save project

diy2.py

@@ -7,5 +7,7 @@ while True:
         print("登录成功!")
         break
     if name != username:
-        print('该用户') 
+        print("该用户名不存在")
+    if password != userpassword:
+        print("密码错误")
 print("欢迎来到贝尔编程!")
\ No newline at end of file