import threading,timeevent = threading.Event()   #设置事件的全局变量
def lighter():"红绿灯"count = 0event.set()   #先设置绿灯while True:if count > 5 and count < 10:   #改成红灯event.clear()    #清除标志位print("\033[41mred light is on ....\033[0m")elif count > 10:event.set()   #创建标志位，变成绿灯count = 0else:print("\033[42mgree light is on ....\033[0m")time.sleep(1)count += 1def car(name):"车子"while True:if event.is_set():   #有标志位，代表是绿灯print("{0} running ....".format(name))time.sleep(1)else:   #代表红灯print("{0} sees red light ,waiting ....".format(name))event.wait()   #阻塞print("\033[32mgreen light is on , start going ...\033[0m")light = threading.Thread(target=lighter,)
light.start()car1 = threading.Thread(target=car,args=("car1",))
car1.start()

import threading,time
import random
def light():if not event.isSet():event.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)
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()

 1 import threading
 2 import time
 3 import random
 4
 5 def door():
 6     door_open_time_counter = 0
 7     while True:
 8         if door_swiping_event.is_set():
 9             print("\033[32;1mdoor opening....\033[0m")
10             door_open_time_counter +=1
11
12         else:
13             print("\033[31;1mdoor closed...., swipe to open.\033[0m")
14             door_open_time_counter = 0 #清空计时器
15             door_swiping_event.wait()
16
17
18         if door_open_time_counter > 3:#门开了已经3s了,该关了
19             door_swiping_event.clear()
20
21         time.sleep(0.5)
22
23
24 def staff(n):
25
26     print("staff [%s] is comming..." % n )
27     while True:
28         if door_swiping_event.is_set():
29             print("\033[34;1mdoor is opened, passing.....\033[0m")
30             break
31         else:
32             print("staff [%s] sees door got closed, swipping the card....." % n)
33             print(door_swiping_event.set())
34             door_swiping_event.set()
35             print("after set ",door_swiping_event.set())
36         time.sleep(0.5)
37 door_swiping_event  = threading.Event() #设置事件
38
39
40 door_thread = threading.Thread(target=door)
41 door_thread.start()
42
43
44
45 for i in range(5):
46     p = threading.Thread(target=staff,args=(i,))
47     time.sleep(random.randrange(3))
48     p.start()
49
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