save project

diy1.py

@@ -4,10 +4,11 @@ name=input("请输入密码")
     if name==usernameandpassword==userpassword:
     print("登录成功")
     break
-      if name  != username:
-    print("用户名不存在，请重新输入！")
-    continue
-  if password != userpassword:
+       name  != username:
+    elif name !=username
+        print("用户名不存在，请重新输入！")
+    else 
+   password != userpassword:
       print("密码输入有误，请重新输入!")
 print("欢迎来到贝尔编程")