Mark Dickinson <dicki...@gmail.com> added the comment:
> If SupportsComplex and SupportsBytes are just for "has __complex__/__bytes__ > method", they are virtually useless. I agree that "SupportsComplex" isn't directly useful in user-land. I think its main value is as a building block in things like `Union[SupportsComplex, SupportsFloat, SupportsIndex]`. For me, the gain from implementing complex.__complex__ is that the test "can be used as a complex number" can now be expressed purely in terms of the protocols offered, without reference to concrete types. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue24234> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
