Run function in subprocess in Python

slavanap.subprocess.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# slavanap@gitlab

def subprocess(func):
    def wrapper(v, kv, w):
        w.send(func(*v, **kv))
        w.close()
    import multiprocessing
    def realfunc(*vargs, **kvargs):
        r, w = multiprocessing.Pipe()
        p = multiprocessing.Process(target=wrapper, args=(vargs, kvargs, w))
        p.start()
        p.join()
        if p.exitcode != 0:
            raise OSError("Subprocess exited with an error")
        return r.recv()
    return realfunc