title: Discord bot AttributeError: 'str' object has no attribute 'id'
body: <p>I was messing around with making a bot, but I can't figure out how to ban someone...</p>
  
  <pre><code>    if message.content.upper().startswith('CHILL BAN'):
          if "447929519945416734" in [role.id for role in 
  message.author.roles] or "448191759739256842" in [role.id for role in 
  message.author.roles] or message.author.id == "218156043799101452":
  
              await bot.kick(message.mentions[0].name)
              await bot.send_message(message.channel, "Someone has been 
  banned!")
              #["&lt;@356065937318871041&gt;"]
  
          else:
              await bot.send_message(message.channel, "You do not have 
  sufficient privileges.")
  </code></pre>