Mak Nazečić-Andrlon added the comment: It's not about equality.
>>> class A: pass ... >>> (float("nan"), A()) < (float("nan"), A()) False That < comparison should throw a TypeError, since NaN < NaN is False, in the same way that 0 < 0 is False here: >>> (0, A()) < (0, A()) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: unorderable types: A() < A() ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21873> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com