python实现红绿灯

python实现红绿灯

import threading,time
import randomdef light():if not event.isSet(): #如果没有设定eventevent.set() #wait就不阻塞 #绿灯状态count = 0while True:if count < 10:print("\033[42;1m--green light on--\033[0m")elif count <13:print("\033[43;1m--yellow light on --\033[0m")elif count <20:if event.isSet():event.clear()print("\033[41;1m--red light on-- \033[0m")else:count = 0event.set() #打开绿灯time.sleep(1)count +=1
# def car(n):
#     while 1:
#         time.sleep(random.randrange(10))
#         if event.isSet(): #绿灯
#             print("car [%s] is running.." %n)
#         else:
#             print("car [%s] is waiting for the red light.." %n)
def car(n):    #no bug versionwhile 1:time.sleep(1) #让车慢点if event.isSet(): #绿灯print("car [%s] is running.." %n)else:print("car [%s] is waiting for the red light.." %n)event.wait() #不断检查flag有没有被设定,如果没有设定就等着,这个是输入event等待时间，可以精确到毫秒级
if __name__ == "__main__":event = threading.Event()Light = threading.Thread(target=light)Light.start()for i in range(3):t = threading.Thread(target=car,args=(i,))t.start()

转载于:https://www.cnblogs.com/Presley-lpc/p/9998128.html

效果图

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