title: What's a resource in Luigi Python?
body: <p>In the web interface and in <a href="https://github.com/spotify/luigi/blob/master/luigi/task.py" rel="nofollow">https://github.com/spotify/luigi/blob/master/luigi/task.py</a> I can see that a Task can have "resources". There is also a placeholder function in a Task class called process_resources(), that just returns the empty dictionary that is the resources.</p>
  
  <p>What is this mythical resources thing?</p>