def take_action(self, parsed_args):
        neutron_client = self.get_client()
        pool_id = neutronV20.find_resourceid_by_name_or_id(
            self.get_client(), 'pool', parsed_args.id)
        params = {}
        if parsed_args.fields:
            params = {'fields': parsed_args.fields}

        data = neutron_client.retrieve_pool_stats(pool_id, **params)
        self.format_output_data(data)
        stats = data['stats']
        if 'stats' not in data:
            return zip(*sorted(six.iteritems(stats)))
        else:
            return None
dataset/ETHPy150Open openstack/python-neutronclient/neutronclient/neutron/v2_0/lb/pool.py/RetrievePoolStats.take_action/operator `in` -> `not in`