Ivan Levkivskyi added the comment: > What if explicitly set __abstractmethods__ = True for these types?
Unfortunately this does not help. I think this is because dash_R_cleanup only clears caches for classes in collections.abc.__all__ and their immediate .__subclasses__(). Making this recursive (i.e. also clearing caches of __subclasses__() of __subclasses__() etc) will probably fix the problem (provided we also add __abstractmethods__ = True). However, this looks a bit too complex for me. I would rather add few more typing._cleanups (anyway this failure only happens with typing ABCs) ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29638> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
