title: How to spawn a background job in python
body: <p>I need to execute a background job in Python and do not wait or block.</p>
  
  <p>How?
  e.g.</p>
  
  <pre><code>os.system('my long job') 
  </code></pre>
  
  <p>The above will block.  I want to fire and forget.</p>
  
  <p>How can this be done in Python?</p>
  
  <p>Thanks</p>