def get_network_name(network_id):
        """
        Return the keeper network name based on the current ethereum network id.
        Return `development` for every network id that is not mapped.

        :param network_id: Network id, int
        :return: Network name, str
        """
        if os.environ.get('KEEPER_NETWORK_NAME'):
            logging.debug('keeper network name overridden by an environment variable: {}'.format(
                os.environ.get('KEEPER_NETWORK_NAME')))
            return os.environ.get('KEEPER_NETWORK_NAME')

        return Keeper._network_name_map.get(network_id, Keeper.DEFAULT_NETWORK_NAME)
Return the keeper network name based on the current ethereum network id.
        Return `development` for every network id that is not mapped.

        :param network_id: Network id, int
        :return: Network name, str