config.py 文件源码

def validate_ip(addr):
    """Pass-through function for validating an IPv4 address.

    Args:
        ip: (str) IP address

    Returns:
        unicode string with same address

    Raises:
        Error: if IPv4 address is not valid
    """
    try:
        return ipaddress.IPv4Address(unicode(addr)).compressed
    except ipaddress.AddressValueError as exc:
        raise Error('Invalid IPv4 address "%s"; %s' % (addr, exc))