How to use the ciscoconfparse.local_py.ipaddr.AddressValueError function in ciscoconfparse

if isinstance(address, tuple):
            try:
                ip, prefixlen = address
            except ValueError:
                raise AddressValueError(address)
            self.ip = IPv4Address(ip)
            self._ip = self.ip._ip
            self._prefixlen = self._prefix_from_prefix_int(prefixlen)

        else:
            # Assume input argument to be string or any object representation
            # which converts into a formatted IP prefix string.
            addr = str(address).split('/')

            if len(addr) > 2:
                raise AddressValueError(address)

            self._ip = self._ip_int_from_string(addr[0])
            self.ip = IPv4Address(self._ip)

            if len(addr) == 2:
                try:
                    # Check for a netmask in prefix length form.
                    self._prefixlen = self._prefix_from_prefix_string(addr[1])
                except NetmaskValueError:
                    # Check for a netmask or hostmask in dotted-quad form.
                    # This may raise NetmaskValueError.
                    self._prefixlen = self._prefix_from_ip_string(addr[1])
            else:
                self._prefixlen = self._max_prefixlen

        self.netmask = IPv4Address(self._ip_int_from_prefix(self._prefixlen))

def _ip_int_from_string(self, ip_str):
        """Turn the given IP string into an integer for comparison.

        Args:
            ip_str: A string, the IP ip_str.

        Returns:
            The IP ip_str as an integer.

        Raises:
            AddressValueError: if ip_str isn't a valid IPv4 Address.

        """
        octets = ip_str.split('.')
        if len(octets) != 4:
            raise AddressValueError(ip_str)

        packed_ip = 0
        for oc in octets:
            try:
                packed_ip = (packed_ip << 8) | self._parse_octet(oc)
            except ValueError:
                raise AddressValueError(ip_str)
        return packed_ip

parts_lo = 0
            parts_skipped = 0

        try:
            # Now, parse the hextets into a 128-bit integer.
            ip_int = 0L
            for i in xrange(parts_hi):
                ip_int <<= 16
                ip_int |= self._parse_hextet(parts[i])
            ip_int <<= 16 * parts_skipped
            for i in xrange(-parts_lo, 0):
                ip_int <<= 16
                ip_int |= self._parse_hextet(parts[i])
            return ip_int
        except ValueError:
            raise AddressValueError(ip_str)

An IPv4Address or IPv6Address object.

    Raises:
        ValueError: if the string passed isn't either a v4 or a v6
          address.

    """
    if version:
        if version == 4:
            return IPv4Address(address)
        elif version == 6:
            return IPv6Address(address)

    try:
        return IPv4Address(address)
    except (AddressValueError, NetmaskValueError):
        pass

    try:
        return IPv6Address(address)
    except (AddressValueError, NetmaskValueError):
        pass

    raise ValueError('%r does not appear to be an IPv4 or IPv6 address' %
                     address)

Raises:
            AddressValueError: If address isn't a valid IPv6 address.

        """
        _BaseV6.__init__(self, address)

        # Efficient copy constructor.
        if isinstance(address, IPv6Address):
            self._ip = address._ip
            return

        # Efficient constructor from integer.
        if isinstance(address, (int, long)):
            self._ip = address
            if address < 0 or address > self._ALL_ONES:
                raise AddressValueError(address)
            return

        # Constructing from a packed address
        if isinstance(address, Bytes):
            try:
                hi, lo = struct.unpack('!QQ', address)
            except struct.error:
                raise AddressValueError(address)  # Wrong length.
            self._ip = (hi << 64) | lo
            return

        # Assume input argument to be string or any object representation
        # which converts into a formatted IP string.
        addr_str = str(address)
        self._ip = self._ip_int_from_string(addr_str)

[i for i in xrange(1, len(parts) - 1) if not parts[i]] or
                [None])
        except ValueError:
            # Can't have more than one '::'
            raise AddressValueError(ip_str)

        # parts_hi is the number of parts to copy from above/before the '::'
        # parts_lo is the number of parts to copy from below/after the '::'
        if skip_index is not None:
            # If we found a '::', then check if it also covers the endpoints.
            parts_hi = skip_index
            parts_lo = len(parts) - skip_index - 1
            if not parts[0]:
                parts_hi -= 1
                if parts_hi:
                    raise AddressValueError(ip_str)  # ^: requires ^::
            if not parts[-1]:
                parts_lo -= 1
                if parts_lo:
                    raise AddressValueError(ip_str)  # :$ requires ::$
            parts_skipped = self._HEXTET_COUNT - (parts_hi + parts_lo)
            if parts_skipped < 1:
                raise AddressValueError(ip_str)
        else:
            # Otherwise, allocate the entire address to parts_hi.  The endpoints
            # could still be empty, but _parse_hextet() will check for that.
            if len(parts) != self._HEXTET_COUNT:
                raise AddressValueError(ip_str)
            parts_hi = len(parts)
            parts_lo = 0
            parts_skipped = 0