,

yt_dlp/downloader/youtube_live_chat.py

@@ -18,7 +18,7 @@ class YoutubeLiveChatFD(FragmentFD):
 
     def real_download(self, filename, info_dict):
         video_id = info_dict['video_id']
-        self.to_screen('[%s] Downloading live chat' % self.FD_NAME)
+        self.to_screen(f'[{self.FD_NAME}] Downloading live chat')
         if not self.params.get('skip_download') and info_dict['protocol'] == 'youtube_live_chat':
             self.report_warning('Live chat download runs until the livestream ends. '
                                 'If you wish to download the video simultaneously, run a separate yt-dlp instance')

yt_dlp/extractor/abc.py

@@ -4,7 +4,6 @@ import re
 import time
 
 from .common import InfoExtractor
-from ..compat import compat_str
 from ..utils import (
     ExtractorError,
     dict_get,
@@ -67,7 +66,7 @@ class ABCIE(InfoExtractor):
             'ext': 'mp4',
             'title': 'WWI Centenary',
             'description': 'md5:c2379ec0ca84072e86b446e536954546',
-        }
+        },
     }, {
         'url': 'https://www.abc.net.au/news/programs/the-world/2020-06-10/black-lives-matter-protests-spawn-support-for/12342074',
         'info_dict': {
@@ -75,7 +74,7 @@ class ABCIE(InfoExtractor):
             'ext': 'mp4',
             'title': 'Black Lives Matter protests spawn support for Papuans in Indonesia',
             'description': 'md5:2961a17dc53abc558589ccd0fb8edd6f',
-        }
+        },
     }, {
         'url': 'https://www.abc.net.au/btn/newsbreak/btn-newsbreak-20200814/12560476',
         'info_dict': {
@@ -86,7 +85,7 @@ class ABCIE(InfoExtractor):
             'upload_date': '20200813',
             'uploader': 'Behind the News',
             'uploader_id': 'behindthenews',
-        }
+        },
     }, {
         'url': 'https://www.abc.net.au/news/2023-06-25/wagner-boss-orders-troops-back-to-bases-to-avoid-bloodshed/102520540',
         'info_dict': {
@@ -95,7 +94,7 @@ class ABCIE(InfoExtractor):
             'ext': 'mp4',
             'description': 'Wagner troops leave Rostov-on-Don and\xa0Yevgeny Prigozhin will move to Belarus under a deal brokered by Belarusian President Alexander Lukashenko to end the mutiny.',
             'thumbnail': 'https://live-production.wcms.abc-cdn.net.au/0c170f5b57f0105c432f366c0e8e267b?impolicy=wcms_crop_resize&cropH=2813&cropW=5000&xPos=0&yPos=249&width=862&height=485',
-        }
+        },
     }]
 
     def _real_extract(self, url):
@@ -126,7 +125,7 @@ class ABCIE(InfoExtractor):
                 if mobj is None:
                     expired = self._html_search_regex(r'(?s)class="expired-(?:video|audio)".+?<span>(.+?)</span>', webpage, 'expired', None)
                     if expired:
-                        raise ExtractorError('%s said: %s' % (self.IE_NAME, expired), expected=True)
+                        raise ExtractorError(f'{self.IE_NAME} said: {expired}', expected=True)
                     raise ExtractorError('Unable to extract video urls')
 
             urls_info = self._parse_json(
@@ -164,7 +163,7 @@ class ABCIE(InfoExtractor):
                 'height': height,
                 'tbr': bitrate,
                 'filesize': int_or_none(url_info.get('filesize')),
-                'format_id': format_id
+                'format_id': format_id,
             })
 
         return {
@@ -288,13 +287,12 @@ class ABCIViewIE(InfoExtractor):
         stream = next(s for s in video_params['playlist'] if s.get('type') in ('program', 'livestream'))
 
         house_number = video_params.get('episodeHouseNumber') or video_id
-        path = '/auth/hls/sign?ts={0}&hn={1}&d=android-tablet'.format(
-            int(time.time()), house_number)
+        path = f'/auth/hls/sign?ts={int(time.time())}&hn={house_number}&d=android-tablet'
         sig = hmac.new(
             b'android.content.res.Resources',
-            path.encode('utf-8'), hashlib.sha256).hexdigest()
+            path.encode(), hashlib.sha256).hexdigest()
         token = self._download_webpage(
-            'http://iview.abc.net.au{0}&sig={1}'.format(path, sig), video_id)
+            f'http://iview.abc.net.au{path}&sig={sig}', video_id)
 
         def tokenize_url(url, token):
             return update_url_query(url, {
@@ -303,7 +301,7 @@ class ABCIViewIE(InfoExtractor):
 
         for sd in ('1080', '720', 'sd', 'sd-low'):
             sd_url = try_get(
-                stream, lambda x: x['streams']['hls'][sd], compat_str)
+                stream, lambda x: x['streams']['hls'][sd], str)
             if not sd_url:
                 continue
             formats = self._extract_m3u8_formats(
@@ -358,7 +356,7 @@ class ABCIViewShowSeriesIE(InfoExtractor):
             'description': 'md5:93119346c24a7c322d446d8eece430ff',
             'series': 'Upper Middle Bogan',
             'season': 'Series 1',
-            'thumbnail': r're:^https?://cdn\.iview\.abc\.net\.au/thumbs/.*\.jpg$'
+            'thumbnail': r're:^https?://cdn\.iview\.abc\.net\.au/thumbs/.*\.jpg$',
         },
         'playlist_count': 8,
     }, {
@@ -386,7 +384,7 @@ class ABCIViewShowSeriesIE(InfoExtractor):
             'description': 'Satirist Mark Humphries brings his unique perspective on current political events for 7.30.',
             'series': '7.30 Mark Humphries Satire',
             'season': 'Episodes',
-            'thumbnail': r're:^https?://cdn\.iview\.abc\.net\.au/thumbs/.*\.jpg$'
+            'thumbnail': r're:^https?://cdn\.iview\.abc\.net\.au/thumbs/.*\.jpg$',
         },
         'playlist_count': 15,
     }]
@@ -398,7 +396,7 @@ class ABCIViewShowSeriesIE(InfoExtractor):
             r'window\.__INITIAL_STATE__\s*=\s*[\'"](.+?)[\'"]\s*;',
             webpage, 'initial state')
         video_data = self._parse_json(
-            unescapeHTML(webpage_data).encode('utf-8').decode('unicode_escape'), show_id)
+            unescapeHTML(webpage_data).encode().decode('unicode_escape'), show_id)
         video_data = video_data['route']['pageData']['_embedded']
 
         highlight = try_get(video_data, lambda x: x['highlightVideo']['shareUrl'])

yt_dlp/extractor/abcnews.py

@@ -58,7 +58,7 @@ class AbcNewsVideoIE(AMPIE):
         display_id = mobj.group('display_id')
         video_id = mobj.group('id')
         info_dict = self._extract_feed_info(
-            'http://abcnews.go.com/video/itemfeed?id=%s' % video_id)
+            f'http://abcnews.go.com/video/itemfeed?id={video_id}')
         info_dict.update({
             'id': video_id,
             'display_id': display_id,

yt_dlp/extractor/abcotvs.py

@@ -1,5 +1,4 @@
 from .common import InfoExtractor
-from ..compat import compat_str
 from ..utils import (
     dict_get,
     int_or_none,
@@ -57,11 +56,11 @@ class ABCOTVSIE(InfoExtractor):
         data = self._download_json(
             'https://api.abcotvs.com/v2/content', display_id, query={
                 'id': video_id,
-                'key': 'otv.web.%s.story' % station,
+                'key': f'otv.web.{station}.story',
                 'station': station,
             })['data']
         video = try_get(data, lambda x: x['featuredMedia']['video'], dict) or data
-        video_id = compat_str(dict_get(video, ('id', 'publishedKey'), video_id))
+        video_id = str(dict_get(video, ('id', 'publishedKey'), video_id))
         title = video.get('title') or video['linkText']
 
         formats = []

yt_dlp/extractor/abematv.py

@@ -66,8 +66,8 @@ class AbemaLicenseHandler(urllib.request.BaseHandler):
             query={'t': media_token},
             data=json.dumps({
                 'kv': 'a',
-                'lt': ticket
-            }).encode('utf-8'),
+                'lt': ticket,
+            }).encode(),
             headers={
                 'Content-Type': 'application/json',
             })
@@ -77,7 +77,7 @@ class AbemaLicenseHandler(urllib.request.BaseHandler):
 
         h = hmac.new(
             binascii.unhexlify(self.HKEY),
-            (license_response['cid'] + self.ie._DEVICE_ID).encode('utf-8'),
+            (license_response['cid'] + self.ie._DEVICE_ID).encode(),
             digestmod=hashlib.sha256)
         enckey = bytes_to_intlist(h.digest())
 
@@ -103,11 +103,11 @@ class AbemaTVBaseIE(InfoExtractor):
 
     @classmethod
     def _generate_aks(cls, deviceid):
-        deviceid = deviceid.encode('utf-8')
+        deviceid = deviceid.encode()
         # add 1 hour and then drop minute and secs
         ts_1hour = int((time_seconds() // 3600 + 1) * 3600)
         time_struct = time.gmtime(ts_1hour)
-        ts_1hour_str = str(ts_1hour).encode('utf-8')
+        ts_1hour_str = str(ts_1hour).encode()
 
         tmp = None
 
@@ -119,7 +119,7 @@ class AbemaTVBaseIE(InfoExtractor):
 
         def mix_tmp(count):
             nonlocal tmp
-            for i in range(count):
+            for _ in range(count):
                 mix_once(tmp)
 
         def mix_twist(nonce):
@@ -160,7 +160,7 @@ class AbemaTVBaseIE(InfoExtractor):
             data=json.dumps({
                 'deviceId': self._DEVICE_ID,
                 'applicationKeySecret': aks,
-            }).encode('utf-8'),
+            }).encode(),
             headers={
                 'Content-Type': 'application/json',
             })
@@ -180,7 +180,7 @@ class AbemaTVBaseIE(InfoExtractor):
                 'osLang': 'ja_JP',
                 'osTimezone': 'Asia/Tokyo',
                 'appId': 'tv.abema',
-                'appVersion': '3.27.1'
+                'appVersion': '3.27.1',
             }, headers={
                 'Authorization': f'bearer {self._get_device_token()}',
             })['token']
@@ -202,8 +202,8 @@ class AbemaTVBaseIE(InfoExtractor):
             f'https://api.abema.io/v1/auth/{ep}', None, note='Logging in',
             data=json.dumps({
                 method: username,
-                'password': password
-            }).encode('utf-8'), headers={
+                'password': password,
+            }).encode(), headers={
                 'Authorization': f'bearer {self._get_device_token()}',
                 'Origin': 'https://abema.tv',
                 'Referer': 'https://abema.tv/',
@@ -344,7 +344,7 @@ class AbemaTVIE(AbemaTVBaseIE):
 
