That's proposed in PEP 645 (https://www.python.org/dev/peps/pep-0645/). Personally I think it's not necessary, we should just write MyType | None. (Yes, this is directly from TypeScript.)
On Sun, Aug 15, 2021 at 6:10 AM Will Bradley <derivativedude...@gmail.com> wrote: > Hi all, > > As of 3.10 (PEP 604) we've gotten syntactical support for a common type > operation— namely, typing.Union[Type1, Type2] can now be written as Type1 | > Type2 . This is achieved via overriding the __or__ method. > > I propose the ? symbol as sugar for typing.Optional, so that > typing.Optional[MyType] can be written as MyType? . (Yes, this is lifted > directly from C#.) > > Thoughts? Is it unnecessary now that we can write MyType | None as of 3.10? > > Thanks, > Will > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/VYZOMTCNSSAJNAYHRE5A5BJUMACY57SF/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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