mirror of https://github.com/python/cpython
58 lines
1.8 KiB
ReStructuredText
58 lines
1.8 KiB
ReStructuredText
:mod:`asyncio` -- Asynchronous I/O, event loop, coroutines and tasks
|
|
====================================================================
|
|
|
|
.. module:: asyncio
|
|
:synopsis: Asynchronous I/O, event loop, coroutines and tasks.
|
|
|
|
.. versionadded:: 3.4
|
|
|
|
**Source code:** :source:`Lib/asyncio/`
|
|
|
|
--------------
|
|
|
|
This module provides infrastructure for writing single-threaded concurrent
|
|
code using coroutines, multiplexing I/O access over sockets and other
|
|
resources, running network clients and servers, and other related primitives.
|
|
Here is a more detailed list of the package contents:
|
|
|
|
* a pluggable :ref:`event loop <event-loop>` with various system-specific
|
|
implementations;
|
|
|
|
* :ref:`transport <transport>` and :ref:`protocol <protocol>` abstractions
|
|
(similar to those in `Twisted <http://twistedmatrix.com/>`_);
|
|
|
|
* concrete support for TCP, UDP, SSL, subprocess pipes, delayed calls, and
|
|
others (some may be system-dependent);
|
|
|
|
* a :class:`Future` class that mimicks the one in the :mod:`concurrent.futures`
|
|
module, but adapted for use with the event loop;
|
|
|
|
* coroutines and tasks based on ``yield from`` (:PEP:`380`), to help write
|
|
concurrent code in a sequential fashion;
|
|
|
|
* cancellation support for Futures and coroutines;
|
|
|
|
* :ref:`synchronization primitives <sync>` for use between coroutines in
|
|
a single thread, mimicking those in the :mod:`threading` module;
|
|
|
|
* an interface for passing work off to a threadpool, for times when
|
|
you absolutely, positively have to use a library that makes blocking
|
|
I/O calls.
|
|
|
|
Table of content:
|
|
|
|
.. toctree::
|
|
:maxdepth: 3
|
|
|
|
asyncio-eventloop.rst
|
|
asyncio-task.rst
|
|
asyncio-protocol.rst
|
|
asyncio-sync.rst
|
|
asyncio-dev.rst
|
|
|
|
.. seealso::
|
|
|
|
The :mod:`asyncio` module was designed in the :PEP:`3156`. For a
|
|
motivational primer on transports and protocols, see :PEP:`3153`.
|
|
|