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ast.parse: check feature_version common case first (GH-94640)

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Anthony Sottile 2022-08-29 10:05:24 -04:00 committed by GitHub
parent 026ab6f4e5
commit 9c2b9348e2
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1 changed files with 3 additions and 3 deletions
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6
Lib/ast.py
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@ -40,13 +40,13 @@ def parse(source, filename='<unknown>', mode='exec', *,
flags = PyCF_ONLY_AST
if type_comments:
flags |= PyCF_TYPE_COMMENTS
if isinstance(feature_version, tuple):
if feature_version is None:
feature_version = -1
elif isinstance(feature_version, tuple):
major, minor = feature_version # Should be a 2-tuple.
if major != 3:
raise ValueError(f"Unsupported major version: {major}")
feature_version = minor
elif feature_version is None:
feature_version = -1
# Else it should be an int giving the minor version for 3.x.
return compile(source, filename, mode, flags,
_feature_version=feature_version)