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falcon

by falconry

falconry /falcon

The no-nonsense, minimalist web services and app backend framework for Python developers with a focu...

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The Falcon Web Framework

Falcon <https:></https:>

__ is a reliable, high-performance Python web framework for building large-scale app backends and microservices. It encourages the REST architectural style, and tries to do as little as possible while remaining highly effective.

Falcon apps work with any

WSGI <https:></https:>

_ or

ASGI <https:></https:>

_ server, and run like a champ under CPython 3.5+ and PyPy 3.5+ (3.6+ required for ASGI).

.. Patron list starts here. For Python package, we substitute this section with: Support Falcon Development


A Big Thank You to Our Patrons

Platinum

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[![CERT Gouvernemental Luxembourg](https://falconframework.org/img/sponsors/govcert.png)](https://www.govcert.lu/)

Gold

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[![LIKALO](https://falconframework.org/img/sponsors/likalo.svg)](https://www.likalo.com/)&nbsp;&nbsp;&nbsp;[![Examination RU](https://falconframework.org/img/sponsors/rabota.jpg)](https://www.kontrolnaya-rabota.ru/s/)

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Silver

.. raw:: html

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.. Patron list ends here (see the comment above this section).

Has Falcon helped you make an awesome app? Show your support today with a one-time donation or by becoming a patron. Supporters get cool gear, an opportunity to promote their brand to Python developers, and prioritized support.

Learn how to support Falcon development <https:></https:>

_

Thanks!

Quick Links

  • Read the docs <https:></https:>
    _
  • Falcon add-ons and complementary packages <https:></https:>
    _
  • Falcon talks, podcasts, and blog posts <https:></https:>
    _
  • falconry/user for Falcon users <https:></https:>
    _ @ Gitter
  • falconry/dev for Falcon contributors <https:></https:>
    _ @ Gitter

What People are Saying

"We have been using Falcon as a replacement for [framework] and we simply love the performance (three times faster) and code base size (easily half of our original [framework] code)."

"Falcon looks great so far. I hacked together a quick test for a tiny server of mine and was ~40% faster with only 20 minutes of work."

"Falcon is rock solid and it's fast."

"I'm loving #falconframework! Super clean and simple, I finally have the speed and flexibility I need!"

"I feel like I'm just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend."

"The source code for Falcon is so good, I almost prefer it to documentation. It basically can't be wrong."

"What other framework has integrated support for 786 TRY IT NOW ?"

How is Falcon Different?

Perfection is finally attained not when there is no longer anything to add, but when there is no longer anything to take away. \*- Antoine de Saint-Exupéry\*

We designed Falcon to support the demanding needs of large-scale microservices and responsive app backends. Falcon complements more general Python web frameworks by providing bare-metal performance, reliability, and flexibility wherever you need it.

Fast. Same hardware, more requests. Falcon turns around requests several times faster than most other Python frameworks. For an extra speed boost, Falcon compiles itself with Cython when available, and also works well with

PyPy <https:></https:>

__. Considering a move to another programming language? Benchmark with Falcon + PyPy first.

Reliable. We go to great lengths to avoid introducing breaking changes, and when we do they are fully documented and only introduced (in the spirit of

SemVer <http:></http:>

__) with a major version increment. The code is rigorously tested with numerous inputs and we require 100% coverage at all times. Falcon does not depend on any external Python packages.

Flexible. Falcon leaves a lot of decisions and implementation details to you, the API developer. This gives you a lot of freedom to customize and tune your implementation. Due to Falcon's minimalist design, Python community members are free to independently innovate on

Falcon add-ons and complementary packages <https:></https:>

__.

Debuggable. Falcon eschews magic. It's easy to tell which inputs lead to which outputs. Unhandled exceptions are never encapsulated or masked. Potentially surprising behaviors, such as automatic request body parsing, are well-documented and disabled by default. Finally, when it comes to the framework itself, we take care to keep logic paths simple and understandable. All this makes it easier to reason about the code and to debug edge cases in large-scale deployments.

Features

  • Highly-optimized, extensible code base
  • Intuitive routing via URI templates and REST-inspired resource classes
  • Easy access to headers and bodies through request and response classes
  • DRY request processing via middleware components and hooks
  • Idiomatic HTTP error responses
  • Straightforward exception handling
  • Snappy unit testing through WSGI/ASGI helpers and mocks
  • CPython 3.5+ and PyPy 3.5+ support
  • ~20% speed boost under CPython when Cython is available

Who's Using Falcon?

