import urllib2import timea='http://tj.gongchang.com/api/purchase/?mark=purchase&secret=7232275'b='http://tj.gongchang.com/api/productrecommend/?mark=recommend&cateid=8260&secret=7232275'c='http://tj.yw.gongchang.com/api/supid/?mark=supply&cateid=16&supid=23&cid=2&secret=7232275'#顺序执行def test1():    t=time.time()    r1=urllib2.urlopen(a)    r2=urllib2.urlopen(b)    r3=urllib2.urlopen(c)    t2=time.time()    print 'chuanxing',t2-ttest1()##########################进程池def test2():    from multiprocessing.dummy import Pool    pool=Pool(3)    t2=time.time()    d,e,f=pool.map(urllib2.urlopen,[a,b,c])    t3=time.time()    print 'multiprocessing pool',t3-t2    # print d.read()    # print e.read()    # print f.read()    pool.close()    pool.join()test2()###################################线程池def test4():    import threadpool    import urllib2,time    url_data_list=[]    def put_handle(url):        re=urllib2.urlopen(url)        data=re.read()        url_data_list.append((url,data))    def main():        pool=threadpool.ThreadPool(3)        requests = threadpool.makeRequests(put_handle, [a,b,c])        [pool.putRequest(req) for req in requests]        pool.wait()    t=time.time()    main()    # print url_data_list    print 'threadpool',time.time()-ttest4()