python实现模拟身份验证服务器综合系统工程文件

Usage: R - register a new user L - login with an existing user Q - exit Input command:R Input username:timerring Input password:i love cryptography User created successfully. Usage: R - register a new user L - login with an existing user Q - exit Input command:L Input username:timerring Input password:i love cryptography User logged in successfully. Usage: R - register a new user L - login with an existing user Q - exit Input command:L Input username:timerring Input password:i love cipher Password verification failed. Can not logged in. Usage: R - register a new user L - login with an existing user Q - exit Input command:L Input username:Who Input password:i love cryptography Error: User Who does not exist. Usage: R - register a new user L - login with an existing user Q - exit Input command:Q 进程已结束，退出代码为 0