from machine import Pin
import utime
led = Pin(2,Pin.OUT)
led1 = Pin(7,Pin.OUT)
led2 = Pin(12,Pin.OUT)
while True:
led.value(1)
led1.value(0)
led2.value(0)
utime.sleep(1)
led.value(0)
led1.value(1)
led2.value(0)
utime.sleep(1)
led.value(0)
led1.value(0)
led2.value(1)
utime.sleep(1)