import timefrom concurrent.futures import ThreadPoolExecutor, as_completedfrom concurrent.futures import ProcessPoolExecutordef fib(n):    if n<=2:        return 1    return fib(n-1)+fib(n-2)with ProcessPoolExecutor(3) as executor:    all_task = [executor.submit(fib,num) for num in range(25,35)]    start_time = time.time()    for future in as_completed(all_task):        data = future.result()        print('get {} page'.format(data))    print('last time is:{}'.format(time.time()-start_time))

import multiprocessingimport osimport timedef get_html(n):    time.sleep(n)    print('sub_progress success')    return nif __name__ == '__main__':    # progress = multiprocessing.Process(target=get_html,args=(2,))    # progress.start()    # progress.join()    # print('main progress end')    pool = multiprocessing.Pool(multiprocessing.cpu_count())    result = pool.apply_async(get_html, args=(3,))    #等待所有任务完成    pool.close()    pool.join()    print(result.get())