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gh-109653: Improve enum import time by avoiding import of functools (GH-109789)

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Alex Waygood 2023-09-23 19:31:17 +01:00 • committed by GitHub
parent e8be0c9c5a
commit 51863b7d6e
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2 changed files with 3 additions and 3 deletions
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5
Lib/enum.py
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@ -1,8 +1,6 @@
import sys import sys
import builtins as bltns import builtins as bltns
from types import MappingProxyType, DynamicClassAttribute from types import MappingProxyType, DynamicClassAttribute
from operator import or_ as _or_
from functools import reduce
__all__ = [ __all__ = [
@ -1884,7 +1882,8 @@ def __call__(self, enumeration):
missed = [v for v in values if v not in member_values] missed = [v for v in values if v not in member_values]
if missed: if missed:
missing_names.append(name) missing_names.append(name)
missing_value |= reduce(_or_, missed) for val in missed:
missing_value |= val
if missing_names: if missing_names:
if len(missing_names) == 1: if len(missing_names) == 1:
alias = 'alias %s is missing' % missing_names[0] alias = 'alias %s is missing' % missing_names[0]

1
Misc/NEWS.d/next/Library/2023-09-23-12-47-45.gh-issue-109653.9wZBfs.rst Normal file
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@ -0,0 +1 @@
Reduce the import time of :mod:`enum` by over 50%. Patch by Alex Waygood.