monitor_gpio_args.py

#!/usr/bin/env python
import RPi.GPIO as GPIO
import sys
from signal import pause

def button_pressed(channel):
    print("Button %d was pressed" % channel)

if len(sys.argv) < 2:
    print("No port numbers were supplied!")
else:
    GPIO.setmode(GPIO.BCM)  
    for arg in sys.argv[1:]:
        port = int(arg)
        print("Setting up BCM%d" % port)
        GPIO.setup(port, GPIO.IN, pull_up_down=GPIO.PUD_UP)
        GPIO.add_event_detect(port, GPIO.FALLING, callback=button_pressed, bouncetime=300)
    try:
        pause()
    except KeyboardInterrupt:
        GPIO.cleanup()