from machine import Pin 
import utime 

led = Pin (21, Pin. OUT)
pulsador= Pin(19, Pin.IN)

while True:
    if pulsador.value() ==1:
        print("Boton ON")
        led.value(1)
        utime.sleep_ms(10)

    else:
        led.value(0)
        utime.sleep_ms(10)
        print("Boton OFF")