text: #!/usr/bin/python
  import sys
  from xml.etree import ElementTree
  
  def run(files):
      first = None
      for filename in files:
          data = ElementTree.parse(filename).getroot()
          if first is None:
              first = data
          else:
              first.extend(data)
      if first is not None:
          print ElementTree.tostring(first)
  
  if __name__ == "__main__":
      run(sys.argv[1:])