Ken Jin <kenjin4...@gmail.com> added the comment:
A possible workaround for _PosArgs in collections.abc without depending on
typing could be like this:
_PosArgs = type('_PosArgs', (tuple, ), {})
This would help out the future type proposals too, because GenericAlias accepts
non-type args.
__args__ of Callable in typing and collections.abc won't be == though. Because
all typing types aren't equal to their builtin counterparts. Eg. Tuple[int] ==
tuple[int] is False.
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<https://bugs.python.org/issue42195>
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