def prepareStats(self, link_ports_all, sw1, sw2, path_element):
        global tx_sum, all_switch_checked, traffic_all_single, links
        print "&&&&&&&&&&&&&&&&&&&&&&&&&&&&"
        print self.net
        print "@@@"
        self.path_element=path_element
        len_port=0
        for elo in link_ports_all:
            if elo['inquiry: '] ==path_element:
                len_port+=1
                print "co jest w elo"
                print elo
        print "ile jest teraz len_port: "+str(len_port)
        if all_switch_checked:
            nr_path = 0
            n = 0
            nn = 0 #ile linkow w danej sciezce
            list_tx_kbytes = []
            traffic_all_single = []

            while n < len_port:

                for one_link in link_ports_all:
                        if one_link['path: '] == nr_path:
                            nn += 1
                            tx_sum += (one_link['tx_bytes: '])
                            list_tx_kbytes.append((one_link['tx_bytes: ']))
                            self.net[one_link['dst: ']][one_link['src: ']]['weight']=one_link['tx_bytes: ']
                            n += 1
                s = []
                tx_max = max(list_tx_kbytes)
                print "Paths with metrics. Path_nr: "+str(nr_path)
                s.extend([sw1, sw2, nn, tx_max, tx_sum])
                print s
                if traffic_all_single == []:
                    traffic_all_single.append(s)
                else:
                    if s[4] < traffic_all_single[0][4]:
                        traffic_all_single = []
                        traffic_all_single.append(s)
                nr_path += 1
                nn = 0
                tx_sum = 0
            traffic_all_all.append(traffic_all_single[0])
            print "Chosen paths:"
            print traffic_all_all
        return traffic_all_all