用python实现用户注册登陆系统

import osdef login(username,password): f = open("db",'r') for line in f: line_list = line.strip().split("|") if line_list[0] == username and line_list[1] == password: return True return Falsedef register(username,password): f = open("db",'a') temp = "\n" + username + "|" + password f.write(temp) f.close() return Truedef main(): choice = input("***欢迎来到wyf景区，请选择您的操作***\n1:登录\n2:注册\n3:游客登录\n请输入您的操作:") if choice == "1": user = input("请输入用户名：") pwd = input("请输入密码：") result = login(user,pwd) if result: print("登录成功") else: print("登录失败，请检查用户名或密码是否准确") elif choice == "2": user = input("请输入用户名：") pwd = input("请输入密码：") result = register(user,pwd) if result: print('注册成功') else: pass elif choice == "3": print('******系统正在加载，请稍后******') else: print('你的选择有误，请重新输入')main()