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Re: Question related to multiprocessing.Process

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On Sat, Jan 19, 2013 at 3:50 PM, Cen Wang <iwarobots@gmail.com> wrote:
> Hi, when I use multiprocessing.Process in this way:
>
> from multiprocessing import Process
>
> class MyProcess(Process):
>
>     def __init__(self):
>         Process.__init__(self)
>
>     def run(self):
>         print 'x'
>
> p = MyProcess()
> p.start()
>
> It just keeps printing 'x' on my command prompt and does not end. But I think MyProcess should print an 'x' and then terminate. I don't why this is happening. I'm using Win7 64 bit, Python 2.7.3. Any idea? Thanks in advance.

Multiprocessing on Windows requires that your module be importable. So
it imports your main module, which instantiates another MyProcess,
starts it, rinse and repeat. You'll need to protect your main routine
code:

if __name__=="__main__":
    p = MyProcess()
    p.start()

ChrisA

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Question related to multiprocessing.Process Cen Wang <iwarobots@gmail.com> - 2013-01-18 20:50 -0800
  Re: Question related to multiprocessing.Process Chris Angelico <rosuav@gmail.com> - 2013-01-19 16:05 +1100
    Re: Question related to multiprocessing.Process Cen Wang <iwarobots@gmail.com> - 2013-01-18 21:33 -0800
    Re: Question related to multiprocessing.Process Cen Wang <iwarobots@gmail.com> - 2013-01-18 21:33 -0800
  Re: Question related to multiprocessing.Process Terry Reedy <tjreedy@udel.edu> - 2013-01-19 06:27 -0500

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