test_resample.py 文件源码

def test_count(self):
        self.ts[::3] = np.nan

        expected = self.ts.groupby(lambda x: x.year).count()

        grouper = TimeGrouper('A', label='right', closed='right')
        result = self.ts.groupby(grouper).count()
        expected.index = result.index
        assert_series_equal(result, expected)

        result = self.ts.resample('A').count()
        expected.index = result.index
        assert_series_equal(result, expected)