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https://github.com/pallets/quart

An async Python micro framework for building web applications.
https://github.com/pallets/quart

asgi asyncio http-server python quart

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An async Python micro framework for building web applications.

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README 

        
Quart

=====



.. image:: https://raw.githubusercontent.com/pallets/quart/main/artwork/logo.png

   :alt: 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.



Quickstart

----------



Quart can be installed via `pip

`_,



.. code-block:: console



    $ pip install quart



and requires Python 3.9.0 or higher (see `python version support

`_

for reasoning).



A minimal Quart example is,



.. code-block:: python



    from quart import Quart, render_template, websocket



    app = Quart(__name__)



    @app.route("/")

    async def hello():

        return await render_template("index.html")



    @app.route("/api")

    async def json():

        return {"hello": "world"}



    @app.websocket("/ws")

    async def ws():

        while True:

            await websocket.send("hello")

            await websocket.send_json({"hello": "world"})



    if __name__ == "__main__":

        app.run()



if the above is in a file called ``app.py`` it can be run as,



.. code-block:: console



    $ python app.py



To deploy this app in a production setting see the `deployment

`_

documentation.



Contributing

------------



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

`_.



Testing

^^^^^^^



The best way to test Quart is with `Tox

`_,



.. code-block:: console



    $ pip install tox

    $ tox



this will check the code style and run the tests.



Help

----



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.



.. |Build Status| image:: https://github.com/pallets/quart/actions/workflows/tests.yaml/badge.svg

   :target: https://github.com/pallets/quart/commits/main



.. |docs| image:: https://img.shields.io/badge/docs-passing-brightgreen.svg

   :target: https://quart.palletsprojects.com



.. |pypi| image:: https://img.shields.io/pypi/v/quart.svg

   :target: https://pypi.python.org/pypi/Quart/



.. |python| image:: https://img.shields.io/pypi/pyversions/quart.svg

   :target: https://pypi.python.org/pypi/Quart/



.. |license| image:: https://img.shields.io/badge/license-MIT-blue.svg

   :target: https://github.com/pallets/quart/blob/main/LICENSE



.. |chat| image:: https://img.shields.io/badge/chat-join_now-brightgreen.svg

   :target: https://discord.gg/pallets