Thanks! It now works! On Saturday, 19 January 2013 13:05:07 UTC+8, Chris Angelico wrote: > On Sat, Jan 19, 2013 at 3:50 PM, Cen Wang <iwarob...@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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