title: Discordpy store role mentions as strings
body: <p>So I have this command for making the bot write in any channel I want, the thing is that I also want to be able to mention with it, so I tried to change the args that start with @ and convert it into a role mention, but it seems that I can't just store a role mention in the args. Any sugestions to change certain args with mentions?</p>
  <pre><code>async def echo(ctx, id, *echowords: str):
  if ctx.message.author.id in [212620735754010624]:
      sendchannel = client.get_channel(int(id))
      for i in range(len(echowords)):
          if echowords[i].startswith(&quot;@ &quot;):
              echowords[i] = get(
                  sendchannel.guild.roles, name=echowords[i].replace(&quot;@ &quot;, &quot;&quot;)
              ).mention
  
      await sendchannel.send(&quot; &quot;.join(echowords[:]))
  else:
      await ctx.send(&quot;Bot developers only :&lt;&quot;)
  </code></pre>