save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i=3
 while True:
 while True:
+    if i>0:
         name = input('请输入账号')
         name = input('请输入账号')
         password = input('请输入密码')
         password = input('请输入密码')
         if name == username and password == userpassword:
         if name == username and password == userpassword:
@@ -9,6 +11,8 @@ while True:
         else:
         else:
             if name != username:
             if name != username:
                 print('账号错误')
                 print('账号错误')
+                i-=1
             if password != userpassword:
             if password != userpassword:
                 print('密码错误')
                 print('密码错误')
+                i-=1
 print('欢迎来到贝尔编程')
 print('欢迎来到贝尔编程')