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Sanic is a Python 3.9+ web server and web framework that's written to go fast. It allows the usage of the async/await syntax added in Python 3.5, which makes your code non-blocking and speedy.

Sanic is also ASGI compliant, so you can deploy it with an alternative ASGI webserver.

Source code on GitHub | Help and discussion board | User Guide | Chat on Discord

The project is maintained by the community, for the community. Contributions are welcome!

The goal of the project is to provide a simple way to get up and running a highly performant HTTP server that is easy to build, to expand, and ultimately to scale.

Check out open collective to learn more about helping to fund Sanic.

pip install sanic

Sanic makes use of uvloop and ujson to help with performance. If you do not want to use those packages, simply add an environmental variable SANIC_NO_UVLOOP=true or SANIC_NO_UJSON=true at install time.

$ export SANIC_NO_UVLOOP=true
$ export SANIC_NO_UJSON=true
$ pip install --no-binary :all: sanic

from sanic import Sanic
from sanic.response import json
app = Sanic("my-hello-world-app")
@app.route('/')
async def test(request):
    return json({'hello': 'world'})

Sanic can now be easily run from CLI using sanic hello.app.

[2018-12-30 11:37:41 +0200] [13564] [INFO] Goin' Fast @ https://127.0.0.1:8000
[2018-12-30 11:37:41 +0200] [13564] [INFO] Starting worker [13564]

And, we can verify it is working: curl localhost:8000 -i

HTTP/1.1 200 OK
Connection: keep-alive
Keep-Alive: 5
Content-Length: 17
Content-Type: application/json
{"hello":"world"}

Now, let's go build something fast!

Minimum Python version is 3.9.

User Guide, Changelog, and API Documentation can be found at sanic.dev.

Ask a question or join the conversation.

We are always happy to have new contributions. We have marked issues good for anyone looking to get started, and welcome questions on the forums. Please take a look at our Contribution guidelines.