from machine import Pin
boton_pull_up= Pin(25,Pin.IN, Pin.PULL_UP)
led=Pin(2,Pin.OUT)
while True: 
    if boton_pull_up.value()==0:
        print('LED encendido para pull-down')
        led.value(1)
    else:
        led.value(0)
        print('LED apagado para pull-down')