test_period.py 文件源码

def test_align_series(self):
        rng = period_range('1/1/2000', '1/1/2010', freq='A')
        ts = Series(np.random.randn(len(rng)), index=rng)

        result = ts + ts[::2]
        expected = ts + ts
        expected[1::2] = np.nan
        assert_series_equal(result, expected)

        result = ts + _permute(ts[::2])
        assert_series_equal(result, expected)

        # it works!
        for kind in ['inner', 'outer', 'left', 'right']:
            ts.align(ts[::2], join=kind)
        msg = "Input has different freq=D from PeriodIndex\\(freq=A-DEC\\)"
        with assertRaisesRegexp(ValueError, msg):
            ts + ts.asfreq('D', how="end")