Treat NotImplemented as a singleton type #20601
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A5rocks
approved these changes
Jan 17, 2026
A5rocks
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Jan 17, 2026
test-data/unit/check-narrowing.test
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| [builtins fixtures/property.pyi] | ||
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| [case testNarrowingNotImplemented] | ||
| # flags: --python-version 3.13 |
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Wait, why is this necessary?
hauntsaninja
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Jan 17, 2026
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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