creating a simple python thread

multi.py

import thread
import time
def run():
    start=1
    while 1:
        start=start*2

thread.start_new_thread(run,())
thread.start_new_thread(run,())
time.sleep(1000)

pythread-session.sh

shansen@moki:~$ ls /proc/13705/task/
13705  13706

pythread.py

import os
import thread
import time
print "run ls /proc/%s/task/ to see active threads"%(os.getpid(),)
def run():
    while 1:
        time.sleep(100)

t=thread.start_new_thread(run,())
time.sleep(100)