from time import *
from gpiozero import *
from signal import pause

def led ():
	print ('led allumé')
	"""
	print("One button to turn on or off")

	led = LED(17)
	btn = Button(20, bounce_time=None)

	while True:
  		print('turn on')
  		led.on()
  		sleep(0.2) # to avoid bouncing
  		btn.wait_for_press()
  		print('turn off')
  		led.off()
  		sleep(0.2) # to avoid bouncing
  		btn.wait_for_press()      
	"""