bpo-38431: Fix __repr__ method of InitVar to work with typing objects. (GH-16702)
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@ -206,7 +206,12 @@ class InitVar:
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self.type = type
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def __repr__(self):
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return f'dataclasses.InitVar[{self.type.__name__}]'
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if isinstance(self.type, type):
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type_name = self.type.__name__
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else:
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# typing objects, e.g. List[int]
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type_name = repr(self.type)
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return f'dataclasses.InitVar[{type_name}]'
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def __class_getitem__(cls, type):
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return InitVar(type)
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@ -1102,6 +1102,8 @@ class TestCase(unittest.TestCase):
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# Make sure the repr is correct.
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self.assertEqual(repr(InitVar[int]), 'dataclasses.InitVar[int]')
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self.assertEqual(repr(InitVar[List[int]]),
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'dataclasses.InitVar[typing.List[int]]')
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def test_init_var_inheritance(self):
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# Note that this deliberately tests that a dataclass need not
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@ -0,0 +1 @@
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Fix ``__repr__`` method for :class:`dataclasses.InitVar` to support typing objects, patch by Samuel Colvin.
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