python 如何生成如下的注释？

"""
Helper class to unstack data / pivot with multi-level index

Parameters
----------
level : int or str, default last level
    Level to "unstack". Accepts a name for the level.

Examples
--------
>>> import pandas as pd
>>> index = pd.MultiIndex.from_tuples([('one', 'a'), ('one', 'b'),
...                                    ('two', 'a'), ('two', 'b')])
>>> s = pd.Series(np.arange(1.0, 5.0), index=index)
>>> s
one  a   1
     b   2
two  a   3
     b   4
dtype: float64

>>> s.unstack(level=-1)
     a   b
one  1  2
two  3  4

>>> s.unstack(level=0)
   one  two
a  1   2
b  3   4

Returns
-------
unstacked : DataFrame
"""