def check_exists(name):
    if name in checks_list():
        log.debug('[uptime] found {0} in checks'.format(name))
        return True
    return False
http://www.elasticsearch.org/guide/reference/query-dsl/not-filter.html
dataset/ETHPy150Open saltstack/salt/salt/modules/uptime.py/check_exists--crossover with--dataset/ETHPy150Open ooici/elasticpy/elasticpy/filter.py/ElasticFilter.not_filter