Message 368015 - Python tracker

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Author	serhiy.storchaka
Recipients	gvanrossum, levkivskyi, serhiy.storchaka
Date	2020-05-04.08:07:12
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1588579632.5.0.091811612876.issue40494@roundup.psfhosted.org>
In-reply-to

Content
There is a difference between typing.Callable and collections.abc.Callable. >>> import typing, collections.abc >>> T = typing.TypeVar('T') >>> C1 = typing.Callable[[T], T] >>> C2 = collections.abc.Callable[[T], T] >>> C1 typing.Callable[[~T], ~T] >>> C2 collections.abc.Callable[[~T], ~T] >>> C1[int] typing.Callable[[int], int] >>> C2[int] collections.abc.Callable[[~T], int]

There is a difference between typing.Callable and collections.abc.Callable.

>>> import typing, collections.abc
>>> T = typing.TypeVar('T')
>>> C1 = typing.Callable[[T], T]
>>> C2 = collections.abc.Callable[[T], T]
>>> C1
typing.Callable[[~T], ~T]
>>> C2
collections.abc.Callable[[~T], ~T]
>>> C1[int]
typing.Callable[[int], int]
>>> C2[int]
collections.abc.Callable[[~T], int]

History
Date	User	Action	Args
2020-05-04 08:07:12	serhiy.storchaka	set	recipients: + serhiy.storchaka, gvanrossum, levkivskyi
2020-05-04 08:07:12	serhiy.storchaka	set	messageid: <1588579632.5.0.091811612876.issue40494@roundup.psfhosted.org>
2020-05-04 08:07:12	serhiy.storchaka	link	issue40494 messages
2020-05-04 08:07:12	serhiy.storchaka	create