python线程池极简教程

实现代码

import multiprocessing as mp
import time
import random
import subprocess
import logging
logger = mp.log_to_stderr(logging.WARN)

def popen_wrapper(i):
    logger.warn('echo "hi"')
    return i

def log_result(retval):
    results.append(retval)

if __name__ == '__main__':
	#15个任务
    num_to_run = 15
    #线程池中3个进程
    max_parallel = 3
    results = []

    pool =  mp.Pool(max_parallel)
    for i in range(num_to_run):
        pool.apply_async(popen_wrapper, args=(i,), callback=log_result)
    pool.close()
    pool.join()

    logger.warn(results)

原网址：https://www.icode9.com/content-3-527168.html