Python - event

import threading
import time
event=threading.Event()
def lighter():
    count = 0
    while True:
        if count < 5:
            event.set()
            print("\033[1;42m;green light is on \033[0m")
            print("car is running")
        elif count < 10:
            print("\033[1;41m;red light is on \033[0m")
            print("car is waiting")
            event.clear()
        time.sleep(1)
        count += 1
        if count == 10 :
            count = 0
def car(name):
    if event.is_set():
        print("%s is waiting ...... "%name)
        event.wait()
    else :
        print("%s is running...."%name)
light = threading.Thread (target=lighter)
car1 = threading.Thread (target=car,args=("aa",))
light.start()
car1.start()