import time
from machine import Pin

led1=Pin(22, Pin.OUT)
led2=Pin(23, Pin.OUT)

while True:
  led1.value(1)
  time.sleep(0.2)
  led1.value(0)
  time.sleep(0.2)
  led2.value(1)
  time.sleep(0.2)
  led2.value(0)
  time.sleep(0.2)