Python的random模块

random模块

random模块提供了一些生成随机数的函数，一些介绍为了简单省略random.

• random()：返回在范围大于等于0.0，且小于1.0内的随机浮点数
• randrange(stop)：返回大于等于0，且小于
• randrange(start, stop[, step])：还是randrange函数，返回在范围大于等于start，且小于stop内，步长为step的随机整数
• randint(a, b)：返回在范围大于等于a，且小于等于b的随机整数

# coding=utf-8
#!/usr/bin/python3

import random

# 0.0 <= x < 1.0随机数
print('0.0 <= x < 1.0随机数')
for i in range(0, 10):
    x = random.random()
    print(x)
    pass

# 0 <= x < 5随机数
print('0 <= x < 5随机数')
for i in range(0, 10):
    x = random.randrange(5)
    print(x)
    pass

# 5 <= x < 10随机数
print('5 <= x < 10随机数')
for i in range(0, 10):
    x = random.randrange(5, 10)
    print(x)
    pass

# 5 <= x <= 10随机数
print('5 <= x <= 10随机数')
for i in range(0, 10):
    x = random.randint(5, 10)
    print(x)

运行结果：

0.0 <= x < 1.0随机数
0.34029878291607385
0.2282371197599904
0.6646715464011697
0.028942492371459738
0.8504465561709386
0.5010168923934861
0.7747864321671818
0.1241085608890693
0.31135409609401055
0.2287655076334516
0 <= x < 5随机数
3 3 1 2 1 0 2 2 2 4
5 <= x < 10随机数
5 7 7 5 8 6 7 6 8 7