Fix type checking of dict type aliases #20170
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Resolves a bad false negative and a false positive Previously, for `D = dict[str, str]` we would require a type annotation for `d = D()` and we would fail to error on `D(x=1)` Fixes python#11093, fixes python#11246
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
ilevkivskyi
approved these changes
Nov 3, 2025
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Resolves a bad false negative and a false positive
Previously, for
D = dict[str, str]we would require a type annotation ford = D()and we would fail to error onD(x=1)Fixes #11093, fixes #11246, fixes #13320, fixes #16047