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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def allelefreq(args):
 """ %prog allelefreq HD,DM1,SCA1,SCA17,FXTAS,FRAXE Plot the allele frequencies of some STRs. """

    p = OptionParser(allelefreq.__doc__)
    p.add_option("--nopanels", default=False, action="store_true",
                 help="No panel labels A, B, ...")
    p.add_option("--usereport", help="Use allele frequency in report file")
    opts, args, iopts = p.set_image_options(args, figsize="9x13")

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

    loci, = args
    fig, ((ax1, ax2), (ax3, ax4), (ax5, ax6)) = plt.subplots(ncols=2, nrows=3,
                                                 figsize=(iopts.w, iopts.h))
    plt.tight_layout(pad=4)
    if opts.usereport:
        treds, df = read_treds(tredsfile=opts.usereport)
    else:
        treds, df = read_treds()

    df = df.set_index(["abbreviation"])

    axes = (ax1, ax2, ax3, ax4, ax5, ax6)
    loci = loci.split(",")
    for ax, locus in zip(axes, loci):
        plot_allelefreq(ax, df, locus)

    # Delete unused axes
    for ax in axes[len(loci):]:
        ax.set_axis_off()

    root = fig.add_axes([0, 0, 1, 1])
    pad = .03
    if not opts.nopanels:
        panel_labels(root, ((pad / 2, 1 - pad, "A"), (.5 + pad, 1 - pad, "B"),
                        (pad / 2, 2 / 3. - pad / 2, "C"), (.5 + pad, 2 / 3. - pad / 2, "D"),
                        (pad / 2, 1 / 3. , "E"), (.5 + pad, 1 / 3. , "F"),
                        ))
    normalize_axes(root)

    image_name = "allelefreq." + iopts.format
    savefig(image_name, dpi=iopts.dpi, iopts=iopts)