         description = self._html_search_regex(
             (r'<p\s+class="com-video-EpisodeDetailsBlock__content"><span\s+class=".+?">(.+?)</span></p><div',
-             r'<span\s+class=".+?SlotSummary.+?">(.+?)</span></div><div',),
+             r'<span\s+class=".+?SlotSummary.+?">(.+?)</span></div><div'),
             webpage, 'description', default=None, group=1)
         if not description:
             og_desc = self._html_search_meta(

yt_dlp/extractor/acast.py

@@ -67,7 +67,7 @@ class ACastIE(ACastBaseIE):
             'display_id': '2.raggarmordet-rosterurdetforflutna',
             'season_number': 4,
             'season': 'Season 4',
-        }
+        },
     }, {
         'url': 'http://embed.acast.com/adambuxton/ep.12-adam-joeschristmaspodcast2015',
         'only_matching': True,
@@ -93,13 +93,13 @@ class ACastIE(ACastBaseIE):
             'series': 'Democracy Sausage with Mark Kenny',
             'timestamp': 1684826362,
             'description': 'md5:feabe1fc5004c78ee59c84a46bf4ba16',
-        }
+        },
     }]
 
     def _real_extract(self, url):
         channel, display_id = self._match_valid_url(url).groups()
         episode = self._call_api(
-            '%s/episodes/%s' % (channel, display_id),
+            f'{channel}/episodes/{display_id}',
             display_id, {'showInfo': 'true'})
         return self._extract_episode(
             episode, self._extract_show_info(episode.get('show') or {}))
@@ -130,7 +130,7 @@ class ACastChannelIE(ACastBaseIE):
 
     @classmethod
     def suitable(cls, url):
-        return False if ACastIE.suitable(url) else super(ACastChannelIE, cls).suitable(url)
+        return False if ACastIE.suitable(url) else super().suitable(url)
 
     def _real_extract(self, url):
         show_slug = self._match_id(url)

yt_dlp/extractor/acfun.py

@@ -25,7 +25,7 @@ class AcFunVideoBaseIE(InfoExtractor):
                     'width': int_or_none(video.get('width')),
                     'height': int_or_none(video.get('height')),
                     'tbr': float_or_none(video.get('avgBitrate')),
-                    **parse_codecs(video.get('codecs', ''))
+                    **parse_codecs(video.get('codecs', '')),
                 })
 
         return {
@@ -77,7 +77,7 @@ class AcFunVideoIE(AcFunVideoBaseIE):
             'comment_count': int,
             'thumbnail': r're:^https?://.*\.(jpg|jpeg)',
             'description': 'md5:67583aaf3a0f933bd606bc8a2d3ebb17',
-        }
+        },
     }]
 
     def _real_extract(self, url):

yt_dlp/extractor/adn.py

@@ -7,7 +7,6 @@ import time
 
 from .common import InfoExtractor
 from ..aes import aes_cbc_decrypt_bytes, unpad_pkcs7
-from ..compat import compat_b64decode
 from ..networking.exceptions import HTTPError
 from ..utils import (
     ExtractorError,
@@ -111,9 +110,9 @@ class ADNIE(ADNBaseIE):
 
         # http://animationdigitalnetwork.fr/components/com_vodvideo/videojs/adn-vjs.min.js
         dec_subtitles = unpad_pkcs7(aes_cbc_decrypt_bytes(
-            compat_b64decode(enc_subtitles[24:]),
+            base64.b64decode(enc_subtitles[24:]),
             binascii.unhexlify(self._K + '7fac1178830cfe0c'),
-            compat_b64decode(enc_subtitles[:24])))
+            base64.b64decode(enc_subtitles[:24])))
         subtitles_json = self._parse_json(dec_subtitles.decode(), None, fatal=False)
         if not subtitles_json:
             return None
@@ -136,7 +135,7 @@ Format: Marked,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text'''
                 if start is None or end is None or text is None:
                     continue
                 alignment = self._POS_ALIGN_MAP.get(position_align, 2) + self._LINE_ALIGN_MAP.get(line_align, 0)
-                ssa += os.linesep + 'Dialogue: Marked=0,%s,%s,Default,,0,0,0,,%s%s' % (
+                ssa += os.linesep + 'Dialogue: Marked=0,{},{},Default,,0,0,0,,{}{}'.format(
                     ass_subtitles_timecode(start),
                     ass_subtitles_timecode(end),
                     '{\\a%d}' % alignment if alignment != 2 else '',
@@ -178,7 +177,7 @@ Format: Marked,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text'''
 
     def _real_extract(self, url):
         lang, video_id = self._match_valid_url(url).group('lang', 'id')
-        video_base_url = self._PLAYER_BASE_URL + 'video/%s/' % video_id
+        video_base_url = self._PLAYER_BASE_URL + f'video/{video_id}/'
         player = self._download_json(
             video_base_url + 'configuration', video_id,
             'Downloading player config JSON metadata',
@@ -219,12 +218,12 @@ Format: Marked,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text'''
                     links_url, video_id, 'Downloading links JSON metadata', headers={
                         'X-Player-Token': authorization,
                         'X-Target-Distribution': lang,
-                        **self._HEADERS
+                        **self._HEADERS,
                     }, query={
                         'freeWithAds': 'true',
                         'adaptive': 'false',
                         'withMetadata': 'true',
-                        'source': 'Web'
+                        'source': 'Web',
                     })
                 break
             except ExtractorError as e:
@@ -256,7 +255,7 @@ Format: Marked,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text'''
             for quality, load_balancer_url in qualities.items():
                 load_balancer_data = self._download_json(
                     load_balancer_url, video_id,
-                    'Downloading %s %s JSON metadata' % (format_id, quality),
+                    f'Downloading {format_id} {quality} JSON metadata',
                     fatal=False) or {}
                 m3u8_url = load_balancer_data.get('location')
                 if not m3u8_url:
@@ -276,7 +275,7 @@ Format: Marked,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text'''
             self.raise_login_required('This video requires a subscription', method='password')
 
         video = (self._download_json(
-            self._API_BASE_URL + 'video/%s' % video_id, video_id,
+            self._API_BASE_URL + f'video/{video_id}', video_id,
             'Downloading additional video metadata', fatal=False) or {}).get('video') or {}
         show = video.get('show') or {}
 
@@ -320,7 +319,7 @@ class ADNSeasonIE(ADNBaseIE):
             f'{self._API_BASE_URL}video/show/{show_id}', video_show_slug,
             'Downloading episode list', headers={
                 'X-Target-Distribution': lang,
-                **self._HEADERS
+                **self._HEADERS,
             }, query={
                 'order': 'asc',
                 'limit': '-1',

yt_dlp/extractor/adobeconnect.py

@@ -1,8 +1,6 @@
+import urllib.parse
+
 from .common import InfoExtractor
-from ..compat import (
-    compat_parse_qs,
-    compat_urlparse,
-)
 
 
 class AdobeConnectIE(InfoExtractor):
@@ -12,13 +10,13 @@ class AdobeConnectIE(InfoExtractor):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
         title = self._html_extract_title(webpage)
-        qs = compat_parse_qs(self._search_regex(r"swfUrl\s*=\s*'([^']+)'", webpage, 'swf url').split('?')[1])
+        qs = urllib.parse.parse_qs(self._search_regex(r"swfUrl\s*=\s*'([^']+)'", webpage, 'swf url').split('?')[1])
         is_live = qs.get('isLive', ['false'])[0] == 'true'
         formats = []
         for con_string in qs['conStrings'][0].split(','):
             formats.append({
                 'format_id': con_string.split('://')[0],
-                'app': compat_urlparse.quote('?' + con_string.split('?')[1] + 'flvplayerapp/' + qs['appInstance'][0]),
+                'app': urllib.parse.quote('?' + con_string.split('?')[1] + 'flvplayerapp/' + qs['appInstance'][0]),
                 'ext': 'flv',
                 'play_path': 'mp4:' + qs['streamName'][0],
                 'rtmp_conn': 'S:' + qs['ticket'][0],

yt_dlp/extractor/adobetv.py

@@ -2,7 +2,6 @@ import functools
 import re
 
 from .common import InfoExtractor
-from ..compat import compat_str
 from ..utils import (
     ISO639Utils,
     OnDemandPagedList,
@@ -36,7 +35,7 @@ class AdobeTVBaseIE(InfoExtractor):
         return subtitles
 
     def _parse_video_data(self, video_data):
-        video_id = compat_str(video_data['id'])
+        video_id = str(video_data['id'])
         title = video_data['title']
 
         s3_extracted = False
@@ -151,7 +150,7 @@ class AdobeTVPlaylistBaseIE(AdobeTVBaseIE):
         page += 1
         query['page'] = page
         for element_data in self._call_api(
-                self._RESOURCE, display_id, query, 'Download Page %d' % page):
+                self._RESOURCE, display_id, query, f'Download Page {page}'):
             yield self._process_data(element_data)
 
     def _extract_playlist_entries(self, display_id, query):

yt_dlp/extractor/adultswim.py

@@ -91,7 +91,7 @@ class AdultSwimIE(TurnerBaseIE):
   getShowBySlug(slug:"%s") {
     %%s
   }
-}''' % show_path
+}''' % show_path  # noqa: UP031
         if episode_path:
             query = query % '''title
     getVideoBySlug(slug:"%s") {
@@ -128,7 +128,7 @@ class AdultSwimIE(TurnerBaseIE):
             episode_title = title = video_data['title']
             series = show_data.get('title')
             if series:
-                title = '%s - %s' % (series, title)
+                title = f'{series} - {title}'
             info = {
                 'id': video_id,
                 'title': title,
@@ -191,7 +191,7 @@ class AdultSwimIE(TurnerBaseIE):
                 if not slug:
                     continue
                 entries.append(self.url_result(
-                    'http://adultswim.com/videos/%s/%s' % (show_path, slug),
+                    f'http://adultswim.com/videos/{show_path}/{slug}',
                     'AdultSwim', video.get('_id')))
             return self.playlist_result(
                 entries, show_path, show_data.get('title'),

