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[ty] Improve disambiguation of types via fully qualified names (#20141)

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Alex Waygood 2025-08-29 09:44:18 +01:00 • committed by GitHub
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commit 04dc223710
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4 changed files with 183 additions and 88 deletions
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crates/ty_python_semantic/resources/mdtest/function/return_type.md
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@ -260,6 +260,11 @@ def f(cond: bool) -> int:
<!-- snapshot-diagnostics -->
```toml
[environment]
python-version = "3.12"
```
```py
# error: [invalid-return-type]
def f() -> int:
@ -279,6 +284,18 @@ T = TypeVar("T")
# error: [invalid-return-type]
def m(x: T) -> T: ...
class A[T]: ...
def f() -> A[int]:
class A[T]: ...
return A[int]() # error: [invalid-return-type]
class B: ...
def g() -> B:
class B: ...
return B() # error: [invalid-return-type]
```
## Invalid return type in stub file