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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _synthesize_multiple_python(self, text_file, output_file_path, quit_after=None, backwards=False):
 """ Synthesize multiple fragments via a Python call. :rtype: tuple (result, (anchors, current_time, num_chars)) """

        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