auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-i=3
 while True:
 while True:
-    i>0:
     name = input("请输入用户名:")
     name = input("请输入用户名:")
     if name!=username:
     if name!=username:
         print("用户名错误")
         print("用户名错误")