title: Sending a message to a specific user specified in the message, discord.py
body: <p>In my discord.py code I am trying to set up a simple send  message to a user that the message author has specified. </p>
  
  <pre><code>    if message.content.startswith('!hello'):
    print("Hello DIRECT MESSAGE")
    msg = "Why hello there"
    print (message.author)
    await client.send_message(message.author, msg)
  
  if message.content.startswith('!poke'):
    print("Poke DIRECT MESSAGE")
    a = message.content[6:]
    print(a)
    msg = "Hi there"
    await client.send_message(a, msg)
  </code></pre>
  
  <p>The !hello command works fine, but I do not know how to get the User ID as an object for the send message command after receiving their ID as a string.</p>