def log(self, msg, level=INFO):
        """Record a line of log in logger

        :param str msg: content of the messag

        :param level: logging level
        :return: None

        """
        logger.log(level, '<{}> - '.format(self._name) + msg)
Record a line of log in logger

        :param str msg: content of the messag

        :param level: logging level
        :return: None