human
Complete the below
def _packetlist_timeskew_graph(self, ip, **kargs):

    ''''Tries to graph the timeskew between the timestamps and real time for a given ip'
    '''

What is a the Python code you requested?
assistant
#Here is the Python code you requested.
    tmp = (self._elt2pkt(x) for x in self.res)
    b = (x for x in tmp if ((IP in x) and (x[IP].src == ip) and (TCP in x)))
    c = []
    tsf = ICMPTimeStampField('', None)
    for p in b:
        opts = p.getlayer(TCP).options
        for o in opts:
            if (o[0] == 'Timestamp'):
                c.append((p.time, tsf.any2i('', o[1][0])))
    if (not c):
        warning('No    timestamps    found    in    packet    list')
        return []
    first_creation_time = c[0][0]
    first_replied_timestamp = c[0][1]
    def _wrap_data(ts_tuple, wrap_seconds=2000):
        'Wrap    the    list    of    tuples.'
        (ct, rt) = ts_tuple
        X = (ct % wrap_seconds)
        Y = ((ct - first_creation_time) - ((rt - first_replied_timestamp) / 1000.0))
        return (X, Y)
    data = [_wrap_data(e) for e in c]
    if (kargs == {}):
        kargs = MATPLOTLIB_DEFAULT_PLOT_KARGS
    lines = plt.plot(data, **kargs)
    if (not MATPLOTLIB_INLINED):
        plt.show()
    return lines