Is it possible to multiprocess a function that returns something in Python?

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 nee

Answer 1

It won't work on windows but here is is my multiprocessing decorator for functions, it returns a queue that you can poll and collect returned data from

import os
from Queue import Queue
from multiprocessing import Process

def returning_wrapper(func, *args, **kwargs):
    queue = kwargs.get("multiprocess_returnable")
    del kwargs["multiprocess_returnable"]
    queue.put(func(*args, **kwargs))

class Multiprocess(object):
    """Cute decorator to run a function in multiple processes."""
    def __init__(self, func):
        self.func = func
        self.processes = []

    def __call__(self, *args, **kwargs):
        num_processes = kwargs.get("multiprocess_num_processes", 2) # default to two processes.
        return_obj = kwargs.get("multiprocess_returnable", Queue()) # default to stdlib Queue
        kwargs["multiprocess_returnable"] = return_obj
        for i in xrange(num_processes):
            pro = Process(target=returning_wrapper, args=tuple([self.func] + list(args)), kwargs=kwargs)
            self.processes.append(pro)
            pro.start()
        return return_obj


@Multiprocess
def info():
    print 'module name:', __name__
    print 'parent process:', os.getppid()
    print 'process id:', os.getpid()
    return 4 * 22

data = info()
print data.get(False)