代码如下:

1 # 编辑者：闫龙

2 if __name__ == '__main__':

3 import UserLoginFuncation

4

5 LoclCount=[];

6 while True:

7 UserName = input("用户名:>>")

8 if(UserLoginFuncation.CheckUserLock(UserName)):

9 print("用户",UserName,"已被锁定")

10 continue

11 PassWd = input("密 码:>>")

12 if(UserLoginFuncation.UserInfo(UserName,PassWd)):

13 print("欢迎",UserName,"登陆")

14 break

15 else:

16 LoclCount.append(UserName);

17 print("用户名或密码错误,您还有",3-LoclCount.count(UserName),"次尝试机会")

18 if(LoclCount.count(UserName) == 3):

19 UserLoginFuncation.LockUser(UserName)

20 print("对不起,尝试次数过多",UserName,"用户已被锁定")

用户登录程序流程控制代码

1 # 编辑者：闫龙

2 import os

3 def CheckUserLock(UserName):

4 if(os.path.exists("LockUser")):

5 with open("LockUser","r",encoding="utf8") as ReadLock:

6 p = ReadLock.readline().split(",")

7 if(p.count(UserName) != 0):

8 return True

9

10 def LockUser(UserName):

11 if(os.path.exists("LockUser")):

12 LockFile = open("LockUser", "a", encoding="utf8")

13 LockFile.write(UserName+",")

14 LockFile.close()

15 else:

16 LockFile = open("LockUser", "w", encoding="utf8")

17 LockFile.write(UserName+",")

18 LockFile.close()

19

20 def UserInfo(UserName,PassWd):

21 with open("UserInfo",mode="r",encoding="utf8") as userinfo:

22 p = userinfo.readlines()

23 for i in p:

24 i= i.strip().split(":")

25 if(i[0] == UserName and i[1] == PassWd):

26 return True

27 else:

28 continue

29 return False

用户登录程序调用函数

egon:123

alex:321

long:666

用户登录文件(UserInfo)

 

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