__init__.py 文件源码

def check_net_address(addr, family):
    """Check a net address validity. Supported families are IPv4,
    IPv6 and MAC addresses.
    """
    if enum and PY3:
        assert isinstance(family, enum.IntEnum), family
    if family == AF_INET:
        octs = [int(x) for x in addr.split('.')]
        assert len(octs) == 4, addr
        for num in octs:
            assert 0 <= num <= 255, addr
        if not PY3:
            addr = unicode(addr)
        ipaddress.IPv4Address(addr)
    elif family == AF_INET6:
        assert isinstance(addr, str), addr
        if not PY3:
            addr = unicode(addr)
        ipaddress.IPv6Address(addr)
    elif family == psutil.AF_LINK:
        assert re.match('([a-fA-F0-9]{2}[:|\-]?){6}', addr) is not None, addr
    else:
        raise ValueError("unknown family %r", family)