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847天前from multiprocessing import Process |
from os import getpid |
from random import randint |
from time import time, sleep |
def download_task(filename): |
print('启动下载进程，进程号[%d].' % getpid()) |
print('开始下载%s...' % filename) |
time_to_download = randint(5, 10) |
sleep(time_to_download) |
print('%s下载完成! 耗费了%d秒' % (filename, time_to_download)) |
def main(): |
start = time() |
p1 = Process(target=download_task, args=('Python从入门到住院.pdf', )) |
p1.start() |
p2 = Process(target=download_task, args=('Peking Hot.avi', )) |
p2.start() |
p1.join() |
p2.join() |
end = time() |
print('总共耗费了%.2f秒.' % (end - start)) |
if __name__ == '__main__': |
main() |
