from mechine import pin
from time import sleep
red=Pin(1,Pin.OUT)
yellow=Pin(5,Pin.OUT)
green=Pin(9,Pin.OUT)

while True
    #Green light
    green.on()
    red.off()
    yellow.off()
    print("green go")
    sleep(6) 
    #yellow light
    yellow.on()
    red.off()
    green.off()
    print("yellow go")
    sleep(3)
    #red light
    red.on()
    yellow.off()
    green.off()
    print("red go")
    sleep(4)
    #red+yellow
    red.on()
    yellow.on()
    green.off()
    print(red + yellow)
    sleep(2)