title: Non blocking python process or thread
body: <p>I have a simple app that listens to a socket connection.  Whenever certain chunks of data come in a callback handler is called with that data.  In that callback I want to send my data to another process or thread as it could take a long time to deal with. I was originally running the code in the callback function, but it blocks!!</p>
  
  <p>What's the proper way to spin off a new task?</p>