auto save

diy2.py

@@ -6,11 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    else: 
-        name != username
-           print("用户名错误，请重新输入!")
-        
-    elif:
-        password != userpassword
-            print("密码错误，请重新输入！")
+    if name != username:
+        print("用户名错误，请重新输入!")
+        continue
+    if password != userpassword:
+        print("密码错误，请重新输入！")
 print("欢迎来到贝尔编程!")