[3.8] bpo-40398: Fix typing.get_args() for special generic aliases. (GH-19720) by serhiy-storchaka · Pull Request #19857 · python/cpython · GitHub
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[3.8] bpo-40398: Fix typing.get_args() for special generic aliases. (GH-19720) #19857

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Merged
serhiy-storchaka merged 1 commit into from
May 2, 2020
Merged

[3.8] bpo-40398: Fix typing.get_args() for special generic aliases. (GH-19720) #19857

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9 changes: 8 additions & 1 deletion Lib/test/test_typing.py
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2 changes: 1 addition & 1 deletion Lib/typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1300,7 +1300,7 @@ def get_args(tp):
get_args(Union[int, Tuple[T, int]][str]) == (int, Tuple[str, int])
get_args(Callable[[], T][int]) == ([], int)
"""
if isinstance(tp, _GenericAlias):
if isinstance(tp, _GenericAlias) and not tp._special:
res = tp.__args__
if get_origin(tp) is collections.abc.Callable and res[0] is not Ellipsis:
res = (list(res[:-1]), res[-1])
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2020-04-26-22-25-36.bpo-40398.OdXnR3.rst
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