from machine import Pin
import time
led1=Pin(15,Pin.OUT)
led2=Pin(2,Pin.OUT)
led3=Pin(0,Pin.OUT)
led4=Pin(4,Pin.OUT)
led5=Pin(16,Pin.OUT)
led6=Pin(17,Pin.OUT)
led7=Pin(5,Pin.OUT)
led8=Pin(18,Pin.OUT)
while True:
    led1.value(1)
    time.sleep(0.5)
    led1.value(0)
    time.sleep(0.5)
    led2.value(1)
    time.sleep(0.5)
    led2.value(0)
    time.sleep(0.5)
    led3.value(1)
    time.sleep(0.5)
    led3.value(0)
    time.sleep(0.5)
    led4.value(1)
    time.sleep(0.5)
    led4.value(0)
    time.sleep(0.5)
    led5.value(1)
    time.sleep(0.5)
    led5.value(0)
    time.sleep(0.5)
    led6.value(1)
    time.sleep(0.5)
    led6.value(0)
    time.sleep(0.5)
    led7.value(1)
    time.sleep(0.5)
    led7.value(0)
    time.sleep(0.5)
    led8.value(1)
    time.sleep(0.5)
    led8.value(0)
    time.sleep(0.5)