python gpio sensor

#! /usr/bin/env python

import sys
import time
import pigpio
import logging
import datetime
import subprocess

logging.basicConfig(level=logging.INFO, format='[%(levelname)s]  %(asctime)s - %(message)s',)

def do_watcher():
    pi = pigpio.pi('pigpiod', 8888)
    if not pi.connected:
           exit()

    debounce = 1000

    pi.set_mode(18, pigpio.INPUT)
    pi.set_glitch_filter(18, debounce)
    cb1 = pi.callback(18, pigpio.RISING_EDGE, button_main)

    logging.info("PiGPIO Conected");

    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        cb1.cancel()

def button_main(gpio, level, tick):
    """CALLBACK:  Respond when the main button is pressed """

    logging.info("button main pressed")
    subprocess.call("/webhook.sh ", shell=True)

if __name__ == "__main__":
    logging.info ("Starting button watcher");
    do_watcher()