test_datetimelike.py 文件源码

def test_get_indexer(self):
        idx = pd.date_range('2000-01-01', periods=3)
        tm.assert_numpy_array_equal(idx.get_indexer(idx), [0, 1, 2])

        target = idx[0] + pd.to_timedelta(['-1 hour', '12 hours',
                                           '1 day 1 hour'])
        tm.assert_numpy_array_equal(idx.get_indexer(target, 'pad'), [-1, 0, 1])
        tm.assert_numpy_array_equal(
            idx.get_indexer(target, 'backfill'), [0, 1, 2])
        tm.assert_numpy_array_equal(
            idx.get_indexer(target, 'nearest'), [0, 1, 1])
        tm.assert_numpy_array_equal(
            idx.get_indexer(target, 'nearest',
                            tolerance=pd.Timedelta('1 hour')),
            [0, -1, 1])
        with tm.assertRaises(ValueError):
            idx.get_indexer(idx[[0]], method='nearest', tolerance='foo')