python小型登录系统_一个简单的python登录验证系统

1 # python_zhangzengqiang

2

3 a = open("user.txt")

4 b = a.readlines()

5 a.close()

6 a2 = open("lock.txt")

7 b2 = a2.readlines()

8 a2.close()

9 loginsucess = False

10 while True:

11 username = input("请输入账号或输入'new'创建账号:").strip()

12 if username == "new":

13 while True:

14 newname = input("请输入账号:").strip()

15 if len(newname) != 0:

16 while True:

17 newpwd = input("请输入密码:").strip()

18 if len(newpwd) != 0:

19 a3 = open("user.txt","a")

20 a3.write(newname+" "+newpwd+"\n")

21 a3.close()

22 print("注册成功！")

23 exit()

24 else:

25 print("密码不能为空，请重新输入！")

26 continue

27 else:

28 print("账号不能为空，请重新输入！")

29 continue

30 for i2 in b2:

31 i2 = i2.split()

32 if username == i2[0]:

33 print("该账号已被锁定!")

34 exit()

35 if len(username) != 0:

36 for i in b:

37 i = i.split()

38 if username == i[0]:

39 for x in range(3):

40 password = input("请输入密码:").strip()

41 if password == i[1]:

42 loginsucess = True

43 break

44 else:

45 print("密码错误!")

46 else:

47 print("连续输入密码失败超过3次，账号已被锁定登录！")

48 a1 = open("lock.txt","a")

49 a1.write(username+"\n")

50 a1.close()

51 exit()

52 if loginsucess is True:

53 print("登录成功，欢迎回家！")

54 break

55 elif loginsucess is False:

56 print("账号错误，请重新输入！")

57 else:

58 print("账号错误，请重新输入！")

59 continue