如何随机打乱DataFrame

 from pandas import DataFrame
 import numpy as np

df=DataFrame(np.arange(16).reshape((4,4)),index=['a','b','c','d'],columns=['one','two','three','four'])  

df
Out[8]: 
   one  two  three  four
a    0    1      2     3
b    4    5      6     7
c    8    9     10    11
d   12   13     14    15

from sklearn.utils import shuffle

df = shuffle(df)

df
Out[11]: 
   one  two  three  four
b    4    5      6     7
a    0    1      2     3
d   12   13     14    15
c    8    9     10    11