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[core] Fix format selection parse error for CPython 3.12 (#8797)

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Authored by: Grub4K
This commit is contained in:
Simon Sawicki 2023-12-24 22:09:01 +01:00 committed by GitHub
parent 116c268438
commit 00cdda4f6f
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2 changed files with 11 additions and 2 deletions
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2
test/test_YoutubeDL.py
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@ -140,6 +140,8 @@ class TestFormatSelection(unittest.TestCase):
test('example-with-dashes', 'example-with-dashes')
test('all', '2', '47', '45', 'example-with-dashes', '35')
test('mergeall', '2+47+45+example-with-dashes+35', multi=True)
# See: https://github.com/yt-dlp/yt-dlp/pulls/8797
test('7_a/worst', '35')
def test_format_selection_audio(self):
formats = [

11
yt_dlp/YoutubeDL.py
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@ -2465,9 +2465,16 @@ class YoutubeDL:
return selector_function(ctx_copy)
return final_selector
stream = io.BytesIO(format_spec.encode())
# HACK: Python 3.12 changed the underlying parser, rendering '7_a' invalid
# Prefix numbers with random letters to avoid it being classified as a number
# See: https://github.com/yt-dlp/yt-dlp/pulls/8797
# TODO: Implement parser not reliant on tokenize.tokenize
prefix = ''.join(random.choices(string.ascii_letters, k=32))
stream = io.BytesIO(re.sub(r'\d[_\d]*', rf'{prefix}\g<0>', format_spec).encode())
try:
tokens = list(_remove_unused_ops(tokenize.tokenize(stream.readline)))
tokens = list(_remove_unused_ops(
token._replace(string=token.string.replace(prefix, ''))
for token in tokenize.tokenize(stream.readline)))
except tokenize.TokenError:
raise syntax_error('Missing closing/opening brackets or parenthesis', (0, len(format_spec)))