[Python-ideas] Re: Inspired by Scala, a new syntax for Union type

On Aug 29, 2019, at 15:28, Guido van Rossum <guido@python.org> wrote:

A wart will be that we can make `int | None` work but we shouldn't make `None | int` work (I don't want to add any new operator overloads to `None`, it should always be an error).

Is there a reason that type.__ror__ wouldn’t handle that, something funky about type, or about builtin types in general, that I’m forgetting?