Jelle Zijlstra <jelle.zijls...@gmail.com> added the comment:
I'm guessing you're referring to https://docs.python.org/3.8/library/math.html#math.nan. The text says explicitly that math.nan is "equivalent" to float("nan"), not that it is equal. This is correct. nan is not equal to itself, because (for better or worse) that's what the IEEE standard requires. You can instead use math.isnan() to check whether a number is a nan. ---------- nosy: +JelleZijlstra _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue47020> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
