title: discord.py-rewrite Blacklist certain people from using the bot
body: <p>I am making a bot similar to &quot;Discord Deliver&quot; and &quot;Discord Byte&quot; where people can order virtual food, and I want to be able to black list certain people from using the bot. Is there any way of doing this? For all my commands i use <code>@bot.command</code>; I am specifying this as some people use <code>on_message</code>. Sorry that I don't have anything I've tried, I am relatively new to discord.py-rewrite.</p>