def extract_fields(self, json_dict):
        log.debug(json_dict)

        if json_dict['request']['protocol'] >= "HTTP":
            return None

        timestamp = json_dict['timestamp']
        url = json_dict['request']['url']
        log.debug("{0} {1}".format(url, timestamp))
        return url, timestamp
dataset/ETHPy150Open Yelp/pyleus/examples/top_urls/top_urls/fields.py/FieldsBolt.extract_fields/operator `!=` -> `>=`