async def run_task(self, tasks, task_handler):         consumer = asyncio.ensure_future(self.consume(self.task_queue))          await self.produce(tasks, task_handler, self.task_queue)         await self.task_queue.join()          consumer.cancel()      async def produce(self, tasks, task_handler, queue):         n = len(tasks)         for i, task in enumerate(tasks):             item = (i + 1, n, task, task_handler)             await queue.put(item)      async def consume(self, queue):         async with ClientSession() as session:             while 1:                 item = await queue.get()                 index = item[0]                 count = item[1]                 handler = item[3]                 rs = await handler(item[2], i=index, n=count, session=session)                 print('consuming {}/{} {}...'.format(index, count, rs))                 queue.task_done()                 # 只要加了这句程序就挂起了                 await self.produce(rs, self.detail_handler, self.result_queue)                  loop = asyncio.get_event_loop() loop.run_until_complete(self.run_task(url_list, self.page_handler)) loop.close() 

打印

consuming 1/5 ... consuming 2/5 ... 

• 如果不加这句是正常的
• 加了这句为什么会挂起

await self.produce(rs, self.detail_handler, self.result_queue) 

大佬有話說 (0)