Python3 裏面的線程池

from concurrent.futures import ThreadPoolExecutor,ProcessPoolExecutor
import time
def task(i):
    print(i)
    time.sleep(1)
pool = ThreadPoolExecutor(10)   #先定義一個線程池

for index in range(64):
    pool.submit(task,index)

print('end')

在這裏 

ThreadPoolExecutor  是封裝了線程池

ProcessPoolExecutor 是封裝了進程池

若是想用進程池。只需修改代碼爲

pool = ProcessPoolExecutor(10)   #先定義一個進程池