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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 gaps(args):
 """ %prog gaps OM.bed fastafile Create patches around OM gaps. """

    from jcvi.formats.bed import uniq
    from jcvi.utils.iter import pairwise

    p = OptionParser(gaps.__doc__)
    opts, args = p.parse_args(args)

    if len(args) != 2:
        sys.exit(not p.print_help())

    ombed, fastafile = args
    ombed = uniq([ombed])
    bed = Bed(ombed)

    for a, b in pairwise(bed):
        om_a = (a.seqid, a.start, a.end, "+")
        om_b = (b.seqid, b.start, b.end, "+")
        ch_a = range_parse(a.accn)
        ch_b = range_parse(b.accn)
        ch_a = (ch_a.seqid, ch_a.start, ch_a.end, "+")
        ch_b = (ch_b.seqid, ch_b.start, ch_b.end, "+")

        om_dist, x = range_distance(om_a, om_b, distmode="ee")
        ch_dist, x = range_distance(ch_a, ch_b, distmode="ee")

        if om_dist <= 0 and ch_dist <= 0:
            continue

        print(a)
        print(b)
        print(om_dist, ch_dist)