test_generic.py 文件源码

def test_interp_alt_scipy(self):
        tm._skip_if_no_scipy()
        df = DataFrame({'A': [1, 2, np.nan, 4, 5, np.nan, 7],
                        'C': [1, 2, 3, 5, 8, 13, 21]})
        result = df.interpolate(method='barycentric')
        expected = df.copy()
        expected.ix[2, 'A'] = 3
        expected.ix[5, 'A'] = 6
        assert_frame_equal(result, expected)

        result = df.interpolate(method='barycentric', downcast='infer')
        assert_frame_equal(result, expected.astype(np.int64))

        result = df.interpolate(method='krogh')
        expectedk = df.copy()
        expectedk['A'] = expected['A']
        assert_frame_equal(result, expectedk)

        _skip_if_no_pchip()
        import scipy
        result = df.interpolate(method='pchip')
        expected.ix[2, 'A'] = 3

        if LooseVersion(scipy.__version__) >= '0.17.0':
            expected.ix[5, 'A'] = 6.0
        else:
            expected.ix[5, 'A'] = 6.125

        assert_frame_equal(result, expected)