asyncio.Queue(maxsize=0): 创建一个异步队列,用于协程间的通信。 asyncio.shield(task): 创建一个保护性Future,即使被取消也不会影响其底层任务的执行。 示例1: import asyncio async def print_message(): print("Hello print_message") return "Hello world!" async def main(): print("Hello main before...
await asyncio.sleep(0.01 * item) q.task_done() print('consumer {}: ending'.format(n)) async def producer(q, num_workers): print('producer: starting') # Add some numbers to the queue to simulate jobs for i in range(num_workers * 3): await q.put(i) print('producer: added task ...
创建一个dispatcher.py文件并插入以下代码: importasyncioasyncdefproducer(queue):foriinrange(10):awaitasyncio.sleep(1)awaitqueue.put(i)awaitqueue.put(None)asyncdefconsumer(queue):whileTrue:item=awaitqueue.get()ifitemisNone:breakprint(f"Consumed: {item}")queue.task_done()asyncdefmain():queue=asyn...
loop = asyncio.get_event_loop() loop.run_until_complete(run()) loop.close() 看到使用了新的ensure_future方法,其实它和之前说的create_task意思差不多,都是为了把一个异步的函数变成一个协程的Task。它们的区别是: create_task是AbstractEventLoop的抽象方法,不同的loop可以实现不同的创建Task方法,这里用的...
q.task_done() break else: await asyncio.sleep(0.01 * item) q.task_done() print('consumer {}: ending'.format(n)) async def producer(q, num_workers): print('producer: starting') # Add some numbers to the queue to simulate jobs ...
Queue.full 与 maxsize 大小对应 Queue.get([block[, timeout]]):获取队列,timeout等待时间 Queue.get_nowait():相当Queue.get(False) Queue.put(item):写入队列,timeout等待时间 Queue.put_nowait(item):相当Queue.put(item, False) Queue.task_done():在完成一项工作之后,Queue.task_done()函数向任务已...
(url)self.queue.task_done()defstart_threads(self,num_threads=5):threads=[]for_inrange(num_threads):thread=threading.Thread(target=self.worker)thread.start()threads.append(thread)forurlinself.urls:self.queue.put(url)self.queue.join()for_inrange(num_threads):self.queue.put(None)forthreadin...
() q.task_done() print('%s捡到了%d块钱!'%(name, money)) async def run(): q = asyncio.Queue(1) producers = [asyncio.create_task(rich(q, 300))] consumers = [asyncio.create_task(lucky(q, name)) for name in 'ABC'] await asyncio.gather(*producers,) await q.join() for c in...
size()print(f'当前队列有:{size} 个元素')url=f'http://httpbin.org/delay/{sleep_time}'asyncwithaiohttp.ClientSession()asclient:resp=awaitclient.get(url)print(awaitresp.json())asyncdefmain():queue=asyncio.Queue()asyncio.create_task(producer(queue))con=asyncio.create_task(consumer(queue))...
Python asyncio无法正确运行多个任务 我有以下代码片段,我希望它同时运行两个异步函数(func1和func2),并且: Worker是一个无限循环,无论队列是否为空,它都会从全局asyncio.Queue实例中获取项目,只需打印一些内容,而Worker.start()是启动该循环的方法 worker1 = Worker()...