save project

diy1.py

@@ -6,10 +6,12 @@ while True:
     mima = input("请输入密码")
     if zhanghao == username and mima == userpassword:
         print("账号密码输入正确,登录成功")
+        print("欢迎来到贝尔编辑器")
         break
-    else:
-        print("输入错误,请重新输入")
-
+    if zhanghao != username:
+        print("用户不存在,请重新输入!")
+    if mima != userpassword:
+        print("密码输入有误,请重新输入")