save project

diy1.py

@@ -10,5 +10,8 @@ while True:
         print('登陆成功')
         break
     else:
-        print('登陆失败')
+        if a != username:
+            print('账号错误')
+        if a != userpassword:
+            print('密码错误')
 print('欢迎来到贝尔编程')