How to stop python from propagating signals to subprocesses?

Question

I\'m using python to manage some simulations. I build the parameters and run the program using:

pipe = open(\'/dev/null\', \'w\')
pid = subprocess.Popen(shle         


        

Answer 1

Combining some of other answers that will do the trick - no signal sent to main app will be forwarded to the subprocess.

import os
from subprocess import Popen

def preexec(): # Don't forward signals.
    os.setpgrp()

Popen('whatever', preexec_fn = preexec)