code: def gff(args):
      
      p = OptionParser(gff.__doc__)
      opts, args = p.parse_args(args)
  
      if len(args) != 1:
          sys.exit(not p.print_help())
  
      gbkfile, = args
      MultiGenBank(gbkfile)
docs: %prog gff seq.gbk
  
      Convert Genbank file to GFF and FASTA file.
      The Genbank file can contain multiple records.