Falcon is used around the world by a growing number of organizations, including:

  • 7ideas
  • Cronitor
  • EMC
  • Hurricane Electric
  • Leadpages
  • OpenStack
  • Rackspace
  • Shiftgig
  • tempfil.es
  • Opera Software

If you are using the Falcon framework for a community or commercial project, please consider adding your information to our wiki under

Who's Using Falcon? <https:></https:>

_

Community

A number of Falcon add-ons, templates, and complementary packages are available for use in your projects. We've listed several of these on the

Falcon wiki <https:></https:>

_ as a starting point, but you may also wish to search PyPI for additional resources.

The Falconry community on Gitter is a great place to ask questions and share your ideas. You can find us in

falconry/user<https:></https:>

_. We also have a

falconry/dev <https:></https:>
```_ room for discussing the design and development of the framework itself.

Per our

Code of Conduct https:

\_, we expect everyone who participates in community discussions to act professionally, and lead by example in encouraging constructive discussions. Each individual in the community is responsible for creating a positive, constructive, and productive culture.
## Installation

PyPy ^^^^

PyPy http:

\_\_ is the fastest way to run your Falcon app. PyPy3.5+ is supported as of PyPy v5.10.

.. code:: bash

$ pip install falcon


Or, to install the latest beta or release candidate, if any:

.. code:: bash

$ pip install --pre falcon


CPython ^^^^^^^

Falcon also fully supports

CPython https:

\_\_ 3.5+.

A universal wheel is available on PyPI for the the Falcon framework. Installing it is as simple as:

.. code:: bash

$ pip install falcon


Installing the Falcon wheel is a great way to get up and running quickly in a development environment, but for an extra speed boost when deploying your application in production, Falcon can compile itself with Cython. Note, however, that Cython is currently incompatible with the falcon.asgi module.

The following commands tell pip to install Cython, and then to invoke Falcon's

setup.py

, which will in turn detect the presence of Cython and then compile (AKA cythonize) the Falcon framework with the system's default C compiler.

.. code:: bash

$ pip install cython $ pip install --no-binary :all: falcon


If you want to verify that Cython is being invoked, simply pass

-v

 to pip in order to echo the compilation commands:

.. code:: bash

$ pip install -v --no-binary :all: falcon


**Installing on OS X**

Xcode Command Line Tools are required to compile Cython. Install them with this command:

.. code:: bash

$ xcode-select --install


The Clang compiler treats unrecognized command-line options as errors, for example:

.. code:: bash

clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]


You might also see warnings about unused functions. You can work around these issues by setting additional Clang C compiler flags as follows:

.. code:: bash

$ export CFLAGS="-Qunused-arguments -Wno-unused-function"


Dependencies ^^^^^^^^^^^^

Falcon does not require the installation of any other packages, although if Cython has been installed into the environment, it will be used to optimize the framework as explained above.

## WSGI Server

Falcon speaks

WSGI https:

\_ (or

ASGI https:

\_; see also below). In order to serve a Falcon app, you will need a WSGI server. Gunicorn and uWSGI are some of the more popular ones out there, but anything that can load a WSGI app will do.

.. code:: bash

$ pip install [gunicorn|uwsgi]


## ASGI Server

In order to serve a Falcon ASGI app, you will need an ASGI server. Uvicorn is a popular choice:

.. code:: bash

$ pip install uvicorn


## Source Code

Falcon

lives on GitHub https:

\_, making the code easy to browse, download, fork, etc. Pull requests are always welcome! Also, please remember to star the project if it makes you happy. :)

Once you have cloned the repo or downloaded a tarball from GitHub, you can install Falcon like this:

.. code:: bash

$ cd falcon $ pip install .


Or, if you want to edit the code, first fork the main repo, clone the fork to your desktop, and then run the following to install it using symbolic linking, so that when you change your code, the changes will be automagically available to your app without having to reinstall the package:

.. code:: bash

$ cd falcon $ pip install --no-use-pep517 -e .


You can manually test changes to the Falcon framework by switching to the directory of the cloned repo and then running pytest:

.. code:: bash

$ cd falcon $ pip install -r requirements/tests $ pytest tests


Or, to run the default set of tests:

.. code:: bash

$ pip install tox && tox


See also the

tox.ini https:

\_ file for a full list of available environments.
## Read the Docs

The docstrings in the Falcon code base are quite extensive, and we recommend keeping a REPL running while learning the framework so that you can query the various modules and classes as you have questions.

Online docs are available at: https://falcon.readthedocs.io

