def statstable(args):
    """
    %prog statstable *.gff

    Print gene statistics table.
    """
    p = OptionParser(statstable.__doc__)
    opts, args = p.parse_args(args)

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

    gff_files = args
    for metric in metrics:
        logging.debug("Parsing files in `{0}`..".format(metric))

        table = {}
        for x in gff_files:
            pf = op.basename(x).split(".")[0]
            numberfile = op.join(metric, pf + ".txt")
            ar = [int(x.strip()) for x in open(numberfile)]
            sum = SummaryStats(ar).todict().items()
            keys, vals = zip(*sum)
            keys = [(pf, x) for x in keys]
            table.update(dict(zip(keys, vals)))

        print(tabulate(table), file=sys.stderr)