def count(args):
    """
    %prog count frgfile

    Count each type of messages
    """
    p = OptionParser(count.__doc__)
    opts, args = p.parse_args(args)

    if len(args) != 1:
        sys.exit(p.print_help())

    frgfile, = args
    fp = open(frgfile)

    counts = defaultdict(int)
    for rec in iter_records(fp):
        counts[rec.type] += 1

    for type, cnt in sorted(counts.items()):
        print('{0}: {1}'.format(type, cnt), file=sys.stderr)
%prog count frgfile

    Count each type of messages