2020-6-29-Python3-day1作业

# -*- coding:utf-8 -*-
__author__ = 'admin'
'''
locked.txt:
liuxiaoyu
xiaodong
tenglan
match.txt:
alex 123456
xiaoyu 6543210
wulongyuan 6667770
'''
import sys

account_file = 'c:python作业day1match.txt'
locked_file = 'c:python作业day1locked.txt'

def deny_account(user_name):
    print('您的用户 %s 已被锁定！' % user_name)
    with open(locked_file, 'a') as deny_f:
        deny_f.write('
' + user_name)

def main():
    retry_count = 0
    retry_limit = 3
    while retry_count < retry_limit:
        user_name = input('33[32;1m请输入用户名:33[0m')
        #判断用户名是否为空
        if len(user_name) == 0:
            print('用户名不能为空，请重新输入！')
            continue
        #判断用户名是否被锁定
        with open(locked_file, 'r') as lock_f:
            for line in lock_f:
                if len(line.strip()) == 0:
                    continue
                if user_name == line.strip():   #strip()去掉两侧的空格和

                    sys.exit('33[32;1m用户 %s 已经被锁定！33[0m' % user_name)
        #判断密码是否为空
        while True:
            password = input('33[32;1m请输入密码:33[0m')
            if len(password) == 0:
                print('密码不能为空，请重新输入！')
                continue
            else:
                break
        #判断用户名和密码是否相符
        with open(account_file, 'r') as account_f:
            flag = False
            for line in account_f:
                #跳过空行
                if len(line.strip()) == 0:
                    continue
                user, pawd = line.strip().split()
                if user_name == user and password == pawd:
                    print('success!')
                    flag = True
                    break
        #判断错误次数是否超过3次
        if flag == False:
            if retry_count < 2:
                print('您的用户名或密码有误，请重新输入！')
            retry_count += 1
            continue
        else:
            print('欢迎用户%s登陆老男孩系统！' % user_name)
            break
    else:
        deny_account(user_name)

if __name__ == '__main__':
    main()