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bpo-40398: Fix typing.get_args() for special generic aliases. (GH-19720)

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Serhiy Storchaka 2020-04-27 10:27:21 +03:00 • committed by GitHub
parent caf1aadf3d
commit 6292be7adf
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3 changed files with 12 additions and 3 deletions
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4
Lib/typing.py
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@ -1420,11 +1420,13 @@ def get_args(tp):
"""
if isinstance(tp, _AnnotatedAlias):
return (tp.__origin__,) + tp.__metadata__
if isinstance(tp, (_GenericAlias, GenericAlias)):
if isinstance(tp, _GenericAlias) and not tp._special:
res = tp.__args__
if tp.__origin__ is collections.abc.Callable and res[0] is not Ellipsis:
res = (list(res[:-1]), res[-1])
return res
if isinstance(tp, GenericAlias):
return tp.__args__
return ()