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bpo-46981: Remove typing._TypingEmpty (GH-31836)

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* get_args(Tuple[()]) now returns () instead of ((),).
* Tuple[Unpack[Ts]][()] now returns the result equal to Tuple[()].
This commit is contained in:
Serhiy Storchaka 2022-03-17 09:52:24 +02:00 • committed by GitHub
parent 4674fd4e93
commit 15df8f8d89
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3 changed files with 5 additions and 15 deletions
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8
Lib/test/test_typing.py
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@ -469,14 +469,12 @@ class TypeVarTupleTests(BaseTestCase):
for A in G, Tuple:
B = A[Unpack[Ts]]
if A != Tuple:
self.assertEqual(B[()], A[()])
self.assertEqual(B[()], A[()])
self.assertEqual(B[float], A[float])
self.assertEqual(B[float, str], A[float, str])
C = List[A[Unpack[Ts]]]
if A != Tuple:
self.assertEqual(C[()], List[A[()]])
self.assertEqual(C[()], List[A[()]])
self.assertEqual(C[float], List[A[float]])
self.assertEqual(C[float, str], List[A[float, str]])
@ -4248,7 +4246,7 @@ class GetUtilitiesTestCase(TestCase):
self.assertEqual(get_args(Union[int, Callable[[Tuple[T, ...]], str]]),
(int, Callable[[Tuple[T, ...]], str]))
self.assertEqual(get_args(Tuple[int, ...]), (int, ...))
self.assertEqual(get_args(Tuple[()]), ((),))
self.assertEqual(get_args(Tuple[()]), ())
self.assertEqual(get_args(Annotated[T, 'one', 2, ['three']]), (T, 'one', 2, ['three']))
self.assertEqual(get_args(List), ())
self.assertEqual(get_args(Tuple), ())