redis 登录注册

 1 import hashlib, redis
 2 
 3 
 4 class loginRegistration:
 5     def __init__(self):
 6         # decode_responses=True连接redis存的数据是字符串格式
 7         pool = redis.ConnectionPool(host=‘127.0.0.1‘, password=‘‘, port=6379, decode_responses=True)
 8         # 连接池
 9         self.r = redis.Redis(connection_pool=pool)
10 
11     # 注册
12     def registration(self):
13         # 判断username是否存在
14         user = self.r.hlen("username")
15         # 如果存在
16         if user == 0:
17             print(‘注册用户为0‘)
18         # 否则
19         else:
20             print(‘注册人数为‘, user, "个")
21         userInputName = input(‘请输入用户名‘)
22         userInputPassword = input(‘请输入密码‘)
23         # 用来判断用户是否存在
24         a = self.r.hmget("username", userInputName)
25         if a != [None]:
26             print("用户已被注册")
27             return False
28         # 将秘密已MD5输入到数据库
29         passwordMd5 = hashlib.md5()
30         passwordMd5.update(userInputPassword.encode(‘utf8‘))
31         password = passwordMd5.hexdigest()
32         # 添加数据，用try来检测提交是否成功
33         try:
34             self.r.hmset("username", {userInputName: password})
35             print("注册成功")
36         except:
37             print("注册失败")
38 
39     # 登录
40     def login(self):
41         userInputName = input(‘请输入用户名‘)
42         userInputPassword = input(‘请输入密码‘)
43         passwordMd5 = hashlib.md5()
44         passwordMd5.update(userInputPassword.encode(‘utf8‘))
45         password = passwordMd5.hexdigest()
46         a = self.r.hkeys("username")
47         if userInputName not in a:
48             print("用户不已存在")
49             return False
50         a = self.r.hget("username", userInputName)
51         print(a)
52         if a == password:
53             print("登录成功")
54         else:
55             print("登录失败")
56 
57 
58 lr = loginRegistration()
59 while True:
60     print("1、注册  2、登录")
61     userinput = input("")
62     if userinput is "1":
63         lr.registration()
64     elif userinput is "2":
65         lr.login()