1importthreading2importtime345classMyThread(threading.Thread):6semaphore_run = threading.Semaphore(100)#最多同时运行100个线程78defstart(self):#重载start方法9MyThread.semaphore_run.acquire()#启动之前先取得信号量10try:11super().start()12except:13MyThread.semaphore_run.release()#线程启动失败时释放信...