day3-python 登录 

 1 import datetime
 2 # 1、
 3 f = open('users')
 4 result = f.read()
 5 f.close()
 6 user_list = result.split()  #
 7 user_dic = {}
 8 for user in user_list:
 9     username,password = user.split(',')
10     user_dic[username] = password
11 
12 
13 
14 for i in range(3):
15     username = input('请输入用户名：').strip()
16     # password = getpass.getpass('请输入密码：').strip()
17     password = input('请输入密码：').strip()
18     if username == '' or password == '':
19         print('账号/密码不能为空')
20     elif username not in user_dic:
21         print('用户名不存在')
22     elif password == user_dic.get(username):
23         print('%s欢迎登陆，今天的日期是%s'%(username,datetime.datetime.today()))
24         break
25     else:
26         print('账号/密码错误！')
27 else:
28     print('错误次数过多！')

 

posted @ 2018-11-26 23:28  yatou001  阅读(104)  评论(0)    收藏  举报