下面是以注册和登录来做为例子

import hashlib def md5(pwd):obj = hashlib.md5("dfdfderewcsf".encode('utf-8'))  # 加盐 obj.update(pwd.encode('utf-8'))password = obj.hexdigest()return passworddef register():user = input("username: ")pwd = input("password: ")password = md5(pwd)# 注册信息存到 users.txt 文件里with open("users.txt", mode='a', encoding='utf-8') as f:line = "username: {} | password: {}\n".format(user, password)f.write(line)def login():user = input("username: ")pwd = input("password: ")password = md5(pwd)isSuccess = Falsewith open("users.txt", mode='r', encoding='utf-8') as f:for line in f:line = line.strip()dbUser, dbPwd = line.split('|')if dbUser.strip().split(':')[1].strip() == user and dbPwd.strip().split(':')[1].strip() == password:isSuccess = True break if isSuccess:print("登录成功")else:print("登录失败")def run():func_dict = {"1": register,"2": login}print("1. 注册   2. 登录")choice = input("序号：")func = func_dict.get(choice)if not func:print("输入错误")else:func()if __name__ == '__main__':run()

结果如下：

# 注册1. 注册   2. 登录
序号：1
username: 4
password: 1

# 登录1. 注册   2. 登录
序号：2
username: 4
password: 1
登录成功

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给个赞呗~