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Title: Unify empty context fallback in assignments by ilevkivskyi · Pull Request #20851 · python/mypy · GitHub

Open Graph Title: Unify empty context fallback in assignments by ilevkivskyi · Pull Request #20851 · python/mypy

X Title: Unify empty context fallback in assignments by ilevkivskyi · Pull Request #20851 · python/mypy

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

Open Graph Description: Fixes #11455 (kind of accidentally) As we discussed with @JukkaL before, using full type context as a fallback will help with #19918 for --allow-redefinition-new. This allowed to fix most errors on...

X Description: Fixes #11455 (kind of accidentally) As we discussed with @JukkaL before, using full type context as a fallback will help with #19918 for --allow-redefinition-new. This allowed to fix most errors on...

Opengraph URL: https://github.com/python/mypy/pull/20851

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og:image:altFixes #11455 (kind of accidentally) As we discussed with @JukkaL before, using full type context as a fallback will help with #19918 for --allow-redefinition-new. This allowed to fix most errors on...
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Feb 20, 2026https://github.com/python/mypy/pull/20851#issue-3966078711
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Unify empty context fallback in assignmentshttps://github.com/python/mypy/pull/20851/commits/524b1742a1d1c2825ec55a39d2439fca96d238da
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February 20, 2026 12:20https://github.com/python/mypy/pull/20851#commits-pushed-d26cd46
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Try also the opposite orderhttps://github.com/python/mypy/pull/20851/commits/d26cd46e436f4f55909b67625be7265af051f014
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Allow redefintions when compiling as wellhttps://github.com/python/mypy/pull/20851/commits/54d4579f5f40685f61edd92f8f6113c0b6e30dd9
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Check #20851 sterliakov/mypy-issues#270 https://github.com/sterliakov/mypy-issues/issues/270
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Another micro-optimization; postpone enabling in self-checkhttps://github.com/python/mypy/pull/20851/commits/f6966e14e21a565b522768b9df29cc434366dfbe
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Allow redefinitions for function arguments #20853 https://github.com/python/mypy/pull/20853
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Feb 22, 2026https://github.com/python/mypy/pull/20851#issuecomment-3941920576
Avoid unnecessary work when checking deferred functions #20860https://github.com/python/mypy/pull/20860
Do not repor trivial narrowing as a change in binder #20862https://github.com/python/mypy/pull/20862
Fix loop convergence with redefinitions #20865https://github.com/python/mypy/pull/20865
Fast container literal cache should not be used in loops #20866https://github.com/python/mypy/issues/20866
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Fix loop convergence with redefinitions #20865 https://github.com/python/mypy/pull/20865
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generics inferred differently when assigning to variable even though the variable's type is the same https://github.com/python/mypy/issues/11455
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