from machine import Pin
from utime import sleep
import time
LED1=Pin(4,Pin.OUT)
LED2=Pin(5,Pin.OUT)
#LED3=Pin(6,Pin.OUT)
while True:
  LED1.value(1)
  LED2.value(0)
  time.sleep(0.2)
  LED1.value(0)
  LED2.value(1)
  time.sleep(0.2)