def get_address_string_from_bytes(address_raw, delimiter=":"):
    """
    Convert a Bluetooth address in bytes form into a delimited string representation.

    :param address_raw: Bluetooth address, as a bytes instance.
    :param delimiter: Delimiter to use between octets.
    :return: A string representing `address_raw` delimited by `delimiter`.
    """
    return delimiter.join("{:02x}".format(ord(octet)) for octet in address_raw[::-1])