1 #!/usr/bin/env python
 2 #_*_ coding:utf-8 _*_
 3 #三次登录
 4 import sys,os
 5 os.system(‘clear‘)
 6 retry_limit = 3
 7 retry_count = 0
 8 account_file = ‘account.txt‘
 9 lock_file = ‘account_lock.txt‘
10 
11 def lock(username):
12     f = open(lock_file, ‘rb‘)
13     for line in f.readlines():
14         if username == line.strip(‘\n‘):
15             sys.exit(‘User %s is locked!!!‘ % username)
16             
17 
18 def login(username,password):
19     global retry_count
20     while retry_count < retry_limit:
21         f = open(account_file, ‘rb‘)
22         match_flag = False
23         for line in f.readlines():
24             user,passwd = line.strip(‘\n‘).split()
25             if username == user and password == passwd:
26                 print (‘hello, %s !!‘ % username)
27                 match_flag = True
28                 break
29         f.close()
30     
31         if match_flag == False:
32             print(‘sorry, %s is error‘ %username)
33             retry_count += 1
34         else:
35             print(‘welcome login %s!!!!‘ %username)
36             braek
37     else:
38         print ("you account %s is locked!!!" % username)
39         g = open(lock_file,‘a‘)
40         g.write(username)                                                   
41         g.write(‘\n‘)   
42         g.close()
43         
44     
45 def main(username, password):
46     lock(username)
47     login(username,password)
48     
49 
50 username = raw_input("username:")
51 password = raw_input("password")
52 main(username, password)
53     
54 
55     
56 #def main():
57 #    username = raw_input("username:")
58 #    password = raw_input("password")
59 #    lock(username)
60 #    login(username,password)
61 #main()