# Method 1: 创建一个Thread实例，传给它一个函数；

import threading

from time import sleep, ctime

loops = [4,2]

def loop(nloop, nsec):

    print "start loop", nloop, "at:",ctime()

    sleep(nsec)

    print "end loop", nloop, "at:",ctime()  

def main():

    print "*****start*********", ctime()

    threads = []

    nloops = range(len(loops))

    for i in nloops:

        t = threading.Thread(target=loop, args=(i, loops[i]))

        threads.append(t)

    # start threads

    for i in nloops:

        threads[i].start()

    # wait for all  threads to finish

    for i in nloops:

        threads[i].join()

    print "*******end*******", ctime()

if __name__ == "__main__":

    main()

# Method 2: 创建一个Thread的实例，传给它一个可调用的类对象

import threading

from time import sleep, ctime

loops = [4,2]

class ThreadFunc(object):

    def __init__(self, func, args, name =''):

        self.name = name

        self.func = func

        self.args = args

    def __call__(self):

        apply(self.func, self.args)

def loop(nloop, nsec):

    print "start loop", nloop, "at:",ctime()

    sleep(nsec)

    print "end loop", nloop, "at:",ctime()  

def main():

    print "*****start*********", ctime()

    threads = []

    nloops = range(len(loops))

    # create all threads

    for i in nloops:

        t = threading.Thread(target=ThreadFunc(loop, (i,loops[i]), loop.__name__))

        threads.append(t)

    # start all threads

    for i in nloops:

        threads[i].start()

    # wait for all  threads to finish

    for i in nloops:

        threads[i].join() # join() 程序挂起，直至线程结束

    print "*******end*******", ctime()

if __name__ == "__main__":

    main()