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bpo-43783: Add ParamSpecArgs/Kwargs (GH-25298)

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Jelle Zijlstra 2021-04-10 19:57:05 -07:00 • committed by GitHub
parent 750f484752
commit 522433601a
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5 changed files with 91 additions and 11 deletions
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16
Lib/test/test_typing.py
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@ -25,7 +25,7 @@ from typing import IO, TextIO, BinaryIO
from typing import Pattern, Match
from typing import Annotated, ForwardRef
from typing import TypeAlias
from typing import ParamSpec, Concatenate
from typing import ParamSpec, Concatenate, ParamSpecArgs, ParamSpecKwargs
import abc
import typing
import weakref
@ -3004,6 +3004,7 @@ class GetTypeHintTests(BaseTestCase):
class GetUtilitiesTestCase(TestCase):
def test_get_origin(self):
T = TypeVar('T')
P = ParamSpec('P')
class C(Generic[T]): pass
self.assertIs(get_origin(C[int]), C)
self.assertIs(get_origin(C[T]), C)
@ -3022,6 +3023,8 @@ class GetUtilitiesTestCase(TestCase):
self.assertIs(get_origin(list[int]), list)
self.assertIs(get_origin(list), None)
self.assertIs(get_origin(list | str), types.Union)
self.assertIs(get_origin(P.args), P)
self.assertIs(get_origin(P.kwargs), P)
def test_get_args(self):
T = TypeVar('T')
@ -4265,11 +4268,16 @@ class ParamSpecTests(BaseTestCase):
self.assertEqual(C4.__args__, (P, T))
self.assertEqual(C4.__parameters__, (P, T))
# ParamSpec instances should also have args and kwargs attributes.
def test_args_kwargs(self):
P = ParamSpec('P')
self.assertIn('args', dir(P))
self.assertIn('kwargs', dir(P))
P.args
P.kwargs
self.assertIsInstance(P.args, ParamSpecArgs)
self.assertIsInstance(P.kwargs, ParamSpecKwargs)
self.assertIs(P.args.__origin__, P)
self.assertIs(P.kwargs.__origin__, P)
self.assertEqual(repr(P.args), "P.args")
self.assertEqual(repr(P.kwargs), "P.kwargs")
def test_user_generics(self):
T = TypeVar("T")