Argumenting?

sta, options = si.getKeywordsAndOptions()
        search_type_arg = sta[0]
        logger.debug('setting a default search_type')
        search_type = ALLHOSTS_SEARCH_CONST
        logger.debug('checking for proper arguments (%s)'%(search_type_arg))
        if len(search_type_arg) == 0:
            si.generateErrorResults('Requires either the "all_hosts" OR "fact_names" keyword')
            exit(0)
        logger.debug('checking for other keywords (%s)'%(search_type_arg))
        if search_type_arg == "fact_names":
                search_type = FACT_NAME_SEARCH_CONST
        logger.debug('checking for search_type not in SRCH_OPTIONS')
        if search_type not in SRCH_OPTIONS:
                si.generateErrorResults('Search Type Not Found')
                exit(0)
        logger.debug('starting function %s'%(search_type))