import RPi.GPIO as GPIO
import time
import datetime
PIR = 23
LED = 18

GPIO.setmode(GPIO.BCM)
GPIO.setup(PIR, GPIO.IN)

while True:
    localtime = time.asctime( time.localtime(time.time()) )
    if GPIO.input(PIR):
       GPIO.setup(LED, GPIO.OUT)
       GPIO.output(LED, True)
       print "Wykrylem Ruch  :", localtime
       time.sleep(2)
       GPIO.setup(LED, GPIO.IN)