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Title: Preserve some lost narrowing, cleanup by hauntsaninja · Pull Request #20674 · python/mypy · GitHub

Open Graph Title: Preserve some lost narrowing, cleanup by hauntsaninja · Pull Request #20674 · python/mypy

X Title: Preserve some lost narrowing, cleanup by hauntsaninja · Pull Request #20674 · python/mypy

Description: #20660 is proving a little tricky, so I'm going to try and land some of the diff independently. I think of this as mostly a cleanup PR, but it does change a few semantics. In particular, the places where we previously added a {} to the list of type maps used to clobber some narrowing

Open Graph Description: #20660 is proving a little tricky, so I'm going to try and land some of the diff independently. I think of this as mostly a cleanup PR, but it does change a few semantics. In particular, the pl...

X Description: #20660 is proving a little tricky, so I'm going to try and land some of the diff independently. I think of this as mostly a cleanup PR, but it does change a few semantics. In particular, th...

Opengraph URL: https://github.com/python/mypy/pull/20674

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