Pablo Galindo Salgado <pablog...@gmail.com> added the comment:
round() delegates to class.__round__, so what's happening here is that numpy's float implements __round__ in a way it returns a float. There is no restriction on what the class can return: >>> class A: ... def __round__(self): ... return "Oh, no!" ... >>> round(A()) 'Oh, no!' Making additional restrictions is backwards incompatible. Maybe we should add something in the docs regarding the no-restriction point. ---------- nosy: +pablogsal _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue36879> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
