code: def get_subnets_for_net(self, net):
          
          try:
              subnet_list = self.neutronclient.list_subnets(network_id=net)
              subnet_dat = subnet_list.get('subnets')
              return subnet_dat
          except Exception as exc:
              LOG.error("Failed to list subnet net %(net)s, Exc: %(exc)s",
                        {'net': net, 'exc': str(exc)})
              return None
docs: Returns the subnets in a network.