yt_dlp/extractor/aenetworks.py

@@ -73,8 +73,8 @@ class AENetworksBaseIE(ThePlatformIE):  # XXX: Do not subclass from concrete IE
     def _extract_aetn_info(self, domain, filter_key, filter_value, url):
         requestor_id, brand = self._DOMAIN_MAP[domain]
         result = self._download_json(
-            'https://feeds.video.aetnd.com/api/v2/%s/videos' % brand,
-            filter_value, query={'filter[%s]' % filter_key: filter_value})
+            f'https://feeds.video.aetnd.com/api/v2/{brand}/videos',
+            filter_value, query={f'filter[{filter_key}]': filter_value})
         result = traverse_obj(
             result, ('results',
                      lambda k, v: k == 0 and v[filter_key] == filter_value),
@@ -142,7 +142,7 @@ class AENetworksIE(AENetworksBaseIE):
             'skip_download': True,
         },
         'add_ie': ['ThePlatform'],
-        'skip': 'Geo-restricted - This content is not available in your location.'
+        'skip': 'Geo-restricted - This content is not available in your location.',
     }, {
         'url': 'http://www.aetv.com/shows/duck-dynasty/season-9/episode-1',
         'info_dict': {
@@ -171,28 +171,28 @@ class AENetworksIE(AENetworksBaseIE):
         'skip': 'This video is only available for users of participating TV providers.',
     }, {
         'url': 'http://www.fyi.tv/shows/tiny-house-nation/season-1/episode-8',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'http://www.mylifetime.com/shows/project-runway-junior/season-1/episode-6',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'http://www.mylifetime.com/movies/center-stage-on-pointe/full-movie',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'https://watch.lifetimemovieclub.com/movies/10-year-reunion/full-movie',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'http://www.history.com/specials/sniper-into-the-kill-zone/full-special',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'https://www.aetv.com/specials/hunting-jonbenets-killer-the-untold-story/preview-hunting-jonbenets-killer-the-untold-story',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'http://www.history.com/videos/history-of-valentines-day',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'https://play.aetv.com/shows/duck-dynasty/videos/best-of-duck-dynasty-getting-quack-in-shape',
-        'only_matching': True
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):
@@ -209,14 +209,14 @@ class AENetworksListBaseIE(AENetworksBaseIE):
   %s(slug: "%s") {
     %s
   }
-}''' % (resource, slug, fields),
+}''' % (resource, slug, fields),  # noqa: UP031
             }))['data'][resource]
 
     def _real_extract(self, url):
         domain, slug = self._match_valid_url(url).groups()
         _, brand = self._DOMAIN_MAP[domain]
         playlist = self._call_api(self._RESOURCE, slug, brand, self._FIELDS)
-        base_url = 'http://watch.%s' % domain
+        base_url = f'http://watch.{domain}'
 
         entries = []
         for item in (playlist.get(self._ITEMS_KEY) or []):
@@ -248,10 +248,10 @@ class AENetworksCollectionIE(AENetworksListBaseIE):
         'playlist_mincount': 12,
     }, {
         'url': 'https://watch.historyvault.com/shows/america-the-story-of-us-2/season-1/list/america-the-story-of-us',
-        'only_matching': True
+        'only_matching': True,
     }, {
         'url': 'https://www.historyvault.com/collections/mysteryquest',
-        'only_matching': True
+        'only_matching': True,
     }]
     _RESOURCE = 'list'
     _ITEMS_KEY = 'items'
@@ -309,7 +309,7 @@ class HistoryTopicIE(AENetworksBaseIE):
         'info_dict': {
             'id': '40700995724',
             'ext': 'mp4',
-            'title': "History of Valentine’s Day",
+            'title': 'History of Valentine’s Day',
             'description': 'md5:7b57ea4829b391995b405fa60bd7b5f7',
             'timestamp': 1375819729,
             'upload_date': '20130806',
@@ -364,6 +364,6 @@ class BiographyIE(AENetworksBaseIE):
         display_id = self._match_id(url)
         webpage = self._download_webpage(url, display_id)
         player_url = self._search_regex(
-            r'<phoenix-iframe[^>]+src="(%s)' % HistoryPlayerIE._VALID_URL,
+            rf'<phoenix-iframe[^>]+src="({HistoryPlayerIE._VALID_URL})',
             webpage, 'player URL')
         return self.url_result(player_url, HistoryPlayerIE.ie_key())

yt_dlp/extractor/aeonco.py

@@ -16,8 +16,8 @@ class AeonCoIE(InfoExtractor):
             'uploader': 'Semiconductor',
             'uploader_id': 'semiconductor',
             'uploader_url': 'https://vimeo.com/semiconductor',
-            'duration': 348
-        }
+            'duration': 348,
+        },
     }, {
         'url': 'https://aeon.co/videos/dazzling-timelapse-shows-how-microbes-spoil-our-food-and-sometimes-enrich-it',
         'md5': '03582d795382e49f2fd0b427b55de409',
@@ -29,8 +29,8 @@ class AeonCoIE(InfoExtractor):
             'uploader': 'Aeon Video',
             'uploader_id': 'aeonvideo',
             'uploader_url': 'https://vimeo.com/aeonvideo',
-            'duration': 1344
-        }
+            'duration': 1344,
+        },
     }, {
         'url': 'https://aeon.co/videos/chew-over-the-prisoners-dilemma-and-see-if-you-can-find-the-rational-path-out',
         'md5': '1cfda0bf3ae24df17d00f2c0cb6cc21b',

yt_dlp/extractor/afreecatv.py

@@ -55,7 +55,7 @@ class AfreecaTVBaseIE(InfoExtractor):
         if result != 1:
             error = _ERRORS.get(result, 'You have failed to log in.')
             raise ExtractorError(
-                'Unable to login: %s said: %s' % (self.IE_NAME, error),
+                f'Unable to login: {self.IE_NAME} said: {error}',
                 expected=True)
 
 
@@ -227,7 +227,7 @@ class AfreecaTVIE(AfreecaTVBaseIE):
                 **traverse_obj(file_element, {
                     'duration': ('duration', {functools.partial(int_or_none, scale=1000)}),
                     'timestamp': ('file_start', {unified_timestamp}),
-                })
+                }),
             })
 
         if traverse_obj(data, ('adult_status', {str})) == 'notLogin':

yt_dlp/extractor/agora.py

@@ -168,7 +168,7 @@ class TokFMPodcastIE(InfoExtractor):
         for ext in ('aac', 'mp3'):
             url_data = self._download_json(
                 f'https://api.podcast.radioagora.pl/api4/getSongUrl?podcast_id={media_id}&device_id={uuid.uuid4()}&ppre=false&audio={ext}',
-                media_id, 'Downloading podcast %s URL' % ext)
+                media_id, f'Downloading podcast {ext} URL')
             # prevents inserting the mp3 (default) multiple times
             if 'link_ssl' in url_data and f'.{ext}' in url_data['link_ssl']:
                 formats.append({
@@ -206,8 +206,8 @@ class TokFMAuditionIE(InfoExtractor):
     }
 
     @staticmethod
-    def _create_url(id):
-        return f'https://audycje.tokfm.pl/audycja/{id}'
+    def _create_url(video_id):
+        return f'https://audycje.tokfm.pl/audycja/{video_id}'
 
     def _real_extract(self, url):
         audition_id = self._match_id(url)

yt_dlp/extractor/airtv.py

@@ -26,7 +26,7 @@ class AirTVIE(InfoExtractor):
             'view_count': int,
             'thumbnail': 'https://cdn-sp-gcs.air.tv/videos/W/8/W87jcWleSn2hXZN47zJZsQ/b13fc56464f47d9d62a36d110b9b5a72-4096x2160_9.jpg',
             'timestamp': 1664792603,
-        }
+        },
     }, {
         # with youtube_id
         'url': 'https://www.air.tv/watch?v=sv57EC8tRXG6h8dNXFUU1Q',
@@ -54,7 +54,7 @@ class AirTVIE(InfoExtractor):
             'channel': 'Newsflare',
             'duration': 37,
             'upload_date': '20180511',
-        }
+        },
     }]
 
     def _get_formats_and_subtitle(self, json_data, video_id):

yt_dlp/extractor/aitube.py

@@ -22,7 +22,7 @@ class AitubeKZVideoIE(InfoExtractor):
             'timestamp': 1667370519,
             'title': 'Ангел хранитель 1 серия',
             'channel_follower_count': int,
-        }
+        },
     }, {
         # embed url
         'url': 'https://aitube.kz/embed/?id=9291d29b-c038-49a1-ad42-3da2051d353c',

yt_dlp/extractor/aliexpress.py

@@ -1,5 +1,4 @@
 from .common import InfoExtractor
-from ..compat import compat_str
 from ..utils import (
     float_or_none,
     try_get,
@@ -44,7 +43,7 @@ class AliExpressLiveIE(InfoExtractor):
             'title': title,
             'thumbnail': data.get('coverUrl'),
             'uploader': try_get(
-                data, lambda x: x['followBar']['name'], compat_str),
+                data, lambda x: x['followBar']['name'], str),
             'timestamp': float_or_none(data.get('startTimeLong'), scale=1000),
             'formats': formats,
         }

yt_dlp/extractor/aljazeera.py

@@ -18,7 +18,7 @@ class AlJazeeraIE(InfoExtractor):
             'timestamp': 1636219149,
             'description': 'U sarajevskim naseljima Rajlovac i Reljevo stambeni objekti, ali i industrijska postrojenja i dalje su pod vodom.',
             'upload_date': '20211106',
-        }
+        },
     }, {
         'url': 'https://balkans.aljazeera.net/videos/2021/11/6/djokovic-usao-u-finale-mastersa-u-parizu',
         'info_dict': {
@@ -33,7 +33,7 @@ class AlJazeeraIE(InfoExtractor):
     BRIGHTCOVE_URL_RE = r'https?://players.brightcove.net/(?P<account>\d+)/(?P<player_id>[a-zA-Z0-9]+)_(?P<embed>[^/]+)/index.html\?videoId=(?P<id>\d+)'
 
     def _real_extract(self, url):
-        base, post_type, id = self._match_valid_url(url).groups()
+        base, post_type, display_id = self._match_valid_url(url).groups()
         wp = {
             'balkans.aljazeera.net': 'ajb',
             'chinese.aljazeera.net': 'chinese',
@@ -47,11 +47,11 @@ class AlJazeeraIE(InfoExtractor):
             'news': 'news',
         }[post_type.split('/')[0]]
         video = self._download_json(
-            f'https://{base}/graphql', id, query={
+            f'https://{base}/graphql', display_id, query={
                 'wp-site': wp,
                 'operationName': 'ArchipelagoSingleArticleQuery',
                 'variables': json.dumps({
-                    'name': id,
+                    'name': display_id,
                     'postType': post_type,
                 }),
             }, headers={
@@ -64,7 +64,7 @@ class AlJazeeraIE(InfoExtractor):
         embed = 'default'
 
         if video_id is None:
-            webpage = self._download_webpage(url, id)
+            webpage = self._download_webpage(url, display_id)
 
             account, player_id, embed, video_id = self._search_regex(self.BRIGHTCOVE_URL_RE, webpage, 'video id',
                                                                      group=(1, 2, 3, 4), default=(None, None, None, None))
@@ -73,11 +73,11 @@ class AlJazeeraIE(InfoExtractor):
                 return {
                     '_type': 'url_transparent',
                     'url': url,
-                    'ie_key': 'Generic'
+                    'ie_key': 'Generic',
                 }
 
