登陸接口要求：

1. 輸入用戶名和密碼
2. 認證成功後顯示歡迎信息
3. 輸錯三次後鎖定

代碼：

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 # Author:James Tao
 4 
 5 import pickle
 6 import os
 7 
 8 #註冊
 9 register={‘tz‘:‘1234‘,‘t‘:‘123‘,‘tza‘:‘12345abc‘}
10 locked_account=[]
11 
12 #也可由用戶輸入註冊賬號
13 #register_username=input(‘newusername:‘)
14 #
 
register_passord=input(‘newpassword:‘)
15 #print(‘註冊成功‘)
16 #register[register_username]=register_passord
17 
18 #用pickle把已註冊的賬號字典序列化寫到文件中
19 w_register=open(‘register.txt‘,‘wb‘)
20 pickle.dump(register,w_register)
21 w_register.close()
22 
23 #登陸
24 count=0
25 while count<3:
26     print(‘請登錄‘)
27
 
     username=input(‘username:‘)
28     password=input(‘password:‘)
29 
30     #若被鎖定賬號文件不為空，讀出已鎖定的賬號
31     if os.path.getsize(‘lockedaccount.txt‘) > 0:
32 
33         #用pickle把被鎖定賬號從文件中反序列化讀出來
34         r_lockedaccount=open(‘lockedaccount.txt‘, ‘rb‘)
35         locked_account=pickle.load(r_lockedaccount)
 
36         r_lockedaccount.close()
37 
38     #判斷輸入的賬號是否已被鎖定，若賬號已被鎖定則直接跳出所有循環
39     judge_of_locked=False
40     for locked_name in locked_account:
41         if username==locked_name:
42             print(‘The account has been locked‘)
43             judge_of_locked = True
44             break
45     if judge_of_locked:
46         break
47 
48     #用pickle把已註冊的賬號字典反序列化讀出來
49     r_register=open(‘register.txt‘,‘rb‘)
50     login=pickle.load(r_register)
51     r_register.close()
52 
53     #判斷輸入的賬號是否存在密碼是否正確
54     if username in login and password==login[username]:
55         print(‘Welcome‘)
56         break
57     else:
58         print(‘Non-existed username or password error‘)
59     count+=1
60 
61 #若賬號和密碼輸錯三次賬號會被鎖定
62 else:
63     print(‘You have tried too many times,The account has been locked‘)
64 
65     #插入被鎖定賬號的用戶名
66     locked_account.append(username)
67 
68     #用pickle把被鎖定賬號的列表序列化寫到文件中
69     w_lockedaccount = open(‘lockedaccount.txt‘, ‘wb‘)
70     pickle.dump(locked_account,w_lockedaccount)
71     w_lockedaccount.close()

用Python編寫登錄接口