from machine import Pin
from utime import sleep

# Define GPIO pins for LEDs
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:
  #Right to the Left
  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)
  led6.on()
  sleep(0.5)
  led6.off()
  sleep(0.5)
  led7.on()
  sleep(0.5)
  led7.off()
  sleep(0.5)
  led8.on()
  sleep(0.5)
  led8.off()
  sleep(0.5)
  #Left to the Right
  led8.on()
  sleep(0.5)
  led8.off()
  sleep(0.5)
  led7.on()
  sleep(0.5)
  led7.off()
  sleep(0.5)
  led6.on()
  sleep(0.5)
  led6.off()
  sleep(0.5)
  led5.on()
  sleep(0.5)
  led5.off()
  sleep(0.5)
  led4.on()
  sleep(0.5)
  led4.off()
  sleep(0.5)
  led3.on()
  sleep(0.5)
  led3.off()
  sleep(0.5)
  led2.on()
  sleep(0.5)
  led2.off()
  sleep(0.5)
  led1.on()
  sleep(0.5)
  led1.off()
  sleep(0.5)