Guido van Rossum <gu...@python.org> added the comment:
Good find! I see that typing.Callable has adopted this structure precisely to enable caching. We should see if we can fix _collections_abc.Callable. It's still early in the life of 3.9 so I think this is reasonable. We'll need a subclass of GenericAlias so that the repr() of Callable[[int, int], int] still comes out correctly. This is similar to how typing.Callable solves it. Do you feel up to submitting a PR for this? Otherwise maybe Batuhan feels like contributing a fix for this? ---------- nosy: +BTaskaya _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue42195> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
