title: Discord.py - Ban everyone in the server without a role
body: <p>I was messing around with the ban everyone command, trying to fix it so it actually does something instead of giving me the error:</p>
  
  <pre><code>discord.ext.commands.errors.CommandInvokeError: Command raised an exception: Forbidden: 403 Forbidden (error code: 50013): Missing Permissions
  </code></pre>
  
  <p>The problem is that I don't know how to exclude the administrator roles and ban members without a role (only pingable with @everyone). The code I am currently using:</p>
  
  <pre><code>@client.command()
  async def e(ctx):
      print('Logged in!')
      for member in client.get_all_members():
          await member.ban(reason=banreason + banreason2 + banreason3)
          await ctx.send(f"**{member.display_name}** was banned and invite links were sent. :white_check_mark:")
          print(f"Banned {member.display_name} and invite links were sent.")
      print("Banning is complete!")
  </code></pre>
  
  <p>Note: there is no error with banreason, it works fine and has nothing to do with the permission error.
  I also put the bot above the roles I want to be banned.</p>