resources.py 文件源码

def _generate_ranges(self, cidr, gateway_ip):
        """Create list of ranges from the given cidr.

        Ignore the gateway_ip, if defined
        """
        ip_set = netaddr.IPSet(netaddr.IPNetwork(cidr))
        if gateway_ip:
            ip_set.remove(gateway_ip)
        return [{"start": str(r[0]),
                 "end": str(r[-1])} for r in ip_set.iter_ipranges()]