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⚡️ Speed up function parse_req_python_version by 8% in src/black/files.py #48

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⚡️ Speed up function parse_req_python_version by 8% in src/black/files.py #48

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11 changes: 6 additions & 5 deletions src/black/files.py
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Original file line number Diff line number Diff line change
Expand Up @@ -167,13 +167,14 @@ def parse_req_python_version(requires_python: str) -> Optional[list[TargetVersio
If the parsed version cannot be mapped to a valid TargetVersion, returns None.
"""
version = Version(requires_python)
if version.release[0] != 3:
return None
try:
return [TargetVersion(version.release[1])]
except (IndexError, ValueError):
if version.major != 3 or len(version.release) < 2:
return None

minor_version = version.release[1]
if 3 <= minor_version <= 13:
return [TargetVersion(minor_version)]
return None


def parse_req_python_specifier(requires_python: str) -> Optional[list[TargetVersion]]:
"""Parse a specifier string (i.e. ``">=3.7,<3.10"``) to a list of TargetVersion.
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