tuple slice should not propagate fallback #16154
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I want to add #8776 (comment) as a test case, but I'm not sure where |
graingert
commented
Sep 21, 2023
| @@ -2416,13 +2416,14 @@ def copy_modified( | |||
| items = self.items | |||
| return TupleType(items, fallback, self.line, self.column) | |||
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| def slice(self, begin: int | None, end: int | None, stride: int | None) -> TupleType: | |||
| def slice( | |||
| self, begin: int | None, end: int | None, stride: int | None, *, fallback: Instance | None | |||
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fallback should always be named_type("builtins.tuple") but I'm not sure how to make one without access to a TypeChecker instance
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hauntsaninja
approved these changes
Sep 30, 2023
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@hauntsaninja ok conflicts resolved |
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Tests are failing, let me know if you could use assistance on getting your nice #8776 (comment) example in a test |
graingert
commented
Oct 1, 2023
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@hauntsaninja ok I added that test |
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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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Fixes #8776
NamedTuple (or any other tuple subtype) slicing should not propagate the fallback