import numpy as npnumpy.randomrand(d0, d1, ..., dn)

In [2]: x=np.random.rand(2,5)

In [3]: x

Out[3]:

array([[ 0.84286554, 0.50007593, 0.66500549, 0.97387807, 0.03993009],

[ 0.46391661, 0.50717355, 0.21527461, 0.92692517, 0.2567891 ]])

randn(d0, d1, ..., dn)查询结果为标准正态分布

In [4]: x=np.random.randn(2,5)

In [5]: x

Out[5]:

array([[-0.77195196, 0.26651203, -0.35045793, -0.0210377 , 0.89749635],

[-0.20229338, 1.44852833, -0.10858996, -1.65034606, -0.39793635]])randint(low,high,size)

生成low到high之间（半开区间 [low, high)），size个数据

In [6]: x=np.random.randint(1,8,4)

In [7]: x

Out[7]: array([4, 4, 2, 7])random_integers(low,high,size)

生成low到high之间（闭区间 [low, high)），size个数据

In [10]: x=np.random.random_integers(2,10,5)

In [11]: x

Out[11]: array([7, 4, 5, 4, 2])