from machine import Pin
from time import sleep

#led2 = Pin(2, Pin.OUT)
#led15 = Pin(15, Pin.OUT)
#led4 = Pin(4, Pin.OUT)
leds = [Pin(2, Pin.OUT), Pin(15, Pin.OUT), Pin(4, Pin.OUT)]
# Ciclo infinito
while True:
    for i in leds:
        i.value(not i.value())
        sleep(1)
    '''
    led15.value(0)
    led2.value(1)
    sleep(1)  # Espera de un segundo
    led2.value(0)
    led4.value(1)
    sleep(1)
    led4.value(0)
    led15.value(1)
    sleep(1)
    '''