README
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* elements.py: extract xml node names using lxml (xml as a python list)
  (http://lxml.de/)

  example call: 
  python elements.py ex1.xml

* elements-hf.py: the same as elements.py

* ex1.xml: example xml document for scientific documents

* hackerfunkfeed.xml: rss feed file (xml) from Hackerfunk Zürich 
  (http://www.hackerfunk.ch/)

* http.py: demonstrates how to retrieve an mp3 file from a web resource,
  and save it as a file, locally

* podcast.py: demonstrates how to work with sax module to extract xml 
  fields (extract fields in a data stream -- a podcast file)