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[red-knot] Move standalone expr inference to for non-name target (#14788)

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## Summary

Ref: https://github.com/astral-sh/ruff/pull/14754#discussion_r1871040646

## Test Plan

Remove the TODO comment and update the mdtest.
This commit is contained in:
Dhruv Manilawala 2024-12-05 18:06:20 +05:30 • committed by GitHub
parent 43bf1a8907
commit e9941cd714
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2 changed files with 1 additions and 7 deletions
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5
crates/red_knot_python_semantic/resources/mdtest/invalid_syntax.md
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@ -26,13 +26,10 @@ def True(for):
# error: [invalid-syntax]
pass
# TODO: Why is there two diagnostics for the same error?
# error: [invalid-syntax]
# error: [invalid-syntax]
# error: [invalid-syntax]
# error: [unresolved-reference] "Name `pass` used when not defined"
# error: [unresolved-reference] "Name `pass` used when not defined"
for while in pass:
pass
@ -58,12 +55,10 @@ match while:
### Attribute expression
```py
# TODO: Why is there two diagnostics for the same error?
# TODO: Check when support for attribute expressions is added
# error: [invalid-syntax]
# error: [unresolved-reference] "Name `foo` used when not defined"
# error: [unresolved-reference] "Name `foo` used when not defined"
for x in foo.pass:
pass
```

3
crates/red_knot_python_semantic/src/types/infer.rs
View file

@ -1900,12 +1900,11 @@ impl<'db> TypeInferenceBuilder<'db> {
is_async: _,
} = for_statement;
self.infer_standalone_expression(iter);
// TODO more complex assignment targets
if let ast::Expr::Name(name) = &**target {
self.infer_definition(name);
} else {
self.infer_standalone_expression(iter);
self.infer_expression(target);
}
self.infer_body(body);