#!/usr/bin/env python3

import RPi.GPIO as GPIO 
from time import sleep 
GPIO.setwarnings(False) 
 
GPIO.setmode(GPIO.BCM) 
GPIO.setup(17, GPIO.OUT) 
 
while True: 
    GPIO.output(17, True) 
    print ("lampe an")
    sleep(1) 
    GPIO.output(17, False) 
    print ("lampe aus")
    sleep(1)