Guido van Rossum <gu...@python.org> added the comment:
There's no point in lamenting the compatibility with Python 3.6, it's water under the bridge. Dispatching on types like list[int] or types generated by NewType is not realistic. Maybe the only thing left to do is to raise an error on registration when the type is e.g. list[int]? Currently that passes, but then attempting to dispatch on *anything* fails with TypeError: issubclass() argument 2 cannot be a parameterized generic ---------- nosy: +gvanrossum, serhiy.storchaka _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34498> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
