Mar 7, 2022 · Jan 25, 2022 · Jan 25, 2022 · Jan 27, 2022 · Jan 27, 2022 · Jan 27, 2022
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
 from typing import ParamSpec, Concatenate, ParamSpecArgs, ParamSpecKwargs
 from typing import TypeGuard
 import abc
 import textwrap
 import typing
 import weakref
 import types
    def test_generic_pep585_forward_ref(self):
        # See https://bugs.python.org/issue41370

        class N:
            a: list['N']
        class C1:
            a: list['C1']
        self.assertEqual(
            get_type_hints(C1, globals(), locals()),
            {'a': list[C1]}
        )

        class C2:
            a: dict['C1', list[List[list['C2']]]]
        self.assertEqual(
            get_type_hints(N, globals(), locals()),
            {'a': list[N]}
            get_type_hints(C2, globals(), locals()),
            {'a':dict[C1,list[List[list[C2]]]]}
        )

        class M:
            a: dict['N', list[List[list['M']]]]
        scope = {}
        exec(textwrap.dedent('''
        from __future__ import annotations
        class C3:
            a: List[list["C2"]]
        '''), scope)
        C3 = scope['C3']

        self.assertEqual(C3.__annotations__['a'], "List[list['C2']]")
        self.assertEqual(
            get_type_hints(M, globals(), locals()),
            {'a':dict[N, list[List[list[M]]]]}
            get_type_hints(C3, globals(), locals()),
            {'a': List[list[C2]]}
        )

    def test_extended_generic_rules_subclassing(self):
Original file line number	Diff line number	Diff line change
Expand Up		@@ -30,6 +30,7 @@
		from typing import ParamSpec, Concatenate, ParamSpecArgs, ParamSpecKwargs
		from typing import TypeGuard
		import abc
		import textwrap
		import typing
		import weakref
		import types
Expand DownExpand Up		@@ -2009,18 +2010,32 @@ def barfoo2(x: CT): ...
		def test_generic_pep585_forward_ref(self):
		# See https://bugs.python.org/issue41370

		class N:
		a: list['N']
		class C1:
		a: list['C1']
		self.assertEqual(
		get_type_hints(C1, globals(), locals()),
		{'a': list[C1]}
		)

		class C2:
		a: dict['C1', list[List[list['C2']]]]
		self.assertEqual(
		get_type_hints(N, globals(), locals()),
		{'a': list[N]}
		get_type_hints(C2, globals(), locals()),
		{'a':dict[C1,list[List[list[C2]]]]}
		)

		class M:
		a: dict['N', list[List[list['M']]]]
		scope = {}
		exec(textwrap.dedent('''
		from __future__ import annotations
		class C3:
		a: List[list["C2"]]
		'''), scope)
		C3 = scope['C3']

		self.assertEqual(C3.__annotations__['a'], "List[list['C2']]")
		self.assertEqual(
		get_type_hints(M, globals(), locals()),
		{'a':dict[N, list[List[list[M]]]]}
		get_type_hints(C3, globals(), locals()),
		{'a': List[list[C2]]}
		)

		def test_extended_generic_rules_subclassing(self):
Expand Down