python 两种多进线程池，线程池调

import multiprocessing
from concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor

def t1(n):

    # print('进程池第{0}次调用'.format(n))
return n

# 带资源回收的进程池
def m_process_pool():
    pool = multiprocessing.Pool(processes=4, maxtasksperchild=3)
    r = []
    for i in range(10):
        r.append(pool.apply_async(t1, (i,)))
    pool.close()
    pool.join()

    for i in r:
        print(i.get())

# 不带资源回收的进程池
def process_pool():

    process_pool = ProcessPoolExecutor(max_workers=10)
    r = []
    for i in range(20):
        r.append(process_pool.submit(t1, (i)))
    for i in r:
        print(i.result())


def thread_pool():

    thread_pool = ThreadPoolExecutor(max_workers=10)
    r = []
    for i in range(20):
        r.append(thread_pool.submit(t1, (i)))
    for i in r:
        print(i.result())