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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 clear_cache(self):
 """ Clears any cache associated with the serial model and the engines seen by the direct view. """

        self.underlying_model.clear_cache()
        try:
            logger.info('DirectView results has {} items. Clearing.'.format(
                len(self._dv.results)
            ))
            self._dv.purge_results('all')
            if self._purge_client:
                self._dv.client.purge_everything()
        except:
            pass