test_extras.py 文件源码

def test_bias(self):
        x, y = self.data, self.data2
        expected = np.corrcoef(x)
        # bias raises DeprecationWarning
        with catch_warn_mae():
            warnings.simplefilter("always")
            assert_warns(DeprecationWarning, corrcoef, x, y, True, False)
            assert_warns(DeprecationWarning, corrcoef, x, y, True, True)
            assert_warns(DeprecationWarning, corrcoef, x, bias=False)
            warnings.simplefilter("ignore")
            # bias has no or negligible effect on the function
            assert_almost_equal(corrcoef(x, bias=1), expected)