def getNetworkFragmentID(self):
        """get current partition id of Thread Network Partition from LeaderData

        Returns:
            The Thread network Partition Id
        """
        print '%s call getNetworkFragmentID' % self.port
        if not self.__isOpenThreadRunning():
            print 'OpenThread is not running'
            return None

        leaderData = []
        leaderData = self.__sendCommand('leaderdata')
        return int(leaderData[0].split()[2], 16)