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Python - parent thread handles child threads Exception

Is there a way to get the parent who spawned the new thread to catch the exception of the generated threads? Below is a real basic example of what I'm trying to accomplish. It should stop counting when an exception occurs, but I don't know how to catch it. Are exceptions thread safe? I would love to use a module Subprocess, but I'm stuck with Python 2.3 and don't know how to do it. Perhaps using a module threading?

import time
import thread

def test(): 
    try:
        test = thread.start_new_thread(watchdog, (5,))
        count(10)
    except:
        print('Stopped Counting')

def count(num):
    for i in range(num):
        print i
        time.sleep(1)

def watchdog(timeout):
    time.sleep(timeout)
    raise Exception('Ran out of time')

if __name__ == '__main__':
    test()

UPDATE

My source code was a bit misleading. He is really looking for something more:

import time
import thread
import os

def test(): 
    try:
        test = thread.start_new_thread(watchdog, (5,))
        os.system('count_to_10.exe')
    except:
        print('Stopped Counting')

def watchdog(timeout):
    time.sleep(timeout)
    raise Exception('Ran out of time')

if __name__ == '__main__':
    test()

I am trying to create a watchdog timer to kill the os.system call if for some reason the program freezes.

+5
4

-

def test(): 
    def exeption_cb():
        os._exit()
    test = thread.start_new_thread(watchdog, (5, exception_cb))
    os.system('count_to_10.exe')
    print('Stopped Counting')

def watchdog(timeout, callback):
    time.sleep(timeout)
    callback()

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def system_call():
    os.system('count_to_10.exe')

system_thread = thread.start_new_thread(system_call)
time.sleep(timeout)
system_thread.kill()
+2

Python 2.3

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from threading import Timer
from subprocess import Popen, PIPE

def kill_proc():
    proc.kill()

proc = Popen("count_to_10.exe", shell=True)
t = Timer(60, kill_proc)
t.start()
proc.wait()

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+1

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