Python pyspark Series.keys用法及代码示例

>>> midx = pd.MultiIndex([['lama', 'cow', 'falcon'],
...                       ['speed', 'weight', 'length']],
...                      [[0, 0, 0, 1, 1, 1, 2, 2, 2],
...                       [0, 1, 2, 0, 1, 2, 0, 1, 2]])
>>> psser = ps.Series([45, 200, 1.2, 30, 250, 1.5, 320, 1, 0.3], index=midx)

>>> psser.keys()  
MultiIndex([(  'lama',  'speed'),
            (  'lama', 'weight'),
            (  'lama', 'length'),
            (   'cow',  'speed'),
            (   'cow', 'weight'),
            (   'cow', 'length'),
            ('falcon',  'speed'),
            ('falcon', 'weight'),
            ('falcon', 'length')],
           )