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print("-------4、join 方法----")

import multiprocessing
import time

def worker(interval):
    print('工作开始时间：{0}'.format(time.ctime()))
    time.sleep(interval)
    print('工作结果时间：{0}'.format(time.ctime()))

if __name__ == '__main__':
    p = multiprocessing.Process(target=worker, args=(3,))
    p.daemon = True
    p.start()
    p.join()
    print('【EMD】')
