From blog post: http://lextoumbourou.com/blog/posts/what-are-zombie-processes-unix/

fork_zombie.py

from os import fork, getppid, wait
from sys import exit
from time import sleep

pid = fork()

if pid == 0:
    exit("Goodbye, cruel world")
else:
    print "I created a child:", pid
    print "and now all I want to do is sleep..."
    while True:
        sleep(1)