You can build the same docs locally as follows:

.. code:: bash

$ pip install tox && tox -e docs


Once the docs have been built, you can view them by opening the following index page in your browser. On OS X it's as simple as::

$ open docs/_build/html/index.html


Or on Linux:

$ xdg-open docs/_build/html/index.html


## Getting Started

Here is a simple, contrived example showing how to create a Falcon-based WSGI app (the ASGI version is included further down):

.. code:: python

examples/things.py # Let's get this party started! from wsgiref.simple_server import make_server import falcon # Falcon follows the REST architectural style, meaning (among # other things) that you think in terms of resources and state # transitions, which map to HTTP verbs. class ThingsResource: def on_get(self, req, resp): """Handles GET requests""" resp.status = falcon.HTTP_200 # This is the default status resp.content_type = falcon.MEDIA_TEXT # Default is JSON, so override resp.body = ('\nTwo things awe me most, the starry sky ' 'above me and the moral law within me.\n' '\n' ' ~ Immanuel Kant\n\n') # falcon.App instances are callable WSGI apps... # in larger applications the app is created in a separate file app = falcon.App() # Resources are represented by long-lived class instances things = ThingsResource() # things will handle all requests to the '/things' URL path app.add_route('/things', things) if __name__ == '__main__': with make_server('', 8000, app) as httpd: print('Serving on port 8000...') # Serve until process is killed httpd.serve_forever()


You can run the above example directly using the included wsgiref server:

.. code:: bash

$ pip install falcon $ python things.py


Then, in another terminal:

.. code:: bash

$ curl localhost:8000/things


The ASGI version of the example is similar:

.. code:: python

examples/things_asgi.py import falcon import falcon.asgi # Falcon follows the REST architectural style, meaning (among # other things) that you think in terms of resources and state # transitions, which map to HTTP verbs. class ThingsResource: async def on_get(self, req, resp): """Handles GET requests""" resp.status = falcon.HTTP_200 # This is the default status resp.content_type = falcon.MEDIA_TEXT # Default is JSON, so override resp.body = ('\nTwo things awe me most, the starry sky ' 'above me and the moral law within me.\n' '\n' ' ~ Immanuel Kant\n\n') # falcon.asgi.App instances are callable ASGI apps... # in larger applications the app is created in a separate file app = falcon.asgi.App() # Resources are represented by long-lived class instances things = ThingsResource() # things will handle all requests to the '/things' URL path app.add_route('/things', things)


You can run the ASGI version with uvicorn or any other ASGI server:

.. code:: bash

$ pip install falcon uvicorn $ uvicorn things_asgi:app


## A More Complex Example (WSGI)

Here is a more involved example that demonstrates reading headers and query parameters, handling errors, and working with request and response bodies. Note that this example assumes that the

requests https:

\_ package has been installed.

(For the equivalent ASGI app, see:

A More Complex Example (ASGI)

\_).

.. code:: python

examples/things_advanced.py import json import logging import uuid from wsgiref import simple_server import falcon import requests class StorageEngine: def get_things(self, marker, limit): return [{'id': str(uuid.uuid4()), 'color': 'green'}] def add_thing(self, thing): thing['id'] = str(uuid.uuid4()) return thing class StorageError(Exception): @staticmethod def handle(ex, req, resp, params): # TODO: Log the error, clean up, etc. before raising raise falcon.HTTPInternalServerError() class SinkAdapter: engines = { 'ddg': 'https://duckduckgo.com', 'y': 'https://search.yahoo.com/search', } def __call__(self, req, resp, engine): url = self.engines[engine] params = {'q': req.get_param('q', True)} result = requests.get(url, params=params) resp.status = str(result.status_code) + ' ' + result.reason resp.content_type = result.headers['content-type'] resp.body = result.text class AuthMiddleware: def process_request(self, req, resp): token = req.get_header('Authorization') account_id = req.get_header('Account-ID') challenges = ['Token type="Fernet"'] if token is None: description = ('Please provide an auth token ' 'as part of the request.') raise falcon.HTTPUnauthorized(title='Auth token required', description=description, challenges=challenges, href='http://docs.example.com/auth') if not self._token_is_valid(token, account_id): description = ('The provided auth token is not valid. ' 'Please request a new token and try again.') raise falcon.HTTPUnauthorized(title='Authentication required', description=description, challenges=challenges, href='http://docs.example.com/auth') def _token_is_valid(self, token, account_id): return True # Suuuuuure it's valid... class RequireJSON: def process_request(self, req, resp): if not req.client_accepts_json: raise falcon.HTTPNotAcceptable( description='This API only supports responses encoded as JSON.', href='http://docs.examples.com/api/json') if