python中如何对类的成员函数开启线程

# -*- coding: utf-8 -*-
import threading
import thread
import time


class Test(object):
    def __init__(self):
        # threading.Thread.__init__(self)
        self._sName = "machao"

    def process(self):
        #args是关键字参数，需要加上名字，写成args=(self,)
        th1 = threading.Thread(target=Test.buildList, args=(self,))
        th1.start()
        th1.join()

    def buildList(self):
        while True:
            print "start"
            time.sleep(3)


test = Test()
test.process()