Re: Trying to run jobs in the background using multiprocessing

On Wed, Nov 27, 2013 at 2:58 PM, Pau Creixell <paucreixell@gmail.com> wrote:
> Hi there!
>
> I am trying to run jobs in the background using the following (minimal)
> code:
>
> Under views.py:
>
> def submit(request):
> model = MyModel()
> model.RunInAThread(ReferenceSeparator, MutationSeparator)
>
> Under models.py:
>
> class MyModel(models.Model):
> def RunInAThread(self, ReferenceSeparator, MutationSeparator):
> print 1
> Thread = multiprocessing.Process(target = self.Run, args=(self,
> ReferenceSeparator, MutationSeparator))

I suspect that if you are setting the target to be self.Run, then the
args should not include self:

Thread = multiprocessing.Process(target = self.Run,
args=(ReferenceSeparator, MutationSeparator))

-Doug

> print 2
> Thread.daemon = True
> print 3
> Thread.start()
> print 4
>
> def Run(self, ReferenceSeparator, MutationSeparator):
> print 5
>
>
> But I get the error below and it only print 1, 2, 3 and 4, but not 5:
>
> TypeError at /submit
> 'str' object is not callable
> ...
> Exception Location: /sw/lib/python2.6/multiprocessing/forking.py in
> __init__, line 98
> ...
>
> I have tried in many different ways (e.g. Daemon = False, without "self" as
> an "args"), but don't really understand why this would not work, unless
> Django doesn't permit multiprocessing (which some people seem to suggest
> online).
> Any help will be highly appreciated.
>
> Best wishes,
> Pau
>
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