from machine import Pin
from time import sleep

led1 = Pin(15, Pin.OUT)
led2 = Pin(2, Pin.OUT)
led3 = Pin(4, Pin.OUT)
led4 = Pin(13, Pin.OUT)
led5 = Pin(12, Pin.OUT)

while True:
  led1.on()
  sleep(0.5)
  led1.off()
  sleep(0.5)
  led2.on()
  sleep(0.5)
  led2.off()
  sleep(0.5)
  led3.on()
  sleep(0.5)
  led3.off()
  sleep(0.5)
  led4.on()
  sleep(0.5)
  led4.off()
  sleep(0.5)
  led5.on()
  sleep(0.5)
  led5.off()
  sleep(0.5)