test_period.py 文件源码

def test_slice_with_zero_step_raises(self):
        ts = Series(np.arange(20),
                    period_range('2014-01', periods=20, freq='M'))
        self.assertRaisesRegexp(ValueError, 'slice step cannot be zero',
                                lambda: ts[::0])
        self.assertRaisesRegexp(ValueError, 'slice step cannot be zero',
                                lambda: ts.loc[::0])
        self.assertRaisesRegexp(ValueError, 'slice step cannot be zero',
                                lambda: ts.ix[::0])