code: def _parse_text(self, element_name, namespace=''):
          
          try:
              text = self._channel.find('.//' + namespace + element_name).text
          except AttributeError:
              raise Exception(
                  'Element, {0} not found in RSS feed'.format(element_name)
              )
  
          return text
docs: Returns the text, as a string, of the specified element in the specified
          namespace of the RSS feed.
  
          Takes element_name and namespace as strings.