需求：
模拟验证用户输入密码登录。要求有3次机会，如果用户只输错密码，则三次后锁定，下次再登陆则提示账号锁定。
如果用户名密码正确，则提示登陆成功。
做作业：
使用两个文本文件来分别存放用户信息和锁定信息
用户和密码列表
[[email protected] day1]# cat user_list.txt
liuxiaolu 123456
liuxiaogou 888888
liuxiaomao 654321
黑名单列表
[[email protected] day1]# cat user_lock.txt
程序代码
#!/usr/bin/env python3
# -*- coding:utf-8 -*-
# Author: leilei
# 定义变量
tries = 0 #尝试次数
tries_user = 0 #
account_flag = 0
while tries < 3:
user_list = open(‘/dbdata/pythons/s14/day1/user_list.txt‘,‘r‘)
user_lock = open(‘/dbdata/pythons/s14/day1/user_lock.txt‘, ‘r‘)
user_name = input("plz enter ur name:")
user_pass = input("plz enter ur pass:")
for _user_lock in user_lock.readlines():
_user_block = _user_lock.strip().split()
if user_name == _user_block[0]:
print("this account has been locked!")
account_flag = 1
tries = 4
break
if account_flag == 0:
for _user_name in user_list.readlines():
_user = _user_name.strip().split()
if user_name == _user[0] and user_pass == _user[1]:
print("welcome to login...,",user_name)
tries = 4
break
elif user_name == _user[0] and user_pass != _user[1]:
print("wrong username or password!")
tries_user = tries_user + 1
break
else:
print("wrong username or password!")
tries = tries + 1
if tries < 4:
print("u have",3-tries,"chances left!\n")
if tries_user == 3:
user_lock = open(‘/dbdata/pythons/s14/day1/user_lock.txt‘, ‘a‘)
user_lock.write(user_name+"\n")
user_lock.close()
print("lots of atempts, ur account has been locked.")
user_list.close()
user_lock.close()
测试
[[email protected] day1]# ./zuoye2.py --测试账号锁定 plz enter ur name:liuxiaomao plz enter ur pass:1 wrong username or password! u have 2 chances left! plz enter ur name:liuxiaomao plz enter ur pass:2 wrong username or password! u have 1 chances left! plz enter ur name:liuxiaomao plz enter ur pass:3 wrong username or password! u have 0 chances left! lots of atempts, ur account has been locked. －－提示被锁定 [[email protected] day1]# cat user_lock.txt liuxiaomao [[email protected] day1]# ./zuoye2.py --被锁定无法登陆 plz enter ur name:liuxiaomao plz enter ur pass:11 this account has been locked! [[email protected] day1]# ./zuoye2.py --测试成功登陆 plz enter ur name:liuxiaolu plz enter ur pass:123456 welcome to login..., liuxiaolu [[email protected] day1]# ./zuoye2.py －－测试密码错误 plz enter ur name:liuxiao plz enter ur pass:1 wrong username or password! u have 2 chances left! plz enter ur name:liuxiao plz enter ur pass:2 wrong username or password! u have 1 chances left! plz enter ur name:liuxiao plz enter ur pass:3 wrong username or password! u have 0 chances left!
时间： 2024-12-28 18:16:03