import time
from machine import Pin
time.sleep(0.1) # Wait for USB to become ready

led=Pin("LED",Pin.OUT)
a=0
while a!=3:
    a=int(input("Pon un numero entre 1 y 3"))
    if(a==1):
      led.on()
    if(a==2)
      led:off()
     if(a>3):
        print("Error, te he pedido un numero del 1 al 3")