import RPi.GPIO as GPIO
import time

LED = 17
BUTTON = 27

GPIO.setmode(GPIO.BCM)
GPIO.setup(LED, GPIO.OUT)
GPIO.setup(BUTTON, GPIO.IN, pull_up_down=GPIO.PUD_UP)

led_state = False

try:
    while True:
        if GPIO.input(BUTTON) == GPIO.LOW:  
            led_state = not led_state     
            GPIO.output(LED, led_state)
            time.sleep(0.3)  

except KeyboardInterrupt:
    GPIO.cleanup()