Python random模块

import random

# 随机小数
ran_num = random.random()  # 大于0且小于1之间的小数
print(ran_num)
ran_float = random.uniform(1, 3)  # 大于1小于3的小数
print(ran_float)
# 恒富：发红包

# 随机整数
ran_int = random.randint(1, 5)  # 大于等于1且小于等于5之间的整数
print(ran_int)
ran_range = random.randrange(1, 10, 2)  # 大于等于1且小于10之间的奇数
print(ran_range)

# 随机选择一个返回
ran_lis = random.choice([1, '23', [4, 5]])  # #1或者23或者[4,5]
print(ran_lis)
# 随机选择多个返回，返回的个数为函数的第二个参数
ran_sam = random.sample([1, '23', [4, 5]], 2)  # #列表元素任意2个组合
print(ran_sam)
# 打乱列表顺序
item = [1, 3, 5, 7, 9]
random.shuffle(item)  # 打乱次序
print(item)
random.shuffle(item)
print(item)

结果：

D:\YuchuanProjectData\PythonProject\venv\Scripts\python.exe D:/YuchuanProjectData/PythonProject/YuchuanDemo007.py
0.2968574680942089
1.4248673900482187
4
3
1
['23', [4, 5]]
[7, 5, 9, 3, 1]
[9, 7, 5, 3, 1]
Process finished with exit code 0

练习：生成随机验证码

import random

def random_code():
    code = ""
    for i in range(5):
        ran_num = random.randint(1, 9)
        ran_char = chr(random.randint(65, 90))
        add = random.choices([ran_num, ran_char])
        code = "".join([code, str(add)])
    return code

print(random_code())

结果：

D:\YuchuanProjectData\PythonProject\venv\Scripts\python.exe D:/YuchuanProjectData/PythonProject/YuchuanDemo007.py
['V']['B'][2]['W'][9]
Process finished with exit code 0