Andrei Kulakov <andrei....@gmail.com> added the comment:
I haven't looked too much into typing module, so take this with a grain of salt, but my understanding is that TypedDict is a special construct (as the first sentence in the docs defines it), which can be used as a base. I think most users would consider something a kind of a class if it can be inherited from by a user-defined class, so this classification in the docs is useful. Normally functions can't be used as a base of course. There's no "inheritable from" abc or anything like that and functions are not inherited from "function type". You generally don't care if something is a function, you care if it's a callable and test for that with `callable()`. So in a sense a function is the most inherently duck typed object in Python. The only way for a specific check of a function type is AFAIK type(known_function) == type(myobj), but this type of checking is discouraged. So static checkers that run into a problem with this are probably assuming too much about what a function is or should be in Python. To sum up, TypedDict is a kind of a construct between a class and a function that's more usefully documented as, and used as, a class. The docs make it very clear that it's not your usual, run of the mill class. ---------- nosy: +andrei.avk _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue41973> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