         return {
             '_type': 'url_transparent',
             'url': f'https://players.brightcove.net/{account}/{player_id}_{embed}/index.html?videoId={video_id}',
-            'ie_key': 'BrightcoveNew'
+            'ie_key': 'BrightcoveNew',
         }

yt_dlp/extractor/allocine.py

@@ -1,5 +1,4 @@
 from .common import InfoExtractor
-from ..compat import compat_str
 from ..utils import (
     int_or_none,
     qualities,
@@ -95,11 +94,11 @@ class AllocineIE(InfoExtractor):
             duration = int_or_none(video.get('duration'))
             view_count = int_or_none(video.get('view_count'))
             timestamp = unified_timestamp(try_get(
-                video, lambda x: x['added_at']['date'], compat_str))
+                video, lambda x: x['added_at']['date'], str))
         else:
             video_id = display_id
             media_data = self._download_json(
-                'http://www.allocine.fr/ws/AcVisiondataV5.ashx?media=%s' % video_id, display_id)
+                f'http://www.allocine.fr/ws/AcVisiondataV5.ashx?media={video_id}', display_id)
             title = remove_end(strip_or_none(self._html_extract_title(webpage), ' - AlloCiné'))
             for key, value in media_data['video'].items():
                 if not key.endswith('Path'):

yt_dlp/extractor/allstar.py

@@ -33,27 +33,27 @@ _QUERIES = {
         video: getClip(clipIdentifier: $id) {
             %s %s
         }
-    }''' % (_FIELDS, _EXTRA_FIELDS),
+    }''' % (_FIELDS, _EXTRA_FIELDS),  # noqa: UP031
     'montage': '''query ($id: String!) {
         video: getMontage(clipIdentifier: $id) {
             %s
         }
-    }''' % _FIELDS,
+    }''' % _FIELDS,  # noqa: UP031
     'Clips': '''query ($page: Int!, $user: String!, $game: Int) {
         videos: clips(search: createdDate, page: $page, user: $user, mobile: false, game: $game) {
             data { %s %s }
         }
-    }''' % (_FIELDS, _EXTRA_FIELDS),
+    }''' % (_FIELDS, _EXTRA_FIELDS),  # noqa: UP031
     'Montages': '''query ($page: Int!, $user: String!) {
         videos: montages(search: createdDate, page: $page, user: $user) {
             data { %s }
         }
-    }''' % _FIELDS,
+    }''' % _FIELDS,  # noqa: UP031
     'Mobile Clips': '''query ($page: Int!, $user: String!) {
         videos: clips(search: createdDate, page: $page, user: $user, mobile: true) {
             data { %s %s }
         }
-    }''' % (_FIELDS, _EXTRA_FIELDS),
+    }''' % (_FIELDS, _EXTRA_FIELDS),  # noqa: UP031
 }
 
 
@@ -121,7 +121,7 @@ class AllstarIE(AllstarBaseIE):
             'uploader_url': 'https://allstar.gg/u/62b8bdfc9021052f7905882d',
             'upload_date': '20230425',
             'view_count': int,
-        }
+        },
     }, {
         'url': 'https://allstar.gg/clip?clip=8LJLY4JKB',
         'info_dict': {
@@ -139,7 +139,7 @@ class AllstarIE(AllstarBaseIE):
             'uploader_url': 'https://allstar.gg/u/62b8bdfc9021052f7905882d',
             'upload_date': '20230702',
             'view_count': int,
-        }
+        },
     }, {
         'url': 'https://allstar.gg/montage?montage=643e64089da7e9363e1fa66c',
         'info_dict': {
@@ -155,7 +155,7 @@ class AllstarIE(AllstarBaseIE):
             'uploader_url': 'https://allstar.gg/u/62b8bdfc9021052f7905882d',
             'upload_date': '20230418',
             'view_count': int,
-        }
+        },
     }, {
         'url': 'https://allstar.gg/montage?montage=RILJMH6QOS',
         'info_dict': {
@@ -171,7 +171,7 @@ class AllstarIE(AllstarBaseIE):
             'uploader_url': 'https://allstar.gg/u/62b8bdfc9021052f7905882d',
             'upload_date': '20230703',
             'view_count': int,
-        }
+        },
     }]
 
     def _real_extract(self, url):
@@ -191,28 +191,28 @@ class AllstarProfileIE(AllstarBaseIE):
             'id': '62b8bdfc9021052f7905882d-clips',
             'title': 'cherokee - Clips',
         },
-        'playlist_mincount': 15
+        'playlist_mincount': 15,
     }, {
         'url': 'https://allstar.gg/u/cherokee?game=730&view=Clips',
         'info_dict': {
             'id': '62b8bdfc9021052f7905882d-clips-730',
             'title': 'cherokee - Clips - 730',
         },
-        'playlist_mincount': 15
+        'playlist_mincount': 15,
     }, {
         'url': 'https://allstar.gg/u/62b8bdfc9021052f7905882d?view=Montages',
         'info_dict': {
             'id': '62b8bdfc9021052f7905882d-montages',
             'title': 'cherokee - Montages',
         },
-        'playlist_mincount': 4
+        'playlist_mincount': 4,
     }, {
         'url': 'https://allstar.gg/profile?user=cherokee&view=Mobile Clips',
         'info_dict': {
             'id': '62b8bdfc9021052f7905882d-mobile',
             'title': 'cherokee - Mobile Clips',
         },
-        'playlist_mincount': 1
+        'playlist_mincount': 1,
     }]
 
     _PAGE_SIZE = 10

yt_dlp/extractor/alphaporno.py

@@ -25,7 +25,7 @@ class AlphaPornoIE(InfoExtractor):
             'tbr': 1145,
             'categories': list,
             'age_limit': 18,
-        }
+        },
     }
 
     def _real_extract(self, url):

yt_dlp/extractor/alsace20tv.py

@@ -12,7 +12,7 @@ from ..utils import (
 class Alsace20TVBaseIE(InfoExtractor):
     def _extract_video(self, video_id, url=None):
         info = self._download_json(
-            'https://www.alsace20.tv/visionneuse/visio_v9_js.php?key=%s&habillage=0&mode=html' % (video_id, ),
+            f'https://www.alsace20.tv/visionneuse/visio_v9_js.php?key={video_id}&habillage=0&mode=html',
             video_id) or {}
         title = info.get('titre')
 
@@ -24,9 +24,9 @@ class Alsace20TVBaseIE(InfoExtractor):
                 else self._extract_mpd_formats(fmt_url, video_id, mpd_id=res, fatal=False))
 
         webpage = (url and self._download_webpage(url, video_id, fatal=False)) or ''
-        thumbnail = url_or_none(dict_get(info, ('image', 'preview', )) or self._og_search_thumbnail(webpage))
+        thumbnail = url_or_none(dict_get(info, ('image', 'preview')) or self._og_search_thumbnail(webpage))
         upload_date = self._search_regex(r'/(\d{6})_', thumbnail, 'upload_date', default=None)
-        upload_date = unified_strdate('20%s-%s-%s' % (upload_date[:2], upload_date[2:4], upload_date[4:])) if upload_date else None
+        upload_date = unified_strdate(f'20{upload_date[:2]}-{upload_date[2:4]}-{upload_date[4:]}') if upload_date else None
         return {
             'id': video_id,
             'title': title,

yt_dlp/extractor/altcensored.py

@@ -34,7 +34,7 @@ class AltCensoredIE(InfoExtractor):
             'thumbnail': 'https://archive.org/download/youtube-k0srjLSkga8/youtube-k0srjLSkga8.thumbs/k0srjLSkga8_000925.jpg',
             'view_count': int,
             'categories': ['News & Politics'],
-        }
+        },
     }]
 
     def _real_extract(self, url):

yt_dlp/extractor/alura.py

@@ -1,7 +1,7 @@
 import re
+import urllib.parse
 
 from .common import InfoExtractor
-from ..compat import compat_urlparse
 from ..utils import (
     ExtractorError,
     clean_html,
@@ -21,7 +21,7 @@ class AluraIE(InfoExtractor):
         'info_dict': {
             'id': '60095',
             'ext': 'mp4',
-            'title': 'Referências, ref-set e alter'
+            'title': 'Referências, ref-set e alter',
         },
         'skip': 'Requires alura account credentials'},
         {
@@ -30,7 +30,7 @@ class AluraIE(InfoExtractor):
             'only_matching': True},
         {
             'url': 'https://cursos.alura.com.br/course/fundamentos-market-digital/task/55219',
-            'only_matching': True}
+            'only_matching': True},
     ]
 
     def _real_extract(self, url):
@@ -62,7 +62,7 @@ class AluraIE(InfoExtractor):
             return {
                 'id': video_id,
                 'title': video_title,
-                "formats": formats
+                'formats': formats,
             }
 
     def _perform_login(self, username, password):
@@ -91,7 +91,7 @@ class AluraIE(InfoExtractor):
             'post url', default=self._LOGIN_URL, group='url')
 
         if not post_url.startswith('http'):
-            post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
+            post_url = urllib.parse.urljoin(self._LOGIN_URL, post_url)
 
         response = self._download_webpage(
             post_url, None, 'Logging in',
@@ -103,7 +103,7 @@ class AluraIE(InfoExtractor):
                 r'(?s)<p[^>]+class="alert-message[^"]*">(.+?)</p>',
                 response, 'error message', default=None)
             if error:
-                raise ExtractorError('Unable to login: %s' % error, expected=True)
+                raise ExtractorError(f'Unable to login: {error}', expected=True)
             raise ExtractorError('Unable to log in')
 
 
@@ -119,7 +119,7 @@ class AluraCourseIE(AluraIE):  # XXX: Do not subclass from concrete IE
 
     @classmethod
     def suitable(cls, url):
-        return False if AluraIE.suitable(url) else super(AluraCourseIE, cls).suitable(url)
+        return False if AluraIE.suitable(url) else super().suitable(url)
 
     def _real_extract(self, url):
 
