Skip to main content

A Python ASGI web microframework with the same API as Flask

Project description

Quart logo

Build Status docs pypi python license chat

Quart is an async Python web microframework. Using Quart you can,

  • render and serve HTML templates,

  • write (RESTful) JSON APIs,

  • serve WebSockets,

  • stream request and response data,

  • do pretty much anything over the HTTP or WebSocket protocols.


Quart can be installed via pip,

$ pip install quart

and requires Python 3.8.0 or higher (see python version support for reasoning).

A minimal Quart example is,

from quart import Quart, render_template, websocket

app = Quart(__name__)

async def hello():
    return await render_template("index.html")

async def json():
    return {"hello": "world"}

async def ws():
    while True:
        await websocket.send("hello")
        await websocket.send_json({"hello": "world"})

if __name__ == "__main__":

if the above is in a file called it can be run as,

$ python

To deploy this app in a production setting see the deployment documentation.


Quart is developed on GitHub. If you come across an issue, or have a feature request please open an issue. If you want to contribute a fix or the feature-implementation please do (typo fixes welcome), by proposing a merge request.


The best way to test Quart is with Tox,

$ pip install tox
$ tox

this will check the code style and run the tests.


The Quart documentation or cheatsheet are the best places to start, after that try searching stack overflow or ask for help on discord. If you still can’t find an answer please open an issue.

Relationship with Flask

Quart is an asyncio reimplementation of the popular Flask microframework API. This means that if you understand Flask you understand Quart.

Like Flask, Quart has an ecosystem of extensions for more specific needs. In addition a number of the Flask extensions work with Quart.

Migrating from Flask

It should be possible to migrate to Quart from Flask by a find and replace of flask to quart and then adding async and await keywords. See the docs for more help.

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

quart-0.19.6.tar.gz (65.5 kB view hashes)

Uploaded Source

Built Distribution

quart-0.19.6-py3-none-any.whl (78.2 kB view hashes)

Uploaded Python 3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page