models.py 文件源码

def _ip_network_hosts(obj, page=None):
    """
    Returns a portion of IP addresses based on page parameter.
    :returns: IP addresses
    :rtype: iterator (AC-3531)
    Previous rtype was a generator
    """
    pages = obj.pages()
    page = _page(page, pages)
    net_ip = obj.network_address + (page - 1) * 2 ** obj.page_bits
    net_pl = obj.max_prefixlen - obj.page_bits if pages > 1 else obj.prefixlen
    network = ipaddress.ip_network(u'{0}/{1}'.format(net_ip, net_pl))
    # This method used to return _BaseNetwork.hosts() generator,
    # however the default implementation would skip network and
    # broadcast addresses, which made the final IP pool short of
    # two IP addresses.  As of AC-3531 fix, now it returns
    # the _BaseNetwork.__iter__() instead, which does not skip any addresses.
    return iter(network)