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

fork_orphan.py

from os import fork, getppid
from time import sleep

pid = fork()

if pid == 0:
    print "I'm about to become an orphan!"
    for _ in range(3):
        sleep(1)
        print "My parent is", getppid()
else:
    print "Parent here, I just created child", pid
    sleep(1)