0121 threading库 多线程练习

import threadingimport time#线程实现def run(n):    print("task",n)    time.sleep(1)    print("3s")    time.sleep(1)    print("2s")    time.sleep(1)    print("1s")    time.sleep(1)    print("0s")    time.sleep(1)def run(n):    for i in range(1,101):        print(n,"跑了",i,"米")if __name__ == '__main__':    t1 = threading.Thread(target=run,args=("刘奕铭",))    t2 = threading.Thread(target=run, args=("付强",))    t3 = threading.Thread(target=run, args=("孙鑫",))    t1.start()    t2.start()    t3.start()#自定义线程class MyThread(threading.Thread):    def __init__(self,n):        super().__init__()        self.n = n    def run(self):        for i in range(1,101):            print(self.n,"跑了",i,"米")if __name__ == "__main__":    t1 = MyThread("付强")    t2 = MyThread("孙鑫")    t3 = MyThread("刘奕铭")    t1.start()    t2.start()    t3.start()#守护线程def run(n):    print("task",n)    time.sleep(1)    print("3s")    time.sleep(1)    print("2s")    time.sleep(1)    print("1s")    time.sleep(1)    print("0s")    time.sleep(1)def run(n):    for i in range(1,101):        print(n,"跑了",i,"米")if __name__ == '__main__':    t1 = threading.Thread(target=run,args=("刘奕铭",))    t2 = threading.Thread(target=run, args=("付强",))    t3 = threading.Thread(target=run, args=("孙鑫",))    t1.setDaemon(True)    t2.setDaemon(True)    t3.setDaemon(True)    t1.start()    t2.start()    t3.start()    t1.join()    t2.join()    t3.join()    print("end")#多线程piao = 100def worker(n):    global piao    while piao>0:        lock.acquire()        piao -= 1        lock.release()        print(n,"买了一张票，剩余：",piao)if __name__ == "__main__":    lock = threading.Lock()    t1 = threading.Thread(target=worker,args=("worker1",))    t2 = threading.Thread(target=worker,args=("worker2",))    t2.start()    t1.start()    t1.join()    t2.join()from threading import Thread,Lockimport os,timedef work():    global n    lock.acquire()    temp=n    time.sleep(0.1)    n=temp-1    lock.release()if __name__ == '__main__':    lock=Lock()    n=100    l=[]    for i in range(100):        p=Thread(target=work)        l.append(p)        p.start()    for p in l:        p.join()# 利用Event类模拟红绿灯import threadingimport timeevent = threading.Event()def lighter():    count = 0    event.set()  # 初始值为绿灯    while True:        if 5 < count <= 10:            event.clear()  # 红灯，清除标志位            print("\33[41;1mred light is on...\033[0m")        elif count > 10:            event.set()  # 绿灯，设置标志位            count = 0        else:            print("\33[42;1mgreen light is on...\033[0m")        time.sleep(1)        count  = 1def car(name):    while True:        if event.is_set():  # 判断是否设置了标志位            print("[%s] running..." % name)            time.sleep(1)        else:            print("[%s] sees red light,waiting..." % name)            event.wait()            print("[%s] green light is on,start going..." % name)light = threading.Thread(target=lighter, )light.start()car = threading.Thread(target=car, args=("MINI",))car.start()

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