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gh-74690: Further optimise typing._ProtocolMeta.__instancecheck__ (#103280)

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Alex Waygood 2023-04-05 17:37:36 +01:00 • committed by GitHub
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commit de18267685
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Lib/typing.py
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@ -2039,7 +2039,7 @@ def __instancecheck__(cls, instance):
val = getattr_static(instance, attr)
except AttributeError:
break
if callable(getattr(cls, attr, None)) and val is None:
if val is None and callable(getattr(cls, attr, None)):
break
else:
return True