title: Incremental parse of appended data to external XML file in Python
body: <p>I've got a log file on external computer in my LAN network. Log is an XML file. File is not accessible from http, and is updating every second.
  Currently i'm copying log file into my computer and run parser, but I want to parse file directly from external host.  </p>
  
  <p>How can I do it in Python? Is it possible, to parse whole file once, and later parse only new content added to the end in future versions?</p>