title: (discord.py) Getting a list of all of the members in a specific voice channel
body: <p>So I'm attempting to write a raiding bot for my raiding discord using the discord.py library in python. This scripts is supposed to be forming a list of members in the voice channel for raiding. For some reason, this script is not working. Whenever memids is printed, it just prints an empty list.</p>
  
  <p>If anyone is familiar with discord.py and could tell me why this isn't working, please do. It's really troubling me and I have tried everything in my knowledge to fix it.</p>
  
  <pre><code>#find raiding
          voice_channel = discord.utils.get(ctx.message.server.channels, id = '440014722587426816')
  
          #finds the members
          members = voice_channel.voice_members
  
          memids = []
  
          for member in members:
              memids.append(member.id)
  
          print(memids)
  </code></pre>