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kennethreitz
4f02016ed6
- Add docstrings to all undocumented public methods across API, Request, Response, Router, Route, BackgroundQueue, and related classes - Expand api.rst with autodoc sections for RouteGroup, BackgroundQueue, QueryDict, and RateLimiter - Update starlette dependency to >=1.0 - Drop Python 3.9 support (required by Starlette 1.0), minimum is now 3.10 - Bump version to 3.4.0 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
131 lines
3.8 KiB
ReStructuredText
131 lines
3.8 KiB
ReStructuredText
Responder
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=========
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A familiar HTTP Service Framework for Python.
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.. code:: python
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import responder
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api = responder.API()
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@api.route("/{greeting}")
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async def greet_world(req, resp, *, greeting):
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resp.text = f"{greeting}, world!"
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if __name__ == '__main__':
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api.run()
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Powered by `Starlette`_, `uvicorn`_, and good intentions. The ``async`` is optional.
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The Idea
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--------
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If you've ever used `Flask`_, the routing will look familiar. If you've
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used `Falcon`_, the request/response pattern will click immediately. And
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if you've used `Requests`_ — well, you'll feel right at home.
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Responder takes these ideas and brings them together. Every view receives
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a request and a response. You read from one and write to the other. No
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return values, no special response classes, no boilerplate.
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- ``resp.text`` sends text. ``resp.html`` sends HTML. ``resp.media`` sends JSON.
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- ``resp.file("path")`` serves a file. ``resp.content`` sends raw bytes.
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- ``req.headers`` is case-insensitive. ``req.params`` holds query parameters.
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- ``resp.status_code``, ``req.method``, ``req.url`` — the familiar ones.
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Set ``resp.media`` to a dict and the right thing happens. If the client
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asks for YAML, it gets YAML. Content negotiation is automatic.
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Responder and `FastAPI`_ are siblings — both built on Starlette, both
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born around the same time, both part of the push that made ASGI the
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future of Python web services. FastAPI went deep on type annotations
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and automatic validation. Responder went for simplicity and a mutable
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request/response pattern. Both projects are better for the other
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existing. Use whichever feels right.
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This is a passion project. It exists because building a web framework
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from scratch is one of the best ways to understand how the web works.
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It's a great fit for personal projects, prototyping, teaching, research,
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and anyone who values a clean API over a sprawling ecosystem. If you
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need battle-tested infrastructure at scale, FastAPI and Django will
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serve you well. If you want something small, expressive, and fun to
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work with — welcome.
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What You Get
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------------
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One ``pip install``, batteries included:
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- Mount Flask, Django, or any WSGI/ASGI app at a subroute.
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- Gzip compression, HSTS, CORS, and trusted host validation.
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- Before-request hooks that can short-circuit for auth guards.
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- A test client for fast, in-process testing with pytest.
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- Route parameters with f-string syntax and type convertors.
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- Lifespan context managers for startup and shutdown logic.
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- Custom exception handlers for clean error responses.
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- `GraphQL`_ with Graphene and a built-in GraphiQL IDE.
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- File serving with automatic content-type detection.
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- Sync and async views — ``async`` is always optional.
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- Class-based views with ``on_get``, ``on_post``, ``on_request``.
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- A pleasant API with a single import statement.
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- OpenAPI schema generation with Swagger UI.
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- A production `uvicorn`_ server, ready to deploy.
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- HTTP method filtering for REST APIs.
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- Signed cookie-based sessions.
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- Background tasks in a thread pool.
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- WebSocket support.
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Installation
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------------
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.. code-block:: shell
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$ uv pip install responder
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Python 3.10 and above. That's it.
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.. toctree::
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:maxdepth: 2
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:caption: User Guide
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quickstart
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tour
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deployment
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testing
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api
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cli
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.. toctree::
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:maxdepth: 2
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:caption: Tutorials
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tutorial-rest
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tutorial-sqlalchemy
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tutorial-auth
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tutorial-websockets
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tutorial-middleware
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tutorial-flask
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guide-config
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.. toctree::
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:maxdepth: 1
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:caption: Project
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changes
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Sandbox <sandbox>
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backlog
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.. _Starlette: https://www.starlette.io/
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.. _uvicorn: https://www.uvicorn.org/
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.. _Flask: https://flask.palletsprojects.com/
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.. _Falcon: https://falconframework.org/
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.. _FastAPI: https://fastapi.tiangolo.com/
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.. _GraphQL: https://graphql.org/
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.. _Requests: https://requests.readthedocs.io/
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