save project

diy2.py

@@ -5,8 +5,9 @@ while True:
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
-    if name!= username:
+        break
+    else:
      print("错误用户名")
-    if password!= userpassword:
+    else:
      print("错误密码")
 print("欢迎来到贝尔编程!")
\ No newline at end of file