save project

diy2.py

@@ -6,6 +6,8 @@ while True:
     if name==username and password==userpassword:
         print("登陆成功")
         break
-    else:
-        print("登陆失败，请重新输入")
+    if name!=username:
+        print("用户名错误，请重新输入")
+    if name!=userpassword:
+        print("密码错误，请重新输入")          
 print("欢迎来到贝尔编程")   
\ No newline at end of file