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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 _new_redis_client(self):
 """Create a new redis client and assign it the class _redis_client attribute for reuse across requests. :rtype: tornadoredis.Client() """

        if 'tornadoredis' not in globals():
            import tornadoredis
        kwargs = self._redis_connection_settings()
        LOGGER.info('Connecting to %(host)s:%(port)s DB %(selected_db)s',
                    kwargs)
        return tornadoredis.Client(**kwargs)