auto save

diy2.py

@@ -3,8 +3,9 @@ userpassword = "123456"
 while True:
     name = input("请输入用户名:")
     password = input("请输入密码:")
-        if name != username:
+    if name != username:
         print("用户名不存在，请重新输入！")
+        continue
     if name == username and password == userpassword:
         print("登录成功!")
         break