Daemon Weigand Reader

def do_cp():
    name = 'cpdaemon'
    logger = logging.getLogger(name)
    handler = logging.FileHandler('/tmp/%s.log' % (name))
    formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    logger.setLevel(logging.WARNING)
    logger.error('cpdaemon starting')

    while True:
        try:
            pi = pigpio.pi()
            w = wiegand.decoder(pi, 27, 17, callback)
            localtime = time.asctime( time.localtime(time.time()) )
            logger.error('Started (try)')
            while 1:
                time.sleep(1)
        except Exception, ex:
            logger.error(ex)
        w.cancel()
        pi.stop()
        GPIO.cleanup()

def run():
    with daemon.DaemonContext():
        do_cp()

if __name__ == "__main__":
    run()