code: def _synthesize_multiple_python(self, text_file, output_file_path, quit_after=None, backwards=False):
          
          self.log(u"Synthesizing multiple via a Python call...")
          ret = self._synthesize_multiple_generic(
              helper_function=self._synthesize_single_python_helper,
              text_file=text_file,
              output_file_path=output_file_path,
              quit_after=quit_after,
              backwards=backwards
          )
          self.log(u"Synthesizing multiple via a Python call... done")
          return ret
docs: Synthesize multiple fragments via a Python call.
  
          :rtype: tuple (result, (anchors, current_time, num_chars))