import RPi.GPIO as GPIO

# Set up GPIO mode
GPIO.setmode(GPIO.BCM)


led_pin = 17
GPIO.setup(led_pin, GPIO.OUT)



try:
    while True:
        # Read switch state
        if GPIO.input(switch_pin) == 0:
            # turn on LED
            GPIO.output(led_pin,GPIO.HIGH)
            else:
                # turn off LED
                GPIO.output(led_pin,GPIO.LOW)

except KeyboardInterrupt: