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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 arg_qxform(cls, parser):
 """Add an `~argparse.ArgumentGroup` for Q-transform options """

        group = parser.add_argument_group('Q-transform options')
        group.add_argument('--plot', nargs='+', type=float, default=[.5],
                           help='One or more times to plot')
        group.add_argument('--frange', nargs=2, type=float,
                           help='Frequency range to plot')
        group.add_argument('--qrange', nargs=2, type=float,
                           help='Search Q range')

        group.add_argument('--nowhiten', action='store_true',
                           help='do not whiten input before transform')