Async http client/server framework (asyncio)

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License: Apache Software License (Apache 2)

Maintainer: aiohttp team <team@aiohttp.org>

Requires: Python >=3.6

Maintainers

Avatar for aio-libs-bot from gravatar.com aio-libs-bot Avatar for Andrew.Svetlov from gravatar.com Andrew.Svetlov Avatar for fafhrd from gravatar.com fafhrd Avatar for webknjaz from gravatar.com webknjaz

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Project description

aiohttp logo

GitHub Actions status for master branch codecov.io status for master branch Latest PyPI package version Latest Read The Docs Discourse status Chat on Gitter

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:

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.get_event_loop()
loop.run_until_complete(main())

This prints:

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

Coming from requests ? Read why we need so many lines.

Server

An example using a simple server:

# 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)

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

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

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

Project details

Project links

Statistics

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Meta

License: Apache Software License (Apache 2)

Maintainer: aiohttp team <team@aiohttp.org>

Requires: Python >=3.6

Maintainers

Avatar for aio-libs-bot from gravatar.com aio-libs-bot Avatar for Andrew.Svetlov from gravatar.com Andrew.Svetlov Avatar for fafhrd from gravatar.com fafhrd Avatar for webknjaz from gravatar.com webknjaz

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4.0.0a1 pre-release

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3.8.1

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3.0.9

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2.3.0a1 pre-release

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2.1.0

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2.0.6

2.0.5

2.0.4

2.0.3

2.0.2

2.0.1

2.0.0

2.0.0rc1 pre-release

1.3.5

1.3.4

1.3.3

1.3.2

1.3.1

1.3.0

1.2.0

1.1.6

1.1.5

1.1.4

1.1.3

1.1.2

1.1.1

1.1.0

1.0.5

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1.0.1

1.0.0

0.22.5

0.22.4

0.22.3

0.22.2

0.22.1

0.22.0

0.22.0b6 pre-release

0.22.0b5 pre-release

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0.22.0b1 pre-release

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0.21.1

0.21.0

0.20.2

0.20.1

0.20.0

0.19.0

0.18.4

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