[Twisted-Python] Question about processes in python

Jason J. W. Williams jasonjwwilliams at gmail.com
Mon Apr 12 11:47:21 EDT 2010

I will say importing your reactor (from twisted.internet import
reactor) must be done inside the sub-process or you won't get what you


On Mon, Apr 12, 2010 at 9:39 AM, Jason J. W. Williams
<jasonjwwilliams at gmail.com> wrote:
> Haven't had any issues yet. Twisted imports occur inside the process
> function. The app was originally written as a purely blocking
> multiprocessing app and rewritten to use Twisted inside the
> sub-processes. It's passed all automated and hand tests without an
> issue. Is there a reason importing Twisted inside sub-process should
> not work?
> -J
> On Mon, Apr 12, 2010 at 8:45 AM, David Ripton <dripton at ripton.net> wrote:
>> On 2010.04.12 16:23:54 +0200, Gabriel Rossetti wrote:
>>> Jason J. W. Williams wrote:
>>> > You might want to try Python's multiprocessing code, it works very
>>> > well. I've had pretty good luck using it with Twisted inside the
>>> > processes too. The multiprocessing library handles the work of setting
>>> > up the send and receive file descriptors.
>>> yes, I was going to use that but I read in several threads that this
>>> didn't work correctly in Twisted
>> IMO Jason probably has a lurking bug that he just hasn't noticed so far.
>> Same thing with using subprocess instead of the Twisted equivalent
>> inside a Twisted reactor.  IMX it works 99% of the time.  Murphy's Law
>> says it'll pass cursory testing and then fail in production.
>> --
>> David Ripton    dripton at ripton.net
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