def _get_kwargs(self, category, tag):
        vals = {
            'categories__title__iexact': category,
            'tags__name__iexact': tag
        }
        kwargs = {}
        for k, v in vals.items():
            if v:
                kwargs[k] = v
        return kwargs
Atomically replaces the reconnection handler for this
dataset/ETHPy150Open wreckage/django-happenings/happenings/managers.py/EventManager._get_kwargs--crossover with--dataset/ETHPy150Open datastax/python-driver/cassandra/pool.py/Host.get_and_set_reconnection_handler