from machine import Pin
import time

led1=Pin(15, Pin.OUT)
led2=Pin(2, Pin.OUT)
led3=Pin(4, Pin.OUT)
led4=Pin(5, Pin.OUT)
led5=Pin(18, Pin.OUT)
while True:
    led1.value(1)
    time.sleep(0.5)
    led2.value(1)
    time.sleep(0.5)
    led3.value(1)
    time.sleep(0.5)
    led4.value(1)
    time.sleep(0.5)
    led5.value(1)
    time.sleep(0.5)
    led5.value(0)
    time.sleep(0.5)
    led4.value(0)
    time.sleep(0.5)
    led3.value(0)
    time.sleep(0.5)
    led2.value(0)
    time.sleep(0.5)
    led1.value(0)
    time.sleep(0.5)
    led1.value(1)
    time.sleep(0.5)
    led2.value(1)
    time.sleep(0.5)
    led3.value(1)
    time.sleep(0.5)
    led4.value(1)
    time.sleep(0.5)
    led5.value(1)
    time.sleep(0.5)