test_window.py 文件源码

def test_how_compat(self):
        # in prior versions, we would allow how to be used in the resample
        # now that its deprecated, we need to handle this in the actual
        # aggregation functions
        s = pd.Series(
            np.random.randn(20),
            index=pd.date_range('1/1/2000', periods=20, freq='12H'))

        for how in ['min', 'max', 'median']:
            for op in ['mean', 'sum', 'std', 'var', 'kurt', 'skew']:
                for t in ['rolling', 'expanding']:

                    with tm.assert_produces_warning(FutureWarning,
                                                    check_stacklevel=False):

                        dfunc = getattr(pd, "{0}_{1}".format(t, op))
                        if dfunc is None:
                            continue

                        if t == 'rolling':
                            kwargs = {'window': 5}
                        else:
                            kwargs = {}
                        result = dfunc(s, freq='D', how=how, **kwargs)

                        expected = getattr(
                            getattr(s, t)(freq='D', **kwargs), op)(how=how)
                        assert_series_equal(result, expected)