Process timeout and status check

restart.py

def restart(timeout=5):
    """
    Script polls the process checking 
    for the status of the process.
    """
    status, success = "Restart successfull....", True
    start = datetime.now()
    proc = subprocess.Popen(CMD, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

    # Polling to have process timeout
    while proc.poll() is None:
        time.sleep(0.1)
        now = datetime.now()
        if (now - start).seconds > timeout:
            os.kill(proc.pid, signal.SIGKILL)
            os.waitpid(-1, os.WNOHANG)
            return "Server restart timeout", False
    if vars(proc)['returncode'] == 1:
        success = False
    return status, success