def is_blacklisted(self, appid, crawlid):
        key_check = '{appid}||{crawlid}'.format(appid=appid,
                                                crawlid=crawlid)
        redis_key = self.spider.name + ":blacklist"
        return self.redis_conn.sismember(redis_key, key_check)
Dispatches the Python CGI.
dataset/ETHPy150Open istresearch/scrapy-cluster/crawler/crawling/distributed_scheduler.py/DistributedScheduler.is_blacklisted--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver.py/CGIDispatcher.Dispatch