多重索引中的熊猫自定义排序行

Given the following:

鉴于以下内容：

import pandas as pd
arrays = [['bar', 'bar', 'bar', 'baz', 'baz', 'baz', 'baz'],
          ['total', 'two', 'one', 'two', 'four', 'total', 'five']]
tuples = list(zip(*arrays))
index = pd.MultiIndex.from_tuples(tuples, names=['first', 'second'])
s = pd.Series(np.random.randn(7), index=index)
s

first  second
bar    total     0.334158
       two      -0.267854
       one       1.161727
baz    two      -0.748685
       four     -0.888634
       total     0.383310
       five      0.506120
dtype: float64
import pandas