Python random模块(以后用到一个再更新一个)

random模块是产生随机数的模块

1、random.random()

这是产生0~1之间一个随机浮点数，但是不会包括1

import random
num = 0
while num < 10:
    print(random.random(),'\t',end='')
    num += 1
    if num % 5 == 0:
        print()

0.5498432689828007     0.3831223570880221     0.9274241638226295     0.8374157068420778     0.17528783212413213
0.5786066256544846     0.48102842322167694     0.8698537499794482     0.35050739178155266     0.8785173644970733 

2、random.getrandbits(n):

这是返回从0~(2**n - 1)里面的随机一个数

import random
num = 0
while num < 10:
    print(random.getrandbits(3),'\t',end='')   # 2**3 - 1 = 7
    num += 1
    if num % 5 == 0:
        print()

0     2     7     0     7
4     1     7     5     2     

3、random.shuffle(list)

打乱一个列表，将列表里面的元素再重新随机排列，但是对与多维数组来说只能重新排列第一纬度

一维列表：

port random
lst = [1 ,2, 3, 4, 5, 6, 7, 8, 9, 0]
num = 0
while num < 5:
    random.shuffle(lst)
    print(lst)
    num += 1

[5, 3, 0, 2, 7, 1, 6, 8, 9, 4]
[0, 4, 9, 1, 2, 7, 5, 8, 6, 3]
[5, 1, 0, 7, 2, 9, 8, 4, 6, 3]
[3, 6, 7, 0, 1, 9, 4, 5, 2, 8]
[0, 6, 5, 1, 9, 3, 2, 4, 7, 8]

二维列表：

import random
lst = [
    [4, 5, 6, 7, 8],
    [0, 2, 1, 3, 9],
    [0, 5, 0, 5, 4],
    [1, 2, 3, 4, 5]
]
num = 0
while num < 5:
    random.shuffle(lst)
    print(lst)
    num += 1

[[0, 5, 0, 5, 4], [1, 2, 3, 4, 5], [0, 2, 1, 3, 9], [4, 5, 6, 7, 8]]
[[1, 2, 3, 4, 5], [0, 2, 1, 3, 9], [4, 5, 6, 7, 8], [0, 5, 0, 5, 4]]
[[0, 2, 1, 3, 9], [4, 5, 6, 7, 8], [1, 2, 3, 4, 5], [0, 5, 0, 5, 4]]
[[0, 5, 0, 5, 4], [1, 2, 3, 4, 5], [4, 5, 6, 7, 8], [0, 2, 1, 3, 9]]
[[0, 2, 1, 3, 9], [4, 5, 6, 7, 8], [1, 2, 3, 4, 5], [0, 5, 0, 5, 4]]