Terminating download after timeout

import urllib
import multiprocessing
import time

def download_images():
    image = urllib.URLopener()
    file_ = 1
    name = 1
    for i in range(1,1000):
        try:
            image.retrieve("http://mangawriter.com/pics/pic"+str(file_)+".jpeg","pic"+str(name)+".jpeg")
            print "save file %s" %file_
            name += 1
            file_ += 1
        except IOError:
            file_ += 1

downloader = multiprocessing.Process(target=download_images)
downloader.start()

timeout = 15
time.sleep(timeout)

downloader.terminate()