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Narrow match pattern AST annotations to concrete variants - #22000
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hauntsaninja merged 1 commit intoSep 19, 2026
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
adamtheturtle
marked this pull request as ready for review
September 17, 2026 14:58
hauntsaninja
approved these changes
Sep 19, 2026
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This lets clients exhaustively match a pattern with
assert_neverwithout a local type assertion. Downstream example: mypy-strict-kwargs#858.