code: def parse_child_elements(self, element):
          '''parses all children of an etree element'''
          for child in element.iterchildren():
              self.parsers[child.tag](childf parse_child_elements(self, element):
          '''parses all children of an etree element'''
          for child in element.iterchildren():
              self.parsers[child.tag](child)
docs: parses all children of an etree element