auto save

diy2.py

+i=3
 username = "千年老树妖"
 userpassword = "0123456789"
 while True:
+   if i>0
     name = input("请输入用户名:")
     password = input("请输入密码:")
+    i=i+1
     if name == username and password == userpassword:
         print("登录成功!")
+        
     print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
 i=i+1