Revisi dari http://pastebin.com/cW36qcjS

import RPi.GPIO as GPIO

RED = 17
GRN = 27

def set_LED(color, state):
    GPIO.setwarnings(False)
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(GRN, GPIO.OUT)
    GPIO.setup(RED, GPIO.OUT)

    if color == 'red':
        if state == 'on':
            GPIO.output(RED, True)
            return 0
        elif state == 'off':
            GPIO.output(RED, False)
            return 0
        else:
            return 1
    elif color == 'green':
        if state == 'on':
            GPIO.output(GRN, True)
            return 0
        elif state == 'off':
            GPIO.output(GRN, False)
            return 0
        else:
            return 1
    else:
    return 1