On 1/19/2013 12:05 AM, 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()
This is documented in
17.2.3. Programming guidelines
17.2.3.2. Windows
--
Terry Jan Reedy
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