@@ -157,7 +157,7 @@ class AluraCourseIE(AluraIE):  # XXX: Do not subclass from concrete IE
                         'url': video_url,
                         'id_key': self.ie_key(),
                         'chapter': chapter,
-                        'chapter_number': chapter_number
+                        'chapter_number': chapter_number,
                     }
                     entries.append(entry)
         return self.playlist_result(entries, course_path, course_title)

yt_dlp/extractor/amadeustv.py

@@ -24,7 +24,7 @@ class AmadeusTVIE(InfoExtractor):
             'display_id': '65091a87ff85af59d9fc54c3',
             'view_count': int,
             'description': 'md5:a0357b9c215489e2067cbae0b777bb95',
-        }
+        },
     }]
 
     def _real_extract(self, url):

yt_dlp/extractor/amara.py

@@ -25,7 +25,7 @@ class AmaraIE(InfoExtractor):
             'uploader': 'PBS NewsHour',
             'uploader_id': 'PBSNewsHour',
             'timestamp': 1549639570,
-        }
+        },
     }, {
         # Vimeo
         'url': 'https://amara.org/en/videos/kYkK1VUTWW5I/info/vimeo-at-ces-2011',
@@ -40,8 +40,8 @@ class AmaraIE(InfoExtractor):
             'timestamp': 1294763658,
             'upload_date': '20110111',
             'uploader': 'Sam Morrill',
-            'uploader_id': 'sammorrill'
-        }
+            'uploader_id': 'sammorrill',
+        },
     }, {
         # Direct Link
         'url': 'https://amara.org/en/videos/s8KL7I3jLmh6/info/the-danger-of-a-single-story/',
@@ -55,13 +55,13 @@ class AmaraIE(InfoExtractor):
             'subtitles': dict,
             'upload_date': '20091007',
             'timestamp': 1254942511,
-        }
+        },
     }]
 
     def _real_extract(self, url):
         video_id = self._match_id(url)
         meta = self._download_json(
-            'https://amara.org/api/videos/%s/' % video_id,
+            f'https://amara.org/api/videos/{video_id}/',
             video_id, query={'format': 'json'})
         title = meta['title']
         video_url = meta['all_urls'][0]

yt_dlp/extractor/amazon.py

@@ -61,13 +61,13 @@ class AmazonStoreIE(InfoExtractor):
     }]
 
     def _real_extract(self, url):
-        id = self._match_id(url)
+        playlist_id = self._match_id(url)
 
         for retry in self.RetryManager():
-            webpage = self._download_webpage(url, id)
+            webpage = self._download_webpage(url, playlist_id)
             try:
                 data_json = self._search_json(
-                    r'var\s?obj\s?=\s?jQuery\.parseJSON\(\'', webpage, 'data', id,
+                    r'var\s?obj\s?=\s?jQuery\.parseJSON\(\'', webpage, 'data', playlist_id,
                     transform_source=js_to_json)
             except ExtractorError as e:
                 retry.error = e
@@ -81,7 +81,7 @@ class AmazonStoreIE(InfoExtractor):
             'height': int_or_none(video.get('videoHeight')),
             'width': int_or_none(video.get('videoWidth')),
         } for video in (data_json.get('videos') or []) if video.get('isVideo') and video.get('url')]
-        return self.playlist_result(entries, playlist_id=id, playlist_title=data_json.get('title'))
+        return self.playlist_result(entries, playlist_id=playlist_id, playlist_title=data_json.get('title'))
 
 
 class AmazonReviewsIE(InfoExtractor):

yt_dlp/extractor/amazonminitv.py

@@ -25,7 +25,7 @@ class AmazonMiniTVBaseIE(InfoExtractor):
             asin, note=note, headers={
                 'Content-Type': 'application/json',
                 'currentpageurl': '/',
-                'currentplatform': 'dWeb'
+                'currentplatform': 'dWeb',
             }, data=json.dumps(data).encode() if data else None,
             query=None if data else {
                 'deviceType': 'A1WMMUXPCUJL4N',

yt_dlp/extractor/amcnetworks.py

@@ -64,8 +64,8 @@ class AMCNetworksIE(ThePlatformIE):  # XXX: Do not subclass from concrete IE
         site, display_id = self._match_valid_url(url).groups()
         requestor_id = self._REQUESTOR_ID_MAP[site]
         page_data = self._download_json(
-            'https://content-delivery-gw.svc.ds.amcn.com/api/v2/content/amcn/%s/url/%s'
-            % (requestor_id.lower(), display_id), display_id)['data']
+            f'https://content-delivery-gw.svc.ds.amcn.com/api/v2/content/amcn/{requestor_id.lower()}/url/{display_id}',
+            display_id)['data']
         properties = page_data.get('properties') or {}
         query = {
             'mbr': 'true',
@@ -76,15 +76,15 @@ class AMCNetworksIE(ThePlatformIE):  # XXX: Do not subclass from concrete IE
         try:
             for v in page_data['children']:
                 if v.get('type') == 'video-player':
-                    releasePid = v['properties']['currentVideo']['meta']['releasePid']
-                    tp_path = 'M_UwQC/' + releasePid
+                    release_pid = v['properties']['currentVideo']['meta']['releasePid']
+                    tp_path = 'M_UwQC/' + release_pid
                     media_url = 'https://link.theplatform.com/s/' + tp_path
                     video_player_count += 1
         except KeyError:
             pass
         if video_player_count > 1:
             self.report_warning(
-                'The JSON data has %d video players. Only one will be extracted' % video_player_count)
+                f'The JSON data has {video_player_count} video players. Only one will be extracted')
 
         # Fall back to videoPid if releasePid not found.
         # TODO: Fall back to videoPid if releasePid manifest uses DRM.
@@ -131,7 +131,7 @@ class AMCNetworksIE(ThePlatformIE):  # XXX: Do not subclass from concrete IE
         })
         ns_keys = theplatform_metadata.get('$xmlns', {}).keys()
         if ns_keys:
-            ns = list(ns_keys)[0]
+            ns = next(iter(ns_keys))
             episode = theplatform_metadata.get(ns + '$episodeTitle') or None
             episode_number = int_or_none(
                 theplatform_metadata.get(ns + '$episode'))

yt_dlp/extractor/americastestkitchen.py

@@ -87,13 +87,13 @@ class AmericasTestKitchenIE(InfoExtractor):
             resource_type = 'episodes'
 
         resource = self._download_json(
-            'https://www.americastestkitchen.com/api/v6/%s/%s' % (resource_type, video_id), video_id)
+            f'https://www.americastestkitchen.com/api/v6/{resource_type}/{video_id}', video_id)
         video = resource['video'] if is_episode else resource
         episode = resource if is_episode else resource.get('episode') or {}
 
         return {
             '_type': 'url_transparent',
-            'url': 'https://player.zype.com/embed/%s.js?api_key=jZ9GUhRmxcPvX7M3SlfejB6Hle9jyHTdk2jVxG7wOHPLODgncEKVdPYBhuz9iWXQ' % video['zypeId'],
+            'url': 'https://player.zype.com/embed/{}.js?api_key=jZ9GUhRmxcPvX7M3SlfejB6Hle9jyHTdk2jVxG7wOHPLODgncEKVdPYBhuz9iWXQ'.format(video['zypeId']),
             'ie_key': 'Zype',
             'description': clean_html(video.get('description')),
             'timestamp': unified_timestamp(video.get('publishDate')),
@@ -174,22 +174,22 @@ class AmericasTestKitchenSeasonIE(InfoExtractor):
         ]
 
         if season_number:
-            playlist_id = 'season_%d' % season_number
-            playlist_title = 'Season %d' % season_number
+            playlist_id = f'season_{season_number}'
+            playlist_title = f'Season {season_number}'
             facet_filters.append('search_season_list:' + playlist_title)
         else:
             playlist_id = show
             playlist_title = title
 
         season_search = self._download_json(
-            'https://y1fnzxui30-dsn.algolia.net/1/indexes/everest_search_%s_season_desc_production' % slug,
+            f'https://y1fnzxui30-dsn.algolia.net/1/indexes/everest_search_{slug}_season_desc_production',
             playlist_id, headers={
                 'Origin': 'https://www.americastestkitchen.com',
                 'X-Algolia-API-Key': '8d504d0099ed27c1b73708d22871d805',
                 'X-Algolia-Application-Id': 'Y1FNZXUI30',
             }, query={
                 'facetFilters': json.dumps(facet_filters),
-                'attributesToRetrieve': 'description,search_%s_episode_number,search_document_date,search_url,title,search_atk_episode_season' % slug,
+                'attributesToRetrieve': f'description,search_{slug}_episode_number,search_document_date,search_url,title,search_atk_episode_season',
                 'attributesToHighlight': '',
                 'hitsPerPage': 1000,
             })
@@ -207,7 +207,7 @@ class AmericasTestKitchenSeasonIE(InfoExtractor):
                     'description': episode.get('description'),
                     'timestamp': unified_timestamp(episode.get('search_document_date')),
                     'season_number': season_number,
-                    'episode_number': int_or_none(episode.get('search_%s_episode_number' % slug)),
+                    'episode_number': int_or_none(episode.get(f'search_{slug}_episode_number')),
                     'ie_key': AmericasTestKitchenIE.ie_key(),
                 }
 

yt_dlp/extractor/amp.py

@@ -19,12 +19,12 @@ class AMPIE(InfoExtractor):  # XXX: Conventionally, base classes should end with
             'Unable to download Akamai AMP feed', transform_source=strip_jsonp)
         item = feed.get('channel', {}).get('item')
         if not item:
-            raise ExtractorError('%s said: %s' % (self.IE_NAME, feed['error']))
+            raise ExtractorError('{} said: {}'.format(self.IE_NAME, feed['error']))
 
         video_id = item['guid']
 
         def get_media_node(name, default=None):
-            media_name = 'media-%s' % name
+            media_name = f'media-{name}'
             media_group = item.get('media-group') or item
             return media_group.get(media_name) or item.get(media_name) or item.get(name, default)
 

yt_dlp/extractor/anchorfm.py

@@ -29,7 +29,7 @@ class AnchorFMEpisodeIE(InfoExtractor):
             'release_date': '20230121',
             'release_timestamp': 1674285179,
             'episode_id': 'e1tpt3d',
-        }
+        },
     }, {
         # embed url
         'url': 'https://anchor.fm/apakatatempo/embed/episodes/S2E75-Perang-Bintang-di-Balik-Kasus-Ferdy-Sambo-dan-Ismail-Bolong-e1shjqd',
@@ -50,7 +50,7 @@ class AnchorFMEpisodeIE(InfoExtractor):
             'season': 'Season 2',
             'season_number': 2,
             'episode_id': 'e1shjqd',
-        }
+        },
     }]
 
     _WEBPAGE_TESTS = [{
@@ -72,7 +72,7 @@ class AnchorFMEpisodeIE(InfoExtractor):
             'thumbnail': 'https://s3-us-west-2.amazonaws.com/anchor-generated-image-bank/production/podcast_uploaded_episode400/2627805/2627805-1671590688729-4db3882ac9e4b.jpg',
             'uploader': 'Podcast Tempo',
             'channel': 'apakatatempo',
-        }
+        },
     }]
 
     def _real_extract(self, url):

yt_dlp/extractor/angel.py

@@ -15,8 +15,8 @@ class AngelIE(InfoExtractor):
             'title': 'Tuttle Twins Season 1, Episode 1: When Laws Give You Lemons',
             'description': 'md5:73b704897c20ab59c433a9c0a8202d5e',
             'thumbnail': r're:^https?://images.angelstudios.com/image/upload/angel-app/.*$',
-            'duration': 1359.0
-        }
+            'duration': 1359.0,
+        },
     }, {
         'url': 'https://www.angel.com/watch/the-chosen/episode/8dfb714d-bca5-4812-8125-24fb9514cd10/season-1/episode-1/i-have-called-you-by-name',
         'md5': 'e4774bad0a5f0ad2e90d175cafdb797d',
@@ -26,8 +26,8 @@ class AngelIE(InfoExtractor):
             'title': 'The Chosen Season 1, Episode 1: I Have Called You By Name',
             'description': 'md5:aadfb4827a94415de5ff6426e6dee3be',
             'thumbnail': r're:^https?://images.angelstudios.com/image/upload/angel-app/.*$',
-            'duration': 3276.0
-        }
+            'duration': 3276.0,
+        },
     }]
 
     def _real_extract(self, url):
@@ -44,7 +44,7 @@ class AngelIE(InfoExtractor):
             'title': self._og_search_title(webpage),
             'description': self._og_search_description(webpage),
             'formats': formats,
-            'subtitles': subtitles
+            'subtitles': subtitles,
         }
 
