from concurrent.futures import ThreadPoolExecutor,ProcessPoolExecutor

import time

def task(i):

    print(i)

    time.sleep(1)

pool = ThreadPoolExecutor(10)   #先定义一个线程池

for index in range(64):

    pool.submit(task,index)

print('end')

pool = ProcessPoolExecutor(10)   #先定义一个进程池