python 模块 random

In [1]: import random

In [2]: random.uniform(0.7,5)
Out[2]: 0.7418808135797732

In [3]: random.uniform(0.7,5)
Out[3]: 1.20091265582769

In [4]: random.uniform(0.7,5)
Out[4]: 4.7791965347089125

In [5]: random.uniform(0.7,5)
Out[5]: 2.7882796316003295


In [6]: random.choice([2,3,4,5])
Out[6]: 3

In [7]:

In [7]: random.choice([2,3,4,5])
Out[7]: 3

In [8]: random.choice([2,3,4,5])
Out[8]: 5

In [9]: random.choices([2,3,4,5])
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
 in ()
----> 1 random.choices([2,3,4,5])

AttributeError: 'module' object has no attribute 'choices'

python3 有choices