         # Angel uses cloudinary in the background and supports image transformations.

yt_dlp/extractor/antenna.py

@@ -105,7 +105,7 @@ class Ant1NewsGrArticleIE(AntennaBaseIE):
         info = self._search_json_ld(webpage, video_id, expected_type='NewsArticle')
         embed_urls = list(Ant1NewsGrEmbedIE._extract_embed_urls(url, webpage))
         if not embed_urls:
-            raise ExtractorError('no videos found for %s' % video_id, expected=True)
+            raise ExtractorError(f'no videos found for {video_id}', expected=True)
         return self.playlist_from_matches(
             embed_urls, video_id, info.get('title'), ie=Ant1NewsGrEmbedIE.ie_key(),
             video_kwargs={'url_transparent': True, 'timestamp': info.get('timestamp')})

yt_dlp/extractor/anvato.py

@@ -238,7 +238,7 @@ class AnvatoIE(InfoExtractor):
         'gray': 'anvato_mcp_gray_web_prod_4c10f067c393ed8fc453d3930f8ab2b159973900',
         'hearst': 'anvato_mcp_hearst_web_prod_5356c3de0fc7c90a3727b4863ca7fec3a4524a99',
         'cbs': 'anvato_mcp_cbs_web_prod_02f26581ff80e5bda7aad28226a8d369037f2cbe',
-        'telemundo': 'anvato_mcp_telemundo_web_prod_c5278d51ad46fda4b6ca3d0ea44a7846a054f582'
+        'telemundo': 'anvato_mcp_telemundo_web_prod_c5278d51ad46fda4b6ca3d0ea44a7846a054f582',
     }
 
     def _generate_nfl_token(self, anvack, mcp_id):
@@ -255,7 +255,7 @@ class AnvatoIE(InfoExtractor):
       token
     }
   }
-}''' % (anvack, mcp_id),
+}''' % (anvack, mcp_id),  # noqa: UP031
             }).encode(), headers={
                 'Authorization': auth_token,
                 'Content-Type': 'application/json',
@@ -299,7 +299,7 @@ class AnvatoIE(InfoExtractor):
 
         return self._download_json(
             video_data_url, video_id, transform_source=strip_jsonp, query=query,
-            data=json.dumps({'api': api}, separators=(',', ':')).encode('utf-8'))
+            data=json.dumps({'api': api}, separators=(',', ':')).encode())
 
     def _get_anvato_videos(self, access_key, video_id, token):
         video_data = self._get_video_json(access_key, video_id, token)
@@ -358,7 +358,7 @@ class AnvatoIE(InfoExtractor):
         for caption in video_data.get('captions', []):
             a_caption = {
                 'url': caption['url'],
-                'ext': 'tt' if caption.get('format') == 'SMPTE-TT' else None
+                'ext': 'tt' if caption.get('format') == 'SMPTE-TT' else None,
             }
             subtitles.setdefault(caption['language'], []).append(a_caption)
         subtitles = self._merge_subtitles(subtitles, hls_subs, vtt_subs)

yt_dlp/extractor/aol.py

@@ -30,7 +30,7 @@ class AolIE(YahooIE):  # XXX: Do not subclass from concrete IE
         'params': {
             # m3u8 download
             'skip_download': True,
-        }
+        },
     }, {
         # video with vidible ID
         'url': 'https://www.aol.com/video/view/netflix-is-raising-rates/5707d6b8e4b090497b04f706/',
@@ -46,7 +46,7 @@ class AolIE(YahooIE):  # XXX: Do not subclass from concrete IE
         'params': {
             # m3u8 download
             'skip_download': True,
-        }
+        },
     }, {
         'url': 'https://www.aol.com/video/view/park-bench-season-2-trailer/559a1b9be4b0c3bfad3357a7/',
         'only_matching': True,
@@ -83,10 +83,10 @@ class AolIE(YahooIE):  # XXX: Do not subclass from concrete IE
             return self._extract_yahoo_video(video_id, 'us')
 
         response = self._download_json(
-            'https://feedapi.b2c.on.aol.com/v1.0/app/videos/aolon/%s/details' % video_id,
+            f'https://feedapi.b2c.on.aol.com/v1.0/app/videos/aolon/{video_id}/details',
             video_id)['response']
         if response['statusText'] != 'Ok':
-            raise ExtractorError('%s said: %s' % (self.IE_NAME, response['statusText']), expected=True)
+            raise ExtractorError('{} said: {}'.format(self.IE_NAME, response['statusText']), expected=True)
 
         video_data = response['data']
         formats = []

yt_dlp/extractor/apa.py

@@ -34,7 +34,7 @@ class APAIE(InfoExtractor):
         video_id, base_url = mobj.group('id', 'base_url')
 
         webpage = self._download_webpage(
-            '%s/player/%s' % (base_url, video_id), video_id)
+            f'{base_url}/player/{video_id}', video_id)
 
         jwplatform_id = self._search_regex(
             r'media[iI]d\s*:\s*["\'](?P<id>[a-zA-Z0-9]{8})', webpage,
@@ -47,7 +47,7 @@ class APAIE(InfoExtractor):
 
         def extract(field, name=None):
             return self._search_regex(
-                r'\b%s["\']\s*:\s*(["\'])(?P<value>(?:(?!\1).)+)\1' % field,
+                rf'\b{field}["\']\s*:\s*(["\'])(?P<value>(?:(?!\1).)+)\1',
                 webpage, name or field, default=None, group='value')
 
         title = extract('title') or video_id

yt_dlp/extractor/applepodcasts.py

@@ -24,7 +24,7 @@ class ApplePodcastsIE(InfoExtractor):
             'duration': 6454,
             'series': 'The Tim Dillon Show',
             'thumbnail': 're:.+[.](png|jpe?g|webp)',
-        }
+        },
     }, {
         'url': 'https://podcasts.apple.com/podcast/207-whitney-webb-returns/id1135137367?i=1000482637777',
         'only_matching': True,

yt_dlp/extractor/appletrailers.py

@@ -1,8 +1,8 @@
 import json
 import re
+import urllib.parse
 
 from .common import InfoExtractor
-from ..compat import compat_urlparse
 from ..utils import (
     int_or_none,
     parse_duration,
@@ -64,7 +64,7 @@ class AppleTrailersIE(InfoExtractor):
                     'uploader_id': 'wb',
                 },
             },
-        ]
+        ],
     }, {
         'url': 'http://trailers.apple.com/trailers/magnolia/blackthorn/',
         'info_dict': {
@@ -99,7 +99,7 @@ class AppleTrailersIE(InfoExtractor):
         webpage = self._download_webpage(url, movie)
         film_id = self._search_regex(r"FilmId\s*=\s*'(\d+)'", webpage, 'film id')
         film_data = self._download_json(
-            'http://trailers.apple.com/trailers/feeds/data/%s.json' % film_id,
+            f'http://trailers.apple.com/trailers/feeds/data/{film_id}.json',
             film_id, fatal=False)
 
         if film_data:
@@ -114,7 +114,7 @@ class AppleTrailersIE(InfoExtractor):
                         if not src:
                             continue
                         formats.append({
-                            'format_id': '%s-%s' % (version, size),
+                            'format_id': f'{version}-{size}',
                             'url': re.sub(r'_(\d+p\.mov)', r'_h\1', src),
                             'width': int_or_none(size_data.get('width')),
                             'height': int_or_none(size_data.get('height')),
@@ -134,7 +134,7 @@ class AppleTrailersIE(InfoExtractor):
             page_data = film_data.get('page', {})
             return self.playlist_result(entries, film_id, page_data.get('movie_title'))
 
-        playlist_url = compat_urlparse.urljoin(url, 'includes/playlists/itunes.inc')
+        playlist_url = urllib.parse.urljoin(url, 'includes/playlists/itunes.inc')
 
         def fix_html(s):
             s = re.sub(r'(?s)<script[^<]*?>.*?</script>', '', s)
@@ -143,10 +143,9 @@ class AppleTrailersIE(InfoExtractor):
             # like: http://trailers.apple.com/trailers/wb/gravity/
 
             def _clean_json(m):
-                return 'iTunes.playURL(%s);' % m.group(1).replace('\'', '&#39;')
+                return 'iTunes.playURL({});'.format(m.group(1).replace('\'', '&#39;'))
             s = re.sub(self._JSON_RE, _clean_json, s)
-            s = '<html>%s</html>' % s
-            return s
+            return f'<html>{s}</html>'
         doc = self._download_xml(playlist_url, movie, transform_source=fix_html)
 
         playlist = []
@@ -170,18 +169,18 @@ class AppleTrailersIE(InfoExtractor):
                 duration = 60 * int(m.group('minutes')) + int(m.group('seconds'))
 
             trailer_id = first_url.split('/')[-1].rpartition('_')[0].lower()
-            settings_json_url = compat_urlparse.urljoin(url, 'includes/settings/%s.json' % trailer_id)
+            settings_json_url = urllib.parse.urljoin(url, f'includes/settings/{trailer_id}.json')
             settings = self._download_json(settings_json_url, trailer_id, 'Downloading settings json')
 
             formats = []
-            for format in settings['metadata']['sizes']:
+            for fmt in settings['metadata']['sizes']:
                 # The src is a file pointing to the real video file
-                format_url = re.sub(r'_(\d*p\.mov)', r'_h\1', format['src'])
+                format_url = re.sub(r'_(\d*p\.mov)', r'_h\1', fmt['src'])
                 formats.append({
                     'url': format_url,
-                    'format': format['type'],
-                    'width': int_or_none(format['width']),
-                    'height': int_or_none(format['height']),
+                    'format': fmt['type'],
+                    'width': int_or_none(fmt['width']),
+                    'height': int_or_none(fmt['height']),
                 })
 
