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Prevent crash on generic NamedTuple with unresolved typevar bound #18585

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Merged
merged 6 commits into from
Feb 3, 2025
Merged

Prevent crash on generic NamedTuple with unresolved typevar bound #18585

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fc2ab45
Prevent crash on generic NamedTuple with unresolved typevar bound
sterliakov Feb 2, 2025
87cf7d5
Move partial_fallback higher up inheritance chain
sterliakov Feb 2, 2025
c2c8c35
Silence "need type annotation" from fallback
sterliakov Feb 2, 2025
85f78ec
improve test
hauntsaninja Feb 3, 2025
2462bf0
Merge remote-tracking branch 'upstream/master' into bugfix/st-crash-n…
sterliakov Feb 3, 2025
6119136
Add a testcase
sterliakov Feb 3, 2025
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3 changes: 3 additions & 0 deletions mypy/semanal_shared.py
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Original file line number Diff line number Diff line change
Expand Up @@ -364,6 +364,9 @@ class HasPlaceholders(BoolTypeQuery):
def __init__(self) -> None:
super().__init__(ANY_STRATEGY)

def visit_tuple_type(self, t: TupleType, /) -> bool:
return super().visit_tuple_type(t) or t.partial_fallback.accept(self)

def visit_placeholder_type(self, t: PlaceholderType) -> bool:
return True

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