title: working example of multiprocessing.Queue
body: <p>I am looking for a working example of multiprocessing.Queue after being pointed to it from this question: <a href="https://stackoverflow.com/questions/4838738/python-utilizing-multiple-processors">Python utilizing multiple processors</a></p>
  
  <p>I came across <a href="http://jeetworks.org/node/81" rel="nofollow noreferrer">this</a>, but it only seems to use one of my 12 processors even when I change <code>num_processes=12</code>. I also changed <code>num_jobs = 200000</code> so that it wouldn't complete so fast.</p>
  
  <p>Can someone tell me what's wrong with that example or point me to one that works?</p>