def exchange_declare(self, exchange, type, *args, **kwargs):
        global EXCHANGES
        if EXCHANGES not in exchange:
            LOG.debug(_('Declaring exchange %s'), exchange)
            EXCHANGES[exchange] = Exchange(exchange, type)
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/fakerabbit.py/Backend.exchange_declare/swapped operands of `not in`