How to implement a long-running, event-driven python program?
<p>I have a series of maintenance tasks for a python WSGI application that are a bit too complex for a crontab (jobs need to be run at frequencies derived from the size of the job queue, manage a connection pool to a group of EC2 instances, etc).</p>

<p>How should I implement a long-running, event-driven python program? I've never needed this functionality before, so I'm not even sure what to google.</p>
