Fix function containing PEP 593 Annotated with a string literal second arg causing 'Name "x" is not defined" error #10777
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…d result in 'Name "x" is not defined' errors.
| pass | ||
| reveal_type(f1) # N: Revealed type is "def (a: builtins.str) -> Any" | ||
| def f2(a: Annotated["str", "metadata"]): | ||
| pass |
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Could you reveal_type() this one too?
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And maybe also add a testcase with a generic function, so we can confirm that a typevar in the first arg to Annotated is still picked up correctly.
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@JelleZijlstra I added a case. Is it correct?
JelleZijlstra
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Jan 20, 2022
…d arg causing 'Name "x" is not defined" error (python#10777) Fixes python#9868 When analyzing function definitions, mypy attempts to infer type variables. The code which did that also tried to look into the second type arg to `Annotated`, which, if a string literal, resulted in a lookup which may cause a 'Name "x" is not defined" error. Co-authored-by: 97littleleaf11 <[email protected]> Co-authored-by: Jingchen Ye <[email protected]>
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Description
Fixes #9868
When analyzing function definitions, mypy attempts to infer type variables. The code which did that also tried to look into the second type arg to
Annotated, which, if a string literal, resulted in a lookup which may cause a 'Name "x" is not defined" error.Test Plan
Test was added for this case, which previously failed.
Tests were added to ensure that the first type var to
Annotatedwas still analyzed correctly.