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Let issubclass narrow Any #21165

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Let issubclass narrow Any #21165

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Let issubclass narrow Any
hauntsaninja Apr 4, 2026
5381832
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Apr 4, 2026
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[pre-commit.ci] auto fixes from pre-commit.com hooks 
for more information, see https://pre-commit.ci
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pre-commit-ci[bot] committed Apr 4, 2026
commit 53818325e3610a387b1135318cd71961125abeee
4 changes: 3 additions & 1 deletion mypy/checker.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7884,7 +7884,9 @@ def infer_issubclass_maps(self, node: CallExpr, expr: Expression) -> tuple[TypeM
return {}, {}

issubclass_type = self.get_isinstance_type(node.args[1])
yes_type, no_type = self.conditional_types_with_intersection(vartype, issubclass_type, expr)
yes_type, no_type = self.conditional_types_with_intersection(
vartype, issubclass_type, expr
)
yes_map, no_map = conditional_types_to_typemaps(expr, yes_type, no_type)
yes_map, no_map = map(convert_to_typetype, (yes_map, no_map))
return yes_map, no_map
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