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[ty] Infer slightly more precise types for comprehensions (#20111)
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Alex Waygood 2025-08-27 13:21:47 +01:00 • committed by GitHub
parent d71518b369
commit 7d0c8e045c
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18
crates/ty_python_semantic/resources/mdtest/annotations/invalid.md
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@ -48,6 +48,24 @@ def _(
reveal_type(h_) # revealed: Unknown
reveal_type(i_) # revealed: Unknown
reveal_type(j_) # revealed: Unknown
# Inspired by the conformance test suite at
# https://github.com/python/typing/blob/d4f39b27a4a47aac8b6d4019e1b0b5b3156fabdc/conformance/tests/aliases_implicit.py#L88-L122
B = [x for x in range(42)]
C = {x for x in range(42)}
D = {x: y for x, y in enumerate(range(42))}
E = (x for x in range(42))
def _(
b: B, # error: [invalid-type-form]
c: C, # error: [invalid-type-form]
d: D, # error: [invalid-type-form]
e: E, # error: [invalid-type-form]
):
reveal_type(b) # revealed: Unknown
reveal_type(c) # revealed: Unknown
reveal_type(d) # revealed: Unknown
reveal_type(e) # revealed: Unknown
```
## Invalid AST nodes