req.method in ('POST', 'PUT'): if 'application/json' not in req.content_type: raise falcon.HTTPUnsupportedMediaType( title='This API only supports requests encoded as JSON.', href='http://docs.examples.com/api/json') class JSONTranslator: # NOTE: Normally you would simply use req.media and resp.media for # this particular use case; this example serves only to illustrate # what is possible. def process_request(self, req, resp): # req.stream corresponds to the WSGI wsgi.input environ variable, # and allows you to read bytes from the request body. # # See also: PEP 3333 if req.content_length in (None, 0): # Nothing to do return body = req.stream.read() if not body: raise falcon.HTTPBadRequest(title='Empty request body', description='A valid JSON document is required.') try: req.context.doc = json.loads(body.decode('utf-8')) except (ValueError, UnicodeDecodeError): description = ('Could not decode the request body. The ' 'JSON was incorrect or not encoded as ' 'UTF-8.') raise falcon.HTTPBadRequest(title='Malformed JSON', description=description) def process_response(self, req, resp, resource, req_succeeded): if not hasattr(resp.context, 'result'): return resp.body = json.dumps(resp.context.result) def max_body(limit): def hook(req, resp, resource, params): length = req.content_length if length is not None and length > limit: msg = ('The size of the request is too large. The body must not ' 'exceed ' + str(limit) + ' bytes in length.') raise falcon.HTTPPayloadTooLarge( title='Request body is too large', description=msg) return hook class ThingsResource: def __init__(self, db): self.db = db self.logger = logging.getLogger('thingsapp.' + __name__) def on_get(self, req, resp, user_id): marker = req.get_param('marker') or '' limit = req.get_param_as_int('limit') or 50 try: result = self.db.get_things(marker, limit) except Exception as ex: self.logger.error(ex) description = ('Aliens have attacked our base! We will ' 'be back as soon as we fight them off. ' 'We appreciate your patience.') raise falcon.HTTPServiceUnavailable( title='Service Outage', description=description, retry_after=30) # NOTE: Normally you would use resp.media for this sort of thing; # this example serves only to demonstrate how the context can be # used to pass arbitrary values between middleware components, # hooks, and resources. resp.context.result = result resp.set_header('Powered-By', 'Falcon') resp.status = falcon.HTTP_200 @falcon.before(max_body(64 * 1024)) def on_post(self, req, resp, user_id): try: doc = req.context.doc except AttributeError: raise falcon.HTTPBadRequest( title='Missing thing', description='A thing must be submitted in the request body.') proper_thing = self.db.add_thing(doc) resp.status = falcon.HTTP_201 resp.location = '/%s/things/%s' % (user_id, proper_thing['id']) # Configure your WSGI server to load "things.app" (app is a WSGI callable) app = falcon.App(middleware=[AuthMiddleware(), RequireJSON(), JSONTranslator(),]) db = StorageEngine() things = ThingsResource(db) app.add_route('/{user_id}/things', things) # If a responder ever raises an instance of StorageError, pass control to # the given handler. app.add_error_handler(StorageError, StorageError.handle) # Proxy some things to another service; this example shows how you might # send parts of an API off to a legacy system that hasn't been upgraded # yet, or perhaps is a single cluster that all data centers have to share. sink = SinkAdapter() app.add_sink(sink, r'/search/(?Pddg|y)\Z')

Useful for debugging problems in your API; works with pdb.set_trace(). You

can also use Gunicorn to host your app. Gunicorn can be configured to

auto-restart workers when it detects a code change, and it also works

with pdb.

if name == 'main': httpd = simple_server.make_server('127.0.0.1', 8000, app) httpd.serve_forever()


Again this code uses wsgiref, but you can also run the above example using any WSGI server, such as uWSGI or Gunicorn. For example:

.. code:: bash

$ pip install requests gunicorn $ gunicorn things:app


On Windows you can run Gunicorn and uWSGI via WSL, or you might try Waitress:

.. code:: bash

$ pip install requests waitress $ waitress-serve --port=8000 things:app


To test this example go to the another terminal and run:

.. code:: bash

$ http localhost:8000/1/things authorization:custom-token


To visualize the application configuration the :ref:

inspect

 can be used:

.. code:: bash

falcon-inspect-app things_advanced:app


## A More Complex Example (ASGI)

Here's the ASGI version of the app from above. Note that it uses the

httpx https:

\_ package in lieu of

requests https:

\_.

.. code:: python

