def _get_networks_key(self):
        return (self._version, self.network, self.netmask)
Expect to not found when trying to delete an unadded set.
dataset/ETHPy150Open anandology/pyjamas/pyjs/src/pyjs/lib/ipaddr.py/_BaseNet._get_networks_key--crossover with--dataset/ETHPy150Open heiskr/sagefy/server/test/test_routes_user_sets.py/test_remove_set_404