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aio-libs
10.5K Stars 1.5K Forks Apache License 2.0 7.2K Commits 302 Opened issues

Description

Asynchronous HTTP client/server framework for asyncio and Python

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==================================

Async http client/server framework

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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 middlewares and plugable 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('http://python.org') as response:

      print("Status:", response.status)
      print("Content-type:", response.headers['content-type'])

      html = await response.text()
      print("Body:", html[:15], "...")

loop = asyncio.geteventloop() loop.rununtilcomplete(main())

This prints:

.. code-block::

Status: 200
Content-type: text/html; charset=utf-8
Body:  ...

Coming from

requests 
_ ? Read
why we need so many lines 
_.

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
    
    _
  • Built with aiohttp
    
    _
  • Powered by aiohttp
    
    _

Feel free to make a Pull Request for adding your link to these pages!

Communication channels

aio-libs discourse group: https://aio-libs.discourse.group

gitter chat https://gitter.im/aio-libs/Lobby

We support

Stack Overflow
_. Please add aiohttp tag to your question there.

Requirements

  • Python >= 3.7
  • async-timeout_
  • attrs_
  • chardet_
  • multidict_
  • yarl_

Optionally you may install the cChardet_ and aiodns_ libraries (highly recommended for sake of speed).

.. chardet: https://pypi.python.org/pypi/chardet .. _aiodns: https://pypi.python.org/pypi/aiodns .. _attrs: https://github.com/python-attrs/attrs .. _multidict: https://pypi.python.org/pypi/multidict .. _yarl: https://pypi.python.org/pypi/yarl .. _async-timeout: https://pypi.python.org/pypi/asynctimeout .. _cChardet: https://pypi.python.org/pypi/cchardet

License

aiohttp
is offered under the Apache 2 license.

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

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