# -*- coding:utf-8 -*-
# 通过标志位来实现两个线程之间的交互
import threading,time
# event = threading.Event() event.wait() event.set() event.clear()
event = threading.Event()
def lighter():
    count = 0
    event.set()  # 先定义标志位、变绿灯
    while True:
        if count >= 5 and count < 10:
            event.clear() #清除标志位
            print('\033[0;31m红灯亮了\033[0m')
        elif count >10 :
            event.set() #变绿灯
            count = 0
        else:
            print("\033[32;1m grenn绿等亮了\033[0m")
        time.sleep(1)
        count +=1
def car(name):
    while True:
        if event.is_set(): #判断是否设置了标志位(代表绿灯)
            print("[%s] 现在是绿灯runint...."%name)
            time.sleep(1)
        else:
            print("[%s] 现在是红灯，waiting...."%name)
            event.wait()
            print("\033[32;1m[%s] 绿灯亮了 开始走咯 going....\033[0m"%name)

L1 = threading.Thread(target=lighter,)
L1.start()
car1 = threading.Thread(target=car,args=("H6",))
car1.start()
car2 = threading.Thread(target=car,args=("H2",))
car2.start()