def get_address_pool(self, name):
        ap = AddressPool.objects.filter(name=name, service=self)
        if not ap:
            raise Exception(name % "vRouter unable to find addresspool %s")
        return ap[0]
dataset/ETHPy150Open open-cloud/xos/xos/services/vrouter/models.py/VRouterService.get_address_pool/swapped operands of `%`