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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], "...")
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>
_.
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)
https://aiohttp.readthedocs.io/
https://github.com/aio-libs/aiohttp-demos
Third party libraries <http://aiohttp.readthedocs.io/en/latest/third_party.html>
_Built with aiohttp <http://aiohttp.readthedocs.io/en/latest/built_with.html>
_Powered by aiohttp <http://aiohttp.readthedocs.io/en/latest/powered_by.html>
_Feel free to make a Pull Request for adding your link to these pages!
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.
Optionally you may install the aiodns_ library (highly recommended for sake of speed).
.. _aiodns: https://pypi.python.org/pypi/aiodns .. _attrs: https://github.com/python-attrs/attrs .. _multidict: https://pypi.python.org/pypi/multidict .. _frozenlist: https://pypi.org/project/frozenlist/ .. _yarl: https://pypi.python.org/pypi/yarl .. _async-timeout: https://pypi.python.org/pypi/async_timeout
aiohttp
is offered under the Apache 2 license.
The aiohttp community would like to thank Keepsafe (https://www.getkeepsafe.com) for its support in the early days of the project.
The latest developer version is available in a GitHub repository: https://github.com/aio-libs/aiohttp
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
FAQs
Async http client/server framework (asyncio)
We found that aiohttp demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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