applewings_csdn
applewings_csdn
2017-11-11 07:49

jupyter notebook中multiprocessing无法执行的问题

  • python
  • jupyter
  • multiprocessing
 output = mp.Queue()

def rand_string(length, output):
    output.put(length)

if __name__ == "__main__":
    # Setup a list of processes that we want to run
    processes = [mp.Process(target=rand_string, args=(x, output)) for x in range(4)]

    # Run processes
    for p in processes:
        p.start()

    # Exit the completed processes
    for p in processes:
        p.join()

    # Get process results from the output queue
    results = [output.get() for p in processes]

    print(results)

这是一段官方文档中代码,只是稍加改造而已,我在pycharm中运行正常,但是到了jupyter中,却没有反应,点了运行,然后代码框前面的序号变成星号,就没有然后了,也不报错,一只就这样。请问各位大神,有知道的吗?不仅如此,很多涉及到多进程的例子,我在pycharm下跑的通,到了jupyter下,就没反应。

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