diff --git a/mypy/semanal.py b/mypy/semanal.py index 034d8fb28b42..febb9590887e 100644 --- a/mypy/semanal.py +++ b/mypy/semanal.py @@ -4022,7 +4022,6 @@ def check_and_set_up_type_alias(self, s: AssignmentStmt) -> bool: and not res.args and not empty_tuple_index and not pep_695 - and not pep_613 ) if isinstance(res, ProperType) and isinstance(res, Instance): if not validate_instance(res, self.fail, empty_tuple_index): diff --git a/test-data/unit/check-type-aliases.test b/test-data/unit/check-type-aliases.test index f04bd777ee4e..9527c85ed26a 100644 --- a/test-data/unit/check-type-aliases.test +++ b/test-data/unit/check-type-aliases.test @@ -1243,31 +1243,22 @@ A = Union[int, List[A]] def func(x: A) -> int: ... [builtins fixtures/tuple.pyi] -[case testAliasExplicitNoArgsBasic] -from typing import Any, List, assert_type +[case testAliasNonGeneric] from typing_extensions import TypeAlias +class Foo: ... -Implicit = List -Explicit: TypeAlias = List +ImplicitFoo = Foo +ExplicitFoo: TypeAlias = Foo -x1: Implicit[str] -x2: Explicit[str] # E: Bad number of arguments for type alias, expected 0, given 1 -assert_type(x1, List[str]) -assert_type(x2, List[Any]) -[builtins fixtures/tuple.pyi] - -[case testAliasExplicitNoArgsGenericClass] -# flags: --python-version 3.9 -from typing import Any, assert_type -from typing_extensions import TypeAlias +x1: ImplicitFoo[str] # E: "Foo" expects no type arguments, but 1 given +x2: ExplicitFoo[str] # E: "Foo" expects no type arguments, but 1 given -Implicit = list -Explicit: TypeAlias = list +def is_foo(x: object): + if isinstance(x, ImplicitFoo): + pass + if isinstance(x, ExplicitFoo): + pass -x1: Implicit[str] -x2: Explicit[str] # E: Bad number of arguments for type alias, expected 0, given 1 -assert_type(x1, list[str]) -assert_type(x2, list[Any]) [builtins fixtures/tuple.pyi] [case testAliasExplicitNoArgsTuple] diff --git a/test-data/unit/diff.test b/test-data/unit/diff.test index b7c71c7f37f2..4acf451e2c34 100644 --- a/test-data/unit/diff.test +++ b/test-data/unit/diff.test @@ -1563,6 +1563,7 @@ type H[T] = int __main__.A __main__.C __main__.D +__main__.E __main__.G __main__.H