Question

In Python I have seen many examples where multiprocessing is called but the target just prints something. I have a scenario where the target returns 2 variables, which I need to use later. For example:

def foo(some args):
   a = someObject
   b = someObject
   return a,b

p1=multiprocess(target=foo,args(some args))
p2=multiprocess(target=foo,args(some args))
p3=multiprocess(target=foo,args(some args))

Now what? I can do .start and .join, but how do I retrieve the individual results? I need to catch the return a,b for all the jobs I execute and then work on it.

Answer 1

Yes, sure – you can use a number of methods. One of the easiest ones is a shared Queue. See an example here: http://eli.thegreenplace.net/2012/01/16/python-parallelizing-cpu-bound-tasks-with-multiprocessing/