examples/things_advanced_asgi.py import json import logging import uuid import falcon import falcon.asgi import httpx class StorageEngine: async def get_things(self, marker, limit): return [{'id': str(uuid.uuid4()), 'color': 'green'}] async def add_thing(self, thing): thing['id'] = str(uuid.uuid4()) return thing class StorageError(Exception): @staticmethod async def handle(ex, req, resp, params): # TODO: Log the error, clean up, etc. before raising raise falcon.HTTPInternalServerError() class SinkAdapter: engines = { 'ddg': 'https://duckduckgo.com', 'y': 'https://search.yahoo.com/search', } async def __call__(self, req, resp, engine): url = self.engines[engine] params = {'q': req.get_param('q', True)} async with httpx.AsyncClient() as client: result = await client.get(url, params=params) resp.status = result.status_code resp.content_type = result.headers['content-type'] resp.body = result.text class AuthMiddleware: async def process_request(self, req, resp): token = req.get_header('Authorization') account_id = req.get_header('Account-ID') challenges = ['Token type="Fernet"'] if token is None: description = ('Please provide an auth token ' 'as part of the request.') raise falcon.HTTPUnauthorized(title='Auth token required', description=description, challenges=challenges, href='http://docs.example.com/auth') if not self._token_is_valid(token, account_id): description = ('The provided auth token is not valid. ' 'Please request a new token and try again.') raise falcon.HTTPUnauthorized(title='Authentication required', description=description, challenges=challenges, href='http://docs.example.com/auth') def _token_is_valid(self, token, account_id): return True # Suuuuuure it's valid... class RequireJSON: async def process_request(self, req, resp): if not req.client_accepts_json: raise falcon.HTTPNotAcceptable( description='This API only supports responses encoded as JSON.', href='http://docs.examples.com/api/json') if req.method in ('POST', 'PUT'): if 'application/json' not in req.content_type: raise falcon.HTTPUnsupportedMediaType( description='This API only supports requests encoded as JSON.', href='http://docs.examples.com/api/json') class JSONTranslator: # NOTE: Normally you would simply use req.get_media() and resp.media for # this particular use case; this example serves only to illustrate # what is possible. async def process_request(self, req, resp): # NOTE: Test explicitly for 0, since this property could be None in # the case that the Content-Length header is missing (in which case we # can't know if there is a body without actually attempting to read # it from the request stream.) if req.content_length == 0: # Nothing to do return body = await req.stream.read() if not body: raise falcon.HTTPBadRequest(title='Empty request body', description='A valid JSON document is required.') try: req.context.doc = json.loads(body.decode('utf-8')) except (ValueError, UnicodeDecodeError): description = ('Could not decode the request body. The ' 'JSON was incorrect or not encoded as ' 'UTF-8.') raise falcon.HTTPBadRequest(title='Malformed JSON', description=description) async def process_response(self, req, resp, resource, req_succeeded): if not hasattr(resp.context, 'result'): return resp.body = json.dumps(resp.context.result) def max_body(limit): async def hook(req, resp, resource, params): length = req.content_length if length is not None and length > limit: msg = ('The size of the request is too large. The body must not ' 'exceed ' + str(limit) + ' bytes in length.') raise falcon.HTTPPayloadTooLarge( title='Request body is too large', description=msg) return hook class ThingsResource: def __init__(self, db): self.db = db self.logger = logging.getLogger('thingsapp.' + __name__) async def on_get(self, req, resp, user_id): marker = req.get_param('marker') or '' limit = req.get_param_as_int('limit') or 50 try: result = await self.db.get_things(marker, limit) except Exception as ex: self.logger.error(ex) description = ('Aliens have attacked our base! We will ' 'be back as soon as we fight them off. ' 'We appreciate your patience.') raise falcon.HTTPServiceUnavailable( title='Service Outage', description=description, retry_after=30) # NOTE: Normally you would use resp.media for this sort of thing; # this example serves only to demonstrate how the context can be # used to pass arbitrary values between middleware components, # hooks, and resources. resp.context.result = result resp.set_header('Powered-By', 'Falcon') resp.status = falcon.HTTP_200 @falcon.before(max_body(64 * 1024)) async def on_post(self, req, resp, user_id): try: doc = req.context.doc except AttributeError: raise falcon.HTTPBadRequest( title='Missing thing', description='A thing must be submitted in the request body.') proper_thing = await self.db.add_thing(doc) resp.status = falcon.HTTP_201 resp.location = '/%s/things/%s' % (user_id, proper_thing['id']) # The app instance is an ASGI callable app = falcon.asgi.App(middleware=[# AuthMiddleware(), RequireJSON(), JSONTranslator(),]) db = StorageEngine() things = ThingsResource(db) app.add_route('/{user_id}/things', things) # If a responder ever raises an instance of StorageError, pass control to # the given handler. app.add_error_handler(StorageError, StorageError.handle) # Proxy some things to another service; this example shows how you might # send parts of an API off to a legacy system that hasn't been upgraded # yet, or perhaps is a single cluster that all data centers have to share. sink = SinkAdapter() app.add_sink(sink, r'/search/(?Pddg|y)\Z')

