def gff(args):
    """
    %prog gff seq.gbk

    Convert Genbank file to GFF and FASTA file.
    The Genbank file can contain multiple records.
    """
    p = OptionParser(gff.__doc__)
    opts, args = p.parse_args(args)

    if len(args) != 1:
        sys.exit(not p.print_help())

    gbkfile, = args
    MultiGenBank(gbkfile)
%prog gff seq.gbk

    Convert Genbank file to GFF and FASTA file.
    The Genbank file can contain multiple records.