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Title: Retain `None` as constraints bottom if no bottoms were provided by sterliakov · Pull Request #19485 · python/mypy · GitHub

Open Graph Title: Retain `None` as constraints bottom if no bottoms were provided by sterliakov · Pull Request #19485 · python/mypy

X Title: Retain `None` as constraints bottom if no bottoms were provided by sterliakov · Pull Request #19485 · python/mypy

Description: Optional static typing for Python. Contribute to python/mypy development by creating an account on GitHub.

Open Graph Description: Current version replaces None (which indicates "no items") with an empty union (=Uninhabited). This breaks inference in some cases. Fixes #19483.

X Description: Current version replaces None (which indicates "no items") with an empty union (=Uninhabited). This breaks inference in some cases. Fixes #19483.

Opengraph URL: https://github.com/python/mypy/pull/19485

X: @github

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Domain: github.com

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