```

You can run the ASGI version with any ASGI server, such as uvicorn:

.. code:: bash

$ pip install falcon httpx uvicorn $ uvicorn things\_advanced\_asgi:app

Contributing

Thanks for your interest in the project! We welcome pull requests from developers of all skill levels. To get started, simply fork the master branch on GitHub to your personal account and then clone the fork into your development environment.

If you would like to contribute but don't already have something in mind, we invite you to take a look at the issues listed under our

next milestone <https:></https:>

_. If you see one you'd like to work on, please leave a quick comment so that we don't end up with duplicated effort. Thanks in advance!

Please note that all contributors and maintainers of this project are subject to our

Code of Conduct <https:></https:>

_.

Before submitting a pull request, please ensure you have added/updated the appropriate tests (and that all existing tests still pass with your changes), and that your coding style follows PEP 8 and doesn't cause pyflakes to complain.

Commit messages should be formatted using

AngularJS conventions <https:></https:>

__.

Comments follow

Google's style guide <https:></https:>

__, with the additional requirement of prefixing inline comments using your GitHub nick and an appropriate prefix:

  • TODO(riker): Damage report!
  • NOTE(riker): Well, that's certainly good to know.
  • PERF(riker): Travel time to the nearest starbase?
  • APPSEC(riker): In all trust, there is the possibility for betrayal.

The core Falcon project maintainers are:

  • Kurt Griffiths, Project Lead (kgriffs on GH, Gitter, and Twitter)
  • John Vrbanac (jmvrbanac on GH, Gitter, and Twitter)
  • Vytautas Liuolia (vytas7 on GH and Gitter, and vliuolia on Twitter)
  • Nick Zaccardi (nZac on GH and Gitter)

Please don't hesitate to reach out if you have any questions, or just need a little help getting started. You can find us in

falconry/dev <https:></https:>

_ on Gitter.

See also:

CONTRIBUTING.md <https:></https:>

__

Legal

Copyright 2013-2020 by Individual and corporate contributors as noted in the individual source files.

Falcon image courtesy of

John O'Neill <https:></https:>

__.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use any portion of the Falcon framework except in compliance with the License. Contributors agree to license their work under the same License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

.. |Docs| image:: https://readthedocs.org/projects/falcon/badge/?version=stable :target: https://falcon.readthedocs.io/en/stable/?badge=stable :alt: Falcon web framework docs .. |Runner| image:: https://a248.e.akamai.net/assets.github.com/images/icons/emoji/runner.png :width: 20 :height: 20 .. |Build Status| image:: https://travis-ci.org/falconry/falcon.svg :target: https://travis-ci.org/falconry/falcon .. |codecov.io| image:: https://codecov.io/gh/falconry/falcon/branch/master/graphs/badge.svg :target: http://codecov.io/gh/falconry/falcon

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