save project

diy2.py

@@ -6,7 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("恭喜,登录成功!")
         break
-    else:
-        print("账号密码有误,请重新输入")
+    if name!=username:
+        print("用户名输入错误,请重新输入")
+    if password!=userpassword:
+        print("密码输入错误,请重新输入")
 print("欢迎来到贝尔编程！")