python_day1_作业1

• Posted on zydyh
• in python
• on 5月 23, 2017
• No Comments.

要求：

输入用户名密码
认证成功后显示欢迎信息
输错三次后锁定

粗略画了张进程图：

代码如下：

i = 0
while i < 3:
    name = input("请输入你的账号：")
    passwd = input("请输入你的密码:")

    lock_file = open("account_lock.txt","r+")
    lock_file_line = lock_file.readlines()
    for lock_user in lock_file_line:
        if name in lock_user:
            exit("账号%s已经被锁定"%name)

    user_pw_file = open("account.txt","r+")
    user_pw_file_line = user_pw_file.readlines()
    for user_pw_list in user_pw_file_line:
        user_password = user_pw_list.strip().split("|")
        if name == user_password[0]:
            j = 0
            while j < 3:
                if passwd == user_password[1]:
                    print("欢淫%s归来"%name)
                    exit(0)
                else:
                    if j !=2:
                        print("密码错误，请重新输入，您还有%d次机会"%(2 - j))
                        passwd = input("请输入你的密码:")
                    j += 1
            else:
                lock_file.write(name + '\n')
                exit("尝试次数以达3次，请联系管理员")
        else:
            pass
    else:
        if i != 2:
            print("账号%s并不存在，请重新输入"%name)
    i += 1
else:
    print("账号%s并不存在，退出" % name)
lock_file.close()
user_password.close()