numpy的shuffle函数

import numpy as np
from numpy.random import shuffle
import pandas as pd

df = pd.DataFrame([[1,2,3],[4,5,6],[7,8,9],[11,12,13]],columns=list("ABC"))
shuffle(df.values) 
print(df)
# =============================================================================
#     A   B   C
# 0   7   8   9
# 1   4   5   6
# 2  11  12  13
# 3   1   2   3
# 
# =============================================================================