from machine import Pin
from utime import sleep, sleep_ms, sleep_us

b1 = Pin(19, Pin.OUT)
b2 = Pin(20, Pin.OUT)
b3 = Pin(21, Pin.OUT)
b4 = Pin(47, Pin.OUT)
b5 = Pin(48, Pin.OUT)
b6 = Pin(45, Pin.OUT)
b7 = Pin(35, Pin.OUT)
b8 = Pin(36, Pin.OUT)

leds =[b1,b2,b3,b4,b5,b6,b7,b8]

def derecha():
    for bombillo in leds[::1]:
        bombillo.on()
        sleep_ms(50)
        bombillo.off()
        sleep_ms(50)

def izquierda():
    for bombillo in leds[::-1]:
        bombillo.on()
        sleep_ms(50)
        bombillo.off()
        sleep_ms(50)

def intevaloder():
    for bombillo in leds[::2]:
        bombillo.on()
        sleep_ms(50)
        bombillo.off()
        sleep_ms(50)

def intevaloizq():
    for bombillo in leds[::-2]:
        bombillo.on()
        sleep_ms(50)
        bombillo.off()
        sleep_ms(50)

def medialista():
    for bombillo in leds[0:4]:
        bombillo.on()
        sleep_ms(50)
        bombillo.off()
        sleep_ms(50)


while True:
    derecha()
    derecha()
    izquierda()