from machine import Pin
import utime


red = Pin(1, Pin.OUT)
yellow = Pin(5, Pin.OUT)
green = Pin(9, Pin.OUT)


def normal_flow():
   red.toggle()
   utime.sleep(0.8)
   red.toggle()
   yellow.toggle()
   utime.sleep(0.8)
   yellow.toggle()
   green.toggle()
   utime.sleep(0.8)
   green.toggle()




def reset_initiated():
   for i in range(3):
       red.value(1)
       yellow.value(1)
       green.value(1)
       utime.sleep(0.2)
       red.value(0)
       yellow.value(0)
       green.value(0)
       utime.sleep(0.2)




while True:
   reset_initiated()
   normal_flow()