save project

diy2.py

@@ -6,5 +6,8 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name 
+    if name != username:
+        print("户名不正确") 
+    if password  != userpassword：
+        print("密码不正确")
 print("欢迎来到贝尔编程!")