             playlist.append({
@@ -229,7 +228,7 @@ class AppleTrailersSectionIE(InfoExtractor):
             'title': 'Movie Studios',
         },
     }
-    _VALID_URL = r'https?://(?:www\.)?trailers\.apple\.com/#section=(?P<id>%s)' % '|'.join(_SECTIONS)
+    _VALID_URL = r'https?://(?:www\.)?trailers\.apple\.com/#section=(?P<id>{})'.format('|'.join(_SECTIONS))
     _TESTS = [{
         'url': 'http://trailers.apple.com/#section=justadded',
         'info_dict': {
@@ -270,7 +269,7 @@ class AppleTrailersSectionIE(InfoExtractor):
     def _real_extract(self, url):
         section = self._match_id(url)
         section_data = self._download_json(
-            'http://trailers.apple.com/trailers/home/feeds/%s.json' % self._SECTIONS[section]['feed_path'],
+            'http://trailers.apple.com/trailers/home/feeds/{}.json'.format(self._SECTIONS[section]['feed_path']),
             section)
         entries = [
             self.url_result('http://trailers.apple.com' + e['location'])

yt_dlp/extractor/archiveorg.py

@@ -1,10 +1,11 @@
+from __future__ import annotations
+
 import json
 import re
 import urllib.parse
 
 from .common import InfoExtractor
 from .youtube import YoutubeBaseInfoExtractor, YoutubeIE
-from ..compat import compat_urllib_parse_unquote
 from ..networking import HEADRequest
 from ..networking.exceptions import HTTPError
 from ..utils import (
@@ -145,7 +146,7 @@ class ArchiveOrgIE(InfoExtractor):
             'title': 'Bells Of Rostov',
             'ext': 'mp3',
         },
-        'skip': 'restricted'
+        'skip': 'restricted',
     }, {
         'url': 'https://archive.org/details/lp_the-music-of-russia_various-artists-a-askaryan-alexander-melik/disc1/02.02.+Song+And+Chorus+In+The+Polovetsian+Camp+From+%22Prince+Igor%22+(Act+2%2C+Scene+1).mp3',
         'md5': '1d0aabe03edca83ca58d9ed3b493a3c3',
@@ -158,7 +159,7 @@ class ArchiveOrgIE(InfoExtractor):
             'description': 'md5:012b2d668ae753be36896f343d12a236',
             'upload_date': '20190928',
         },
-        'skip': 'restricted'
+        'skip': 'restricted',
     }, {
         # Original formats are private
         'url': 'https://archive.org/details/irelandthemakingofarepublic',
@@ -202,8 +203,8 @@ class ArchiveOrgIE(InfoExtractor):
                     'thumbnail': 'https://archive.org/download/irelandthemakingofarepublic/irelandthemakingofarepublic.thumbs/irelandthemakingofarepublicreel2_001554.jpg',
                     'display_id': 'irelandthemakingofarepublicreel2.mov',
                 },
-            }
-        ]
+            },
+        ],
     }]
 
     @staticmethod
@@ -220,7 +221,7 @@ class ArchiveOrgIE(InfoExtractor):
 
     def _real_extract(self, url):
         video_id = urllib.parse.unquote_plus(self._match_id(url))
-        identifier, entry_id = (video_id.split('/', 1) + [None])[:2]
+        identifier, _, entry_id = video_id.partition('/')
 
         # Archive.org metadata API doesn't clearly demarcate playlist entries
         # or subtitle tracks, so we get them from the embeddable player.
@@ -246,7 +247,7 @@ class ArchiveOrgIE(InfoExtractor):
                 if track['kind'] != 'subtitles':
                     continue
                 entries[p['orig']][track['label']] = {
-                    'url': 'https://archive.org/' + track['file'].lstrip('/')
+                    'url': 'https://archive.org/' + track['file'].lstrip('/'),
                 }
 
         metadata = self._download_json('http://archive.org/metadata/' + identifier, identifier)
@@ -293,7 +294,9 @@ class ArchiveOrgIE(InfoExtractor):
                     'height': int_or_none(f.get('width')),
                     'filesize': int_or_none(f.get('size'))})
 
-            extension = (f['name'].rsplit('.', 1) + [None])[1]
+            _, has_ext, extension = f['name'].rpartition('.')
+            if not has_ext:
+                extension = None
 
             # We don't want to skip private formats if the user has access to them,
             # however without access to an account with such privileges we can't implement/test this.
@@ -308,7 +311,7 @@ class ArchiveOrgIE(InfoExtractor):
                     'filesize': int_or_none(f.get('size')),
                     'protocol': 'https',
                     'source_preference': 0 if f.get('source') == 'original' else -1,
-                    'format_note': f.get('source')
+                    'format_note': f.get('source'),
                 })
 
         for entry in entries.values():
@@ -371,7 +374,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader_url': 'https://www.youtube.com/user/Zeurel',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'channel_url': 'https://www.youtube.com/channel/UCukCyHaD-bK3in_pKpfH9Eg',
-            }
+            },
         }, {
             # Internal link
             'url': 'https://web.archive.org/web/2oe/http://wayback-fakeurl.archive.org/yt/97t7Xj_iBv0',
@@ -388,7 +391,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader_url': 'https://www.youtube.com/user/1veritasium',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'channel_url': 'https://www.youtube.com/channel/UCHnyfMqiRRG1u-2MsSQLbXA',
-            }
+            },
         }, {
             # Video from 2012, webm format itag 45. Newest capture is deleted video, with an invalid description.
             # Should use the date in the link. Title ends with '- Youtube'. Capture has description in eow-description
@@ -403,8 +406,8 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader_id': 'machinima',
                 'uploader_url': 'https://www.youtube.com/user/machinima',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
-                'uploader': 'machinima'
-            }
+                'uploader': 'machinima',
+            },
         }, {
             # FLV video. Video file URL does not provide itag information
             'url': 'https://web.archive.org/web/20081211103536/http://www.youtube.com/watch?v=jNQXAC9IVRw',
@@ -421,7 +424,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'channel_url': 'https://www.youtube.com/channel/UC4QobU6STFB0P71PMvOGN5A',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'uploader': 'jawed',
-            }
+            },
         }, {
             'url': 'https://web.archive.org/web/20110712231407/http://www.youtube.com/watch?v=lTx3G6h2xyA',
             'info_dict': {
@@ -437,7 +440,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader_url': 'https://www.youtube.com/user/itsmadeon',
                 'channel_url': 'https://www.youtube.com/channel/UCqMDNf3Pn5L7pcNkuSEeO3w',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
-            }
+            },
         }, {
             # First capture is of dead video, second is the oldest from CDX response.
             'url': 'https://web.archive.org/https://www.youtube.com/watch?v=1JYutPM8O6E',
@@ -454,7 +457,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'channel_url': 'https://www.youtube.com/channel/UCdIaNUarhzLSXGoItz7BHVA',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'uploader': 'ETC News',
-            }
+            },
         }, {
             # First capture of dead video, capture date in link links to dead capture.
             'url': 'https://web.archive.org/web/20180803221945/https://www.youtube.com/watch?v=6FPhZJGvf4E',
@@ -473,15 +476,15 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader': 'ETC News',
             },
             'expected_warnings': [
-                r'unable to download capture webpage \(it may not be archived\)'
-            ]
+                r'unable to download capture webpage \(it may not be archived\)',
+            ],
         }, {   # Very old YouTube page, has - YouTube in title.
             'url': 'http://web.archive.org/web/20070302011044/http://youtube.com/watch?v=-06-KB9XTzg',
             'info_dict': {
                 'id': '-06-KB9XTzg',
                 'ext': 'flv',
-                'title': 'New Coin Hack!! 100% Safe!!'
-            }
+                'title': 'New Coin Hack!! 100% Safe!!',
+            },
         }, {
             'url': 'web.archive.org/https://www.youtube.com/watch?v=dWW7qP423y8',
             'info_dict': {
@@ -495,7 +498,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'description': 'md5:7b567f898d8237b256f36c1a07d6d7bc',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'uploader': 'DankPods',
-            }
+            },
         }, {
             # player response contains '};' See: https://github.com/ytdl-org/youtube-dl/issues/27093
             'url': 'https://web.archive.org/web/20200827003909if_/http://www.youtube.com/watch?v=6Dh-RL__uN4',
@@ -512,7 +515,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader_id': 'PewDiePie',
                 'uploader_url': 'https://www.youtube.com/user/PewDiePie',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
-            }
+            },
         }, {
             # ~June 2010 Capture. swfconfig
             'url': 'https://web.archive.org/web/0/https://www.youtube.com/watch?v=8XeW5ilk-9Y',
@@ -527,7 +530,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'uploader_url': 'https://www.youtube.com/user/HowTheWorldWorks',
                 'upload_date': '20090520',
-            }
+            },
         }, {
             # Jan 2011: watch-video-date/eow-date surrounded by whitespace
             'url': 'https://web.archive.org/web/20110126141719/http://www.youtube.com/watch?v=Q_yjX80U7Yc',
@@ -542,7 +545,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'duration': 132,
                 'uploader_url': 'https://www.youtube.com/user/claybutlermusic',
-            }
+            },
         }, {
             # ~May 2009 swfArgs. ytcfg is spread out over various vars
             'url': 'https://web.archive.org/web/0/https://www.youtube.com/watch?v=c5uJgG05xUY',
@@ -557,7 +560,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'description': 'md5:4ca77d79538064e41e4cc464e93f44f0',
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'duration': 754,
-            }
+            },
         }, {
             # ~June 2012. Upload date is in another lang so cannot extract.
             'url': 'https://web.archive.org/web/20120607174520/http://www.youtube.com/watch?v=xWTLLl-dQaA',
@@ -571,7 +574,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'uploader': 'BlackNerdComedy',
                 'duration': 182,
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
-            }
+            },
         }, {
             # ~July 2013
             'url': 'https://web.archive.org/web/*/https://www.youtube.com/watch?v=9eO1aasHyTM',
@@ -587,7 +590,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'channel_url': 'https://www.youtube.com/channel/UC62R2cBezNBOqxSerfb1nMQ',
                 'upload_date': '20060428',
                 'uploader': 'punkybird',
-            }
+            },
         }, {
             # April 2020: Player response in player config
             'url': 'https://web.archive.org/web/20200416034815/https://www.youtube.com/watch?v=Cf7vS8jc7dY&gl=US&hl=en',
@@ -604,7 +607,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'description': 'md5:c625bb3c02c4f5fb4205971e468fa341',
                 'uploader_url': 'https://www.youtube.com/user/GameGrumps',
-            }
+            },
         }, {
             # watch7-user-header with yt-user-info
             'url': 'ytarchive:kbh4T_b4Ixw:20160307085057',
@@ -619,7 +622,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'thumbnail': r're:https?://.*\.(jpg|webp)',
                 'upload_date': '20150503',
                 'channel_id': 'UCnTaGvsHmMy792DWeT6HbGA',
-            }
+            },
         }, {
             # April 2012
             'url': 'https://web.archive.org/web/0/https://www.youtube.com/watch?v=SOm7mPoPskU',
@@ -634,35 +637,35 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'duration': 200,
                 'upload_date': '20120407',
                 'uploader_id': 'thecomputernerd01',
-            }
+            },
         }, {
             'url': 'https://web.archive.org/web/http://www.youtube.com/watch?v=kH-G_aIBlFw',
-            'only_matching': True
+            'only_matching': True,
         }, {
             'url': 'https://web.archive.org/web/20050214000000_if/http://www.youtube.com/watch?v=0altSZ96U4M',
-            'only_matching': True
+            'only_matching': True,
         }, {
             # Video not archived, only capture is unavailable video page
             'url': 'https://web.archive.org/web/20210530071008/https://www.youtube.com/watch?v=lHJTf93HL1s&spfreload=10',
-            'only_matching': True
+            'only_matching': True,
         }, {   # Encoded url
             'url': 'https://web.archive.org/web/20120712231619/http%3A//www.youtube.com/watch%3Fgl%3DUS%26v%3DAkhihxRKcrs%26hl%3Den',
-            'only_matching': True
+            'only_matching': True,
         }, {
             'url': 'https://web.archive.org/web/20120712231619/http%3A//www.youtube.com/watch%3Fv%3DAkhihxRKcrs%26gl%3DUS%26hl%3Den',
-            'only_matching': True
+            'only_matching': True,
         }, {
             'url': 'https://web.archive.org/web/20060527081937/http://www.youtube.com:80/watch.php?v=ELTFsLT73fA&search=soccer',
-            'only_matching': True
+            'only_matching': True,
         }, {
             'url': 'https://web.archive.org/http://www.youtube.com:80/watch?v=-05VVye-ffg',
-            'only_matching': True
+            'only_matching': True,
         }, {
             'url': 'ytarchive:BaW_jenozKc:20050214000000',
-            'only_matching': True
+            'only_matching': True,
         }, {
             'url': 'ytarchive:BaW_jenozKc',
-            'only_matching': True
+            'only_matching': True,
         },
     ]
     _YT_INITIAL_DATA_RE = YoutubeBaseInfoExtractor._YT_INITIAL_DATA_RE
@@ -673,13 +676,13 @@ class YoutubeWebArchiveIE(InfoExtractor):
 
