如何在Python中使用线程池
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具体如下:
# -*- coding:utf-8 -*- #! python3 from concurrent.futures import ThreadPoolExecutor,ProcessPoolExecutor import os,time,random def task(n): print('%s is runing' %os.getpid()) time.sleep(random.randint(1,3)) return n**2 if __name__ == '__main__': executor=ProcessPoolExecutor(max_workers=3) futures=[] for i in range(11): future=executor.submit(task,i) futures.append(future) executor.shutdown(True) print('+++>') for future in futures: print(future.result())
运行结果:
38704 is runing
38704 is runing
38704 is runing
38696 is runing
38696 is runing
38696 is runing
38696 is runing
38696 is runing
38712 is runing
38712 is runing
38712 is runing
+++>
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