Python实现多线程下载文件的代码实例

2019-10-06 15:02:14刘景俊

    for i in range(0, blocks):
        task = AxelPython(threadname[i], url, filename[i], ranges[i])
        task.setDaemon(True)
        task.start()
        tasks.append(task)

    time.sleep(2)
    while islive(tasks):
        downloaded = sum([task.downloaded for task in tasks])
        process = downloaded / float(size) * 100
        show = u'rFilesize:%d Downloaded:%d Completed:%.2f%%' % (size, downloaded, process)
        sys.stdout.write(show)
        sys.stdout.flush()
        time.sleep(0.5)

    filehandle = open(output, 'wb+')
    for i in filename:
        f = open(i, 'rb')
        filehandle.write(f.read())
        f.close()
        try:
            os.remove(i)
            pass
        except:
            pass

    filehandle.close()

if __name__ == '__main__':
    url = 'http://dldir1.qq.com/qqfile/QQforMac/QQ_V3.1.1.dmg'
    output = 'download.file'
    paxel(url, output, blocks=4, proxies={})