==================================
Async http client/server framework
.. image:: https://raw.githubusercontent.com/aio-libs/aiohttp/master/docs/aiohttp-plain.svg
:height: 64px
:width: 64px
:alt: aiohttp logo
|
.. image:: https://github.com/aio-libs/aiohttp/workflows/CI/badge.svg
:target: https://github.com/aio-libs/aiohttp/actions?query=workflow%3ACI
:alt: GitHub Actions status for master branch
.. image:: https://codecov.io/gh/aio-libs/aiohttp/branch/master/graph/badge.svg
:target: https://codecov.io/gh/aio-libs/aiohttp
:alt: codecov.io status for master branch
.. image:: https://badge.fury.io/py/aiohttp.svg
:target: https://pypi.org/project/aiohttp
:alt: Latest PyPI package version
.. image:: https://img.shields.io/pypi/dm/aiohttp
:target: https://pypistats.org/packages/aiohttp
:alt: Downloads count
.. image:: https://readthedocs.org/projects/aiohttp/badge/?version=latest
:target: https://docs.aiohttp.org/
:alt: Latest Read The Docs
.. image:: https://img.shields.io/endpoint?url=https://codspeed.io/badge.json
:target: https://codspeed.io/aio-libs/aiohttp
:alt: Codspeed.io status for aiohttp
Key Features
- Supports both client and server side of HTTP protocol.
- Supports both client and server Web-Sockets out-of-the-box and avoids
Callback Hell.
- Provides Web-server with middleware and pluggable routing.
Getting started
Client
To get something from the web:
.. code-block:: python
import aiohttp
import asyncio
async def main():
async with aiohttp.ClientSession() as session:
async with session.get('https://python.org') as response:
print("Status:", response.status)
print("Content-type:", response.headers['content-type'])
html = await response.text()
print("Body:", html[:15], "...")
asyncio.run(main())
This prints:
.. code-block::
Status: 200
Content-type: text/html; charset=utf-8
Body: <!doctype html> ...
Coming from requests <https://requests.readthedocs.io/>_ ? Read why we need so many lines <https://aiohttp.readthedocs.io/en/latest/http_request_lifecycle.html>_.
Server
An example using a simple server:
.. code-block:: python
# examples/server_simple.py
from aiohttp import web
async def handle(request):
name = request.match_info.get('name', "Anonymous")
text = "Hello, " + name
return web.Response(text=text)
async def wshandle(request):
ws = web.WebSocketResponse()
await ws.prepare(request)
async for msg in ws:
if msg.type == web.WSMsgType.text:
await ws.send_str("Hello, {}".format(msg.data))
elif msg.type == web.WSMsgType.binary:
await ws.send_bytes(msg.data)
elif msg.type == web.WSMsgType.close:
break
return ws
app = web.Application()
app.add_routes([web.get('/', handle),
web.get('/echo', wshandle),
web.get('/{name}', handle)])
if __name__ == '__main__':
web.run_app(app)
Documentation
https://aiohttp.readthedocs.io/
Demos
https://github.com/aio-libs/aiohttp-demos
External links
Third party libraries <https://aiohttp.readthedocs.io/en/latest/third_party.html>_Built with aiohttp <https://aiohttp.readthedocs.io/en/latest/built_with.html>_Powered by aiohttp <https://aiohttp.readthedocs.io/en/latest/powered_by.html>_
Feel free to make a Pull Request for adding your link to these pages!
Communication channels
aio-libs Discussions: https://github.com/aio-libs/aiohttp/discussions
Matrix: #aio-libs:matrix.org <https://matrix.to/#/#aio-libs:matrix.org>_
We support Stack Overflow <https://stackoverflow.com/questions/tagged/aiohttp>_.
Please add aiohttp tag to your question there.
Requirements
- multidict_
- yarl_
- frozenlist_
Optionally you may install the aiodns_ library (highly recommended for sake of speed).
.. _aiodns: https://pypi.python.org/pypi/aiodns
.. _multidict: https://pypi.python.org/pypi/multidict
.. _frozenlist: https://pypi.org/project/frozenlist/
.. _yarl: https://pypi.python.org/pypi/yarl
Keepsafe
The aiohttp community would like to thank Keepsafe
(https://www.getkeepsafe.com) for its support in the early days of
the project.
Source code
The latest developer version is available in a GitHub repository:
https://github.com/aio-libs/aiohttp
Benchmarks
If you are interested in efficiency, the AsyncIO community maintains a
list of benchmarks on the official wiki:
https://github.com/python/asyncio/wiki/Benchmarks
.. image:: https://img.shields.io/matrix/aio-libs:matrix.org?label=Discuss%20on%20Matrix%20at%20%23aio-libs%3Amatrix.org&logo=matrix&server_fqdn=matrix.org&style=flat
:target: https://matrix.to/#/%23aio-libs:matrix.org
:alt: Matrix Room — #aio-libs:matrix.org
.. image:: https://img.shields.io/matrix/aio-libs-space:matrix.org?label=Discuss%20on%20Matrix%20at%20%23aio-libs-space%3Amatrix.org&logo=matrix&server_fqdn=matrix.org&style=flat
:target: https://matrix.to/#/%23aio-libs-space:matrix.org
:alt: Matrix Space — #aio-libs-space:matrix.org
.. image:: https://insights.linuxfoundation.org/api/badge/health-score?project=aiohttp
:target: https://insights.linuxfoundation.org/project/aiohttp
:alt: LFX Health Score
aiohttp 是一个基于 asyncio 的异步 HTTP 客户端和服务器框架：一个 Python 包既能用来发 HTTP 请求，也能用来开发 Web 应用，并且开箱即支持 WebSocket。