from signal import SIGTERM
from sys import exit
from time import sleep
from os import *

def slow():
    fork()
    sleep(10)

def fast():
    sleep(1)

child_pids = []
#for child_func in [fast, slow, slow, fast]:
for child_func in [fast, fast]:
    pid = fork()
    if pid == 0:
        setsid()
        child_func()
        exit(0)
    else:
        print "spawned pgrp %d" % pid
        child_pids.append(pid)

(pid, status) = waitpid(-1, 0)
print "Reaped pid: %d, status: %d" % (pid, status)
for child_pid in child_pids:
    try:
        print popen('ps -e -o pid,ppid,pgid,state,command | grep -i python').read()
        print "killing pg %d" % child_pid
        killpg(child_pid, SIGTERM)
    except OSError, e:
        print "Error killing %s: %s" %(child_pid, e)