Raspberry Pi Button Event Example

import RPi.GPIO as GPIO

def button_callback(channel):
    print("Button was pushed!")

gpioPin = 13

# GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(gpioPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

GPIO.add_event_detect(gpioPin,GPIO.RISING,callback=button_callback)
message = input_raw("Press enter to quit\n\n")

GPIO.cleanup() # Clean up