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new union syntax (`types.Union`) doesn't work on generic bounds #10949

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from typing import TypeVar


T = TypeVar("T", bound=int | str)

def foo(value: T):
    ...

https://mypy-play.net/?mypy=latest&python=3.10&flags=show-column-numbers%2Cshow-error-codes%2Cstrict%2Ccheck-untyped-defs%2Cdisallow-any-decorated%2Cdisallow-any-expr%2Cdisallow-any-explicit%2Cdisallow-any-generics%2Cdisallow-any-unimported%2Cdisallow-incomplete-defs%2Cdisallow-subclassing-any%2Cdisallow-untyped-calls%2Cdisallow-untyped-decorators%2Cdisallow-untyped-defs%2Cwarn-incomplete-stub%2Cwarn-redundant-casts%2Cwarn-return-any%2Cwarn-unreachable%2Cwarn-unused-configs%2Cwarn-unused-ignores&gist=e32e412ddf26892faaadcf3bda061ad6

DetachHead
added
bugmypy got something wrong
on Aug 9, 2021
DetachHead
changed the title ~~[-]new usion syntax doesn't work on generic bounds[/-]~~ [+]new union syntax doesn't work on generic bounds[/+] on Aug 9, 2021
DetachHead
changed the title ~~[-]new union syntax doesn't work on generic bounds[/-]~~ [+]new union syntax (`types.Union`) doesn't work on generic bounds[/+] on Aug 9, 2021
hauntsaninja commented on Aug 9, 2021
hauntsaninja
on Aug 9, 2021
Collaborator
Thanks, repros on latest master (in general, latest master has fixes for several PEP 604 issues at runtime)
JukkaL
added
false-positivemypy gave an error on correct code

priority-0-high
on Aug 9, 2021
DetachHead commented on Nov 1, 2021
DetachHead
on Nov 1, 2021
ContributorAuthor
seems to be working now on master. assuming #11140 fixed it
Reacted by Shantanu
DetachHead
closed this as completed on Nov 1, 2021
hauntsaninja commented on Nov 1, 2021
hauntsaninja
on Nov 1, 2021
Collaborator
Thanks for checking! If you're up for a it, a PR adding a test would be very welcome!
Reacted by DetachHead
DetachHead commented on Nov 1, 2021
DetachHead
on Nov 1, 2021
ContributorAuthor
@hauntsaninja here you go #11431
DetachHead
reopened this on Nov 1, 2021
hauntsaninja
closed this as completedin #11431 on Nov 3, 2021
hauntsaninja
added a commit that references this issue on Nov 3, 2021
Add test for new union syntax on generic bounds (#11431)
9cbd210
tushar-deepsource
added a commit that references this issue on Jan 20, 2022
Add test for new union syntax on generic bounds (python#11431)
cb1a085

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