Antony Lee added the comment: The hash function of the Signature class is actually incompatible with the definition of Signature equality, which doesn't consider the order of keyword-only arguments:
>>> from inspect import signature >>> s1 = signature(lambda *, x, y: None); s2 = signature(lambda *, y, x: None) >>> s1 == s2 True >>> hash(s1) == hash(s2) False Actually the implementation of Signature.__eq__ seems way too complicated; I would suggest making a helper method returning (return_annotation, tuple(non-kw-only-params), frozenset(kw-only-params)) so that __eq__ can compare these values while __hash__ can hash that tuple. ---------- nosy: +Antony.Lee _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20334> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