     _YT_DEFAULT_THUMB_SERVERS = ['i.ytimg.com']  # thumbnails most likely archived on these servers
     _YT_ALL_THUMB_SERVERS = orderedSet(
-        _YT_DEFAULT_THUMB_SERVERS + ['img.youtube.com', *[f'{c}{n or ""}.ytimg.com' for c in ('i', 's') for n in (*range(0, 5), 9)]])
+        [*_YT_DEFAULT_THUMB_SERVERS, 'img.youtube.com', *[f'{c}{n or ""}.ytimg.com' for c in ('i', 's') for n in (*range(5), 9)]])
 
     _WAYBACK_BASE_URL = 'https://web.archive.org/web/%sif_/'
     _OLDEST_CAPTURE_DATE = 20050214000000
     _NEWEST_CAPTURE_DATE = 20500101000000
 
-    def _call_cdx_api(self, item_id, url, filters: list = None, collapse: list = None, query: dict = None, note=None, fatal=False):
+    def _call_cdx_api(self, item_id, url, filters: list | None = None, collapse: list | None = None, query: dict | None = None, note=None, fatal=False):
         # CDX docs: https://github.com/internetarchive/wayback/blob/master/wayback-cdx-server/README.md
         query = {
             'url': url,
@@ -688,14 +691,14 @@ class YoutubeWebArchiveIE(InfoExtractor):
             'limit': 500,
             'filter': ['statuscode:200'] + (filters or []),
             'collapse': collapse or [],
-            **(query or {})
+            **(query or {}),
         }
         res = self._download_json(
             'https://web.archive.org/cdx/search/cdx', item_id,
             note or 'Downloading CDX API JSON', query=query, fatal=fatal)
         if isinstance(res, list) and len(res) >= 2:
             # format response to make it easier to use
-            return list(dict(zip(res[0], v)) for v in res[1:])
+            return [dict(zip(res[0], v)) for v in res[1:]]
         elif not isinstance(res, list) or len(res) != 0:
             self.report_warning('Error while parsing CDX API response' + bug_reports_message())
 
@@ -852,7 +855,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 {
                     'url': (self._WAYBACK_BASE_URL % (int_or_none(thumbnail_dict.get('timestamp')) or self._OLDEST_CAPTURE_DATE)) + thumbnail_dict.get('original'),
                     'filesize': int_or_none(thumbnail_dict.get('length')),
-                    'preference': int_or_none(thumbnail_dict.get('length'))
+                    'preference': int_or_none(thumbnail_dict.get('length')),
                 } for thumbnail_dict in response)
             if not try_all:
                 break
@@ -893,7 +896,7 @@ class YoutubeWebArchiveIE(InfoExtractor):
         for retry in retry_manager:
             try:
                 urlh = self._request_webpage(
-                    HEADRequest('https://web.archive.org/web/2oe_/http://wayback-fakeurl.archive.org/yt/%s' % video_id),
+                    HEADRequest(f'https://web.archive.org/web/2oe_/http://wayback-fakeurl.archive.org/yt/{video_id}'),
                     video_id, note='Fetching archived video file url', expected_status=True)
             except ExtractorError as e:
                 # HTTP Error 404 is expected if the video is not saved.
@@ -924,21 +927,21 @@ class YoutubeWebArchiveIE(InfoExtractor):
         info['thumbnails'] = self._extract_thumbnails(video_id)
 
         if urlh:
-            url = compat_urllib_parse_unquote(urlh.url)
+            url = urllib.parse.unquote(urlh.url)
             video_file_url_qs = parse_qs(url)
             # Attempt to recover any ext & format info from playback url & response headers
-            format = {'url': url, 'filesize': int_or_none(urlh.headers.get('x-archive-orig-content-length'))}
+            fmt = {'url': url, 'filesize': int_or_none(urlh.headers.get('x-archive-orig-content-length'))}
             itag = try_get(video_file_url_qs, lambda x: x['itag'][0])
             if itag and itag in YoutubeIE._formats:
-                format.update(YoutubeIE._formats[itag])
-                format.update({'format_id': itag})
+                fmt.update(YoutubeIE._formats[itag])
+                fmt.update({'format_id': itag})
             else:
                 mime = try_get(video_file_url_qs, lambda x: x['mime'][0])
                 ext = (mimetype2ext(mime)
                        or urlhandle_detect_ext(urlh)
                        or mimetype2ext(urlh.headers.get('x-archive-guessed-content-type')))
-                format.update({'ext': ext})
-            info['formats'] = [format]
+                fmt.update({'ext': ext})
+            info['formats'] = [fmt]
             if not info.get('duration'):
                 info['duration'] = str_to_int(try_get(video_file_url_qs, lambda x: x['dur'][0]))
 

yt_dlp/extractor/arcpublishing.py

@@ -11,7 +11,7 @@ from ..utils import (
 
 class ArcPublishingIE(InfoExtractor):
     _UUID_REGEX = r'[\da-f]{8}-(?:[\da-f]{4}-){3}[\da-f]{12}'
-    _VALID_URL = r'arcpublishing:(?P<org>[a-z]+):(?P<id>%s)' % _UUID_REGEX
+    _VALID_URL = rf'arcpublishing:(?P<org>[a-z]+):(?P<id>{_UUID_REGEX})'
     _TESTS = [{
         # https://www.adn.com/politics/2020/11/02/video-senate-candidates-campaign-in-anchorage-on-eve-of-election-day/
         'url': 'arcpublishing:adn:8c99cb6e-b29c-4bc9-9173-7bf9979225ab',
@@ -74,12 +74,12 @@ class ArcPublishingIE(InfoExtractor):
     def _extract_embed_urls(cls, url, webpage):
         entries = []
         # https://arcpublishing.atlassian.net/wiki/spaces/POWA/overview
-        for powa_el in re.findall(r'(<div[^>]+class="[^"]*\bpowa\b[^"]*"[^>]+data-uuid="%s"[^>]*>)' % ArcPublishingIE._UUID_REGEX, webpage):
+        for powa_el in re.findall(rf'(<div[^>]+class="[^"]*\bpowa\b[^"]*"[^>]+data-uuid="{ArcPublishingIE._UUID_REGEX}"[^>]*>)', webpage):
             powa = extract_attributes(powa_el) or {}
             org = powa.get('data-org')
             uuid = powa.get('data-uuid')
             if org and uuid:
-                entries.append('arcpublishing:%s:%s' % (org, uuid))
+                entries.append(f'arcpublishing:{org}:{uuid}')
         return entries
 
     def _real_extract(self, url):
@@ -122,7 +122,7 @@ class ArcPublishingIE(InfoExtractor):
             elif stream_type in ('ts', 'hls'):
                 m3u8_formats = self._extract_m3u8_formats(
                     s_url, uuid, 'mp4', live=is_live, m3u8_id='hls', fatal=False)
-                if all([f.get('acodec') == 'none' for f in m3u8_formats]):
+                if all(f.get('acodec') == 'none' for f in m3u8_formats):
                     continue
                 for f in m3u8_formats:
                     height = f.get('height')
@@ -136,7 +136,7 @@ class ArcPublishingIE(InfoExtractor):
             else:
                 vbr = int_or_none(s.get('bitrate'))
                 formats.append({
-                    'format_id': '%s-%d' % (stream_type, vbr) if vbr else stream_type,
+                    'format_id': f'{stream_type}-{vbr}' if vbr else stream_type,
                     'vbr': vbr,
                     'width': int_or_none(s.get('width')),
                     'height': int_or_none(s.get('height')),

yt_dlp/extractor/ard.py

@@ -85,7 +85,7 @@ class ARDMediathekBaseIE(InfoExtractor):
                         formats.extend(self._extract_f4m_formats(
                             update_url_query(stream_url, {
                                 'hdcore': '3.1.1',
-                                'plugin': 'aasp-3.1.1.69.124'
+                                'plugin': 'aasp-3.1.1.69.124',
                             }), video_id, f4m_id='hds', fatal=False))
                     elif ext == 'm3u8':
                         formats.extend(self._extract_m3u8_formats(
@@ -96,12 +96,12 @@ class ARDMediathekBaseIE(InfoExtractor):
                             f = {
                                 'url': server,
                                 'play_path': stream_url,
-                                'format_id': 'a%s-rtmp-%s' % (num, quality),
+                                'format_id': f'a{num}-rtmp-{quality}',
                             }
                         else:
                             f = {
                                 'url': stream_url,
-                                'format_id': 'a%s-%s-%s' % (num, ext, quality)
+                                'format_id': f'a{num}-{ext}-{quality}',
                             }
                         m = re.search(
                             r'_(?P<width>\d+)x(?P<height>\d+)\.mp4$',