test_categorical.py 文件源码

def test_constructor_unsortable(self):

        # it works!
        arr = np.array([1, 2, 3, datetime.now()], dtype='O')
        factor = Categorical.from_array(arr, ordered=False)
        self.assertFalse(factor.ordered)

        if compat.PY3:
            self.assertRaises(
                TypeError, lambda: Categorical.from_array(arr, ordered=True))
        else:
            # this however will raise as cannot be sorted (on PY3 or older
            # numpies)
            if LooseVersion(np.__version__) < "1.10":
                self.assertRaises(
                    TypeError,
                    lambda: Categorical.from_array(arr, ordered=True))
            else:
                Categorical.from_array(arr, ordered=True)