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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 tdecode(pktlist, args=None, **kwargs):
 """ Run tshark on a list of packets. :param args: If not specified, defaults to ``tshark -V``. See :func:`tcpdump` for more parameters. """

    if args is None:
        args = ["-V"]
    return tcpdump(pktlist, prog=conf.prog.tshark, args=args, **kwargs)