celery: daemonic processes are not allowed to have children

Question

In Python (2.7) I try to create processes (with multiprocessing) in a celery task (celery 3.1.17) but it gives the error:

daemonic processes are not allowed to h         


        

Answer 1

I got this when I use multiprocessing with Celery 4.2.0 and Python3.6. Solved this by using billiard.

I changed my source code from

from multiprocessing import Process

to

from billiard.context import Process

solved this error.

Attention, import source is billiard.context not billiard.process