import os, time
def counter(count):
for i in range(count):
time.sleep(1)
print('%s. count of [%s]' % (i, os.getpid()))
for i in range(3):
pid = os.fork()
if pid == 0:
counter(4)
os._exit(0)
else:
print('Another process spawned: %d' % pid)
print('Exit of parent process')