python生成随机数、随机字符、随机字符串

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本文是基于Windows 10系统环境，实现python生成随机数、随机字符、随机字符串：

  • Windows 10

  • PyCharm 2018.3.5 for Windows (exe)

  • python 3.6.8 Windows x86 executable installer

    • (1) 生成随机数

    import random

    num = random.randint(1, 50) # 闭区间 print(num) 1234

    随机选取0到100间的偶数

    import random

    num = random.randrange(0, 101, 2) # 左闭右开区间 print(num) 1234

    随机浮点数

    import random

    num = random.random() # 生成0-1之间的随机浮点数 num2 = random.uniform(1, 10) # 生成的随机浮点数归一化到区间1-10 print(num) print(num2) 123456

    (2) 生成随机字符

    import random

    alphabet = 'abcdefghijklmnopqrstuvwxyz!@#$%^&*()' char = random.choice(alphabet) print(char) 12345

    (3) 生成随机字符串

    生成指定数量的随机字符串

    import random

    alphabet = 'abcdefghijklmnopqrstuvwxyz!@#$%^&*()' characters = random.sample(alphabet, 5) print(characters) 12345

    从a-zA-Z0-9生成指定数量的随机字符

    import random import string

    value = ''.join(random.sample(string.ascii_letters + string.digits, 8)) print(value) 12345

    随机选取字符串

    import random

    table = ['剪刀', '石头', '布'] print(random.choice(table)) 1234