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Raise errors on unbound TypeVars with values #15732

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Merged
sobolevn merged 4 commits into from
Jul 21, 2023
Merged

Raise errors on unbound TypeVars with values #15732

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ecb5148
Raise errors on unbound TypeVars with values
sobolevn Jul 21, 2023
4d8d59f
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Jul 21, 2023
c7204f3
Fix CI
sobolevn Jul 21, 2023
0ad41e2
Merge branch 'typevars-with-values' of https://github.com/python/mypy…
sobolevn Jul 21, 2023
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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 Jul 21, 2023
commit 4d8d59f50f53d94da27defe6abd76591d66921f8
4 changes: 3 additions & 1 deletion mypy/checker.py
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Expand Up @@ -1127,7 +1127,9 @@ def check_func_def(
message_registry.RETURN_TYPE_CANNOT_BE_CONTRAVARIANT, typ.ret_type
)
self.check_unbound_return_typevar(typ)
elif isinstance(original_typ.ret_type, TypeVarType) and original_typ.ret_type.values:
elif (
isinstance(original_typ.ret_type, TypeVarType) and original_typ.ret_type.values
):
# Since type vars with values are expanded, the return type is changed
# to a raw value. This is a hack to get it back.
self.check_unbound_return_typevar(original_typ)
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