from gpiozero import LED
from gpiozero import Button
import time

led = LED(17)
button = Button(27)

while True:
        print("waiting for button press...")
        button.wait_for_press()
        print("button is pressed")
        led.on()
        time.sleep(2)
        button.wait_for_release()
        print("button is released")
        led.off()