import machine
import random
from machine import Pin, Timer
import time

led_red=Pin(0,Pin.OUT)
led_yellow=Pin(2,Pin.OUT)
led_green=Pin(4,Pin.OUT)
 
 
 
while(1):
    num = random.random()
    print(num)
    if num>0.75:
        led_green.on()
        time.sleep(1)
        led_green.off()
    if num<0.5:
        led_red.on()
        time.sleep(1)
        led_red.off()
    else:
        led_yellow.on()
        time.sleep(1)
        led_yellow.off()
 
    time.sleep(1)