test_resample.py 文件源码

def test_resample_consistency(self):

        # GH 6418
        # resample with bfill / limit / reindex consistency

        i30 = pd.date_range('2002-02-02', periods=4, freq='30T')
        s = pd.Series(np.arange(4.), index=i30)
        s[2] = np.NaN

        # Upsample by factor 3 with reindex() and resample() methods:
        i10 = pd.date_range(i30[0], i30[-1], freq='10T')

        s10 = s.reindex(index=i10, method='bfill')
        s10_2 = s.reindex(index=i10, method='bfill', limit=2)
        rl = s.reindex_like(s10, method='bfill', limit=2)
        r10_2 = s.resample('10Min').bfill(limit=2)
        r10 = s.resample('10Min').bfill()

        # s10_2, r10, r10_2, rl should all be equal
        assert_series_equal(s10_2, r10)
        assert_series_equal(s10_2, r10_2)
        assert_series_equal(s10_2, rl)