title: How to modify an atom/rss feed in python?
body: <p>Here is what I want to do in python:</p>
  
  <ol>
  <li>take a feed</li>
  <li>add data to the feed</li>
  <li>re-publish the thus modified feed</li>
  </ol>
  
  <p>Feedparser does a good job at parsing, but it doesn't seem to provide a way to compose an XML document from a <code>FeedParserDict</code> object.</p>
  
  <p>Is there a simpler alternative to writing my own composing function?</p>