How to use 'remove leading zeros python' in Python

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def test_remove_leading_zeros(self):
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    """
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    Tests removing leading zeros from a number
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    """
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    for num, stripped in (
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        ("", ""),
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        ("5", "5"),
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        ("010", "10"),
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        ("M10", "M10"),
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        ("M002", "M2"),
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        ("-09.9", "-9.9"),
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        ("000", "0"),
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        ("M00", "0"),
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    ):
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        self.assertEqual(core.remove_leading_zeros(num), stripped)