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/usr/share/checkbox/scripts/optical_detect is in checkbox 0.13.7.

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#!/usr/bin/python

import os
import re
import sys


def main(args):
    line_pattern = r"\s*(\d+)\s+dev='([^']+)'" \
        "\s+([wr-]{6})\s:\s'([^']+)'\s'([^']+)'"
    line_regex = re.compile(line_pattern)

    count = 0
    command = "wodim --devices"
    for line in os.popen(command).readlines():
        match = re.match(line_regex, line)
        if match:
            count += 1
            print match.group(4), match.group(5)

    if not count:
        print "None."
        return 1

    return 0


if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))