executor = ThreadPoolExecutor() 定义一个异步函数,使用run_in_executor方法来运行耗时的操作: 代码语言:txt 复制 async def async_function(): # 执行耗时的操作 result = await tornado.ioloop.IOLoop.current().run_in_executor(executor, blocking_function) # 处理结果 return result 创建一...
asyncdefmain():loop=asyncio.get_event_loop()result=awaitloop.run_in_executor(None,time_consuming_function)print(result)asyncio.run(main())```在上面的示例中，`time_consuming_function`是一个模拟的耗时操作，我们使用`asyncio.run_in_executor`将其提交给默认的执行器（通常是一个线程池），然后等待它...
import asyncio import functools import sys import typing from typing import Any, AsyncGenerator, Iterator try: import contextvars # Python 3.7+ only or via contextvars backport. except ImportError: # pragma: no cover contextvars = None # type: ignore if sys.version_info >= (3, 7): # pragma...
`run_in_executor`的基本用法如下: ```python import tornado.executors def my_async_function(argument): #非阻塞操作,例如:IO操作,数据库查询等 print("In my_async_function, argument =", argument) #这里可以调用其他异步方法,如:tornado.ioloop.IOLoop.current().add_callback tornado.executors.run_in_...
asyncdefrun(): loop=asyncio.get_event_loop() # 新建线程池 pool=ThreadPoolExecutor() # 任务列表 tasks=[loop.run_in_executor(pool, long_blocking_function), loop.run_in_executor(pool, long_blocking_function)] # 等待所有任务结束并返回
问如何在Python/Tornado中调用带有run_in_executor方法的异步函数？EN先介绍下背景：由于工作需要，前段...
# execute a function in a separate thread await loop.run_in_executor(None, task) 或者,可以创建一个执行器并将其传递给 loop.run_in_executor() 函数,该函数将在执行器中执行异步调用。 在这种情况下,调用者必须管理执行器,一旦调用者完成它就将其关闭。
Therun_in_executorfunction in asyncio does not stop the thread after task cancellation. Steps to Reproduce importasyncioimporttimedefrunner():whileTrue:print('Running.')time.sleep(1)asyncdeftest():task=asyncio.get_event_loop().run_in_executor(None,runner)task.cancel()awaittaskasyncio.get_event...
1-) Wraps the function to run inside the context.functools.partial(context.run, func, *args, **kwargs) 2-) Then usesrun_in_executorto run the function `await loop.run_in_executor(None, func). run_in_executor, usesexecutor.submitto submit to function to a thread. ...
FunctionCallFrame* call_frame;constExecutorImpl* impl_; CancellationManager* cancellation_manager_; Executor::Args::Runner runner_;boolsync_on_finish_;//拥有booldumped_on_error_ =false;//当前执行步骤开始的帧FrameState* root_frame_;//执行器结束时需要调用的回调函数Executor::DoneCallback done_cb_;...