importthreadingimporttime#定义task_threading方法deftask_threading(counter):print(f"线程名称:{threading.current_thread().name} 参数:{counter}开始时间 :{time.strftime('%Y-%m-%d%H:%M:%S')} ")num=counterwhilenum:time.sleep(3)num-=1print(f"线程名称:{threading.current_thread().name} 参数:{count...
'''利用回调函数,实现代码的多种功能的扩展性'''fromconcurrent.futuresimportThreadPoolExecutorimportrequestsdeftxt(future):#根据add_done_callbak 回调函数 执行下列操作download_response=future.result()#获取download函数返回的结果print('处理中',download_response.url,download_response.status_code,len(download_r...
await asyncio.gather( asyncio.to_thread(blocking_io), asyncio.sleep(1)) print(f"finished main at {time.strftime('%X')}") asyncio.run(main()) # Expected output: # # started main at 19:50:53 # start blocking_io at 19:50:53 # blocking_io complete at 19:50:54 # finished main at...
recv_calback): threading.Thread.__init__(self) ## 构造线程安全队列 self.Q = queue.Queue() self.recv_calback =recv_calback self.start() #放入队列 def put(self,datas): threadName =threading.currentThread().name # print(threadName) self.Q.put(datas) #关闭队列 def close(...
t2=task_2()#print(t1,t2)whileTrue:next(t1)#1、唤醒生成器t1,执行到yield后,保存上下文,挂起任务;下次再次唤醒之后,从yield继续往下执行print("\nThe main thread!\n")#2、继续往下执行next(t2)#3、唤醒生成器t2,... 运行结果如下: 生成器的回顾,yield方法的执行流程 代码...
thread模块不支持守护线程,当主线程退出时,所有的子线程不论它们是否还在工作,都会被强行退出。而threading模块支持守护线程,守护线程一般是一个等待客户请求的服务器,如果没有客户提出请求它就在那等着,如果设定一个线程为守护线程,就表示这个线程是不重要的,在进程退出的时候,不用等待这个线程退出。
thread_pool = ThreadPoolExecutor() future = thread_pool.submit(run_in_thread, 3) future.add_done_callback(on_data_received) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 虽然Future 是可以 add_callback 的,但这个回调是在子线程中执行的,并非 UI 主线程。这就会打破 Tkinter 的约束:只有主 GUI ...
thread.start_new_thread(ws.run_forever,(),{"sslopt":{"cert_reqs":ssl.CERT_NONE}})# Iterate over the CallbackToIterator instance answer=""total_tokens=0formessageinws.iterator:data=json.loads(message)code=data["header"]["code"]ifcode!=0:ws.close()raiseException(f"请求错误: {code},...
When you call an exposed function, you can immediately pass a callback function afterwards. This callback will automatically be called asynchronously with the return value when the function has finished executing on the other side. For example, if we have the following function defined and exposed...
'machine.on_exception' source/destination callbacks will be executed when an exception has been raised 'machine.finalize_event' source/destination callbacks will be executed even if no transition took place or an exception has been raisedIf any callback raises an exception, the processing of callbac...