bin-bash

import subprocess, time
import threading
from threading import Thread

process = None

class SThread (Thread):
    """Thread class with a stop() method. The thread itself has to check
    regularly for the stopped() condition."""

    def __init__ (self, **args):
        super(SThread, self).__init__()
        self._stop = threading.Event()

    def stop (self):
        self._stop.set()

    def stopped (self):
        return self._stop.isSet()
            
    def run(self):
        global process
        args = ["/bin/bash","./poc.sh"]
        process = subprocess.Popen(args, shell=True, stdout=subprocess.PIPE)
        for line in process.communicate():
            if line:
                print "process:", line,
                
if __name__ == '__main__':
    print 'starting'
    t = SThread()
    t.start()
    time.sleep(1)
    print 'killing'
    process.kill()
    print 'stopping'
    t.stop()

direct-command

    def run(self):
        global process
        args = ["sleep", "5"]
        process = subprocess.Popen(args, shell=True, stdout=subprocess.PIPE)
        for line in process.communicate():
            if line:
                print "process:", line,

poc.sh

sleep 5