Sergey B Kirpichev <skirpic...@gmail.com> added the comment:
> The module documentation should not contain all historical reasons of every > design decision. Sure. But, for example, there should be an explanation of why foo+foo.denominator could produce an error for a valid implementation of the Integral abc. Such interoperability is not assumed by the docs, according to provided examples (https://docs.python.org/3/library/numbers.html#implementing-the-arithmetic-operations). > One of reasons is that type(self) not always have a constructor with > compatible interface. I hardly can imagine a constructor for the Integral type, which doesn't accept a python integer as an argument. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue47079> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
