flaxon 0.1.9

A technology-neutral, async-first Python backend framework

Flaxon

Flaxon combines Flask-like ease, structured large-application development, async-first networking, readable debugging, optional Jinja2 templates, and complete freedom over your frontend and client technologies.

check out the docs on website below ⬇️⬇️⬇️⬇️

Visit Flaxon Website

from flaxon import Flaxon

app = Flaxon("my-api", debug=True)

@app.get("/")
async def home():
    return {"message": "Hello from Flaxon"}

@app.get("/users/<int:user_id>")
async def get_user(user_id: int):
    return {"id": user_id, "name": "Example User"}

Features

• Async-first ASGI architecture — Built for high-concurrency I/O workloads
• Flask-style route decorators — Familiar and intuitive
• Optional modular structure — Start simple, scale to large applications
• Request validation — Declarative schemas with automatic 422 responses
• WebSocket support — Real-time communication with room broadcasting
• Jinax templates — Optional Jinja2 integration (lazy-loaded)
• Middleware stack — CORS, request IDs, security headers, rate limiting
• Readable debugger — Explains failures in plain language
• Technology neutral — Use any frontend, database, ORM, or client
• CLI tools — Run, inspect, doctor, and generate projects
• Testing utilities — Sync and async test clients

Quick Start

🚀 Installation

Install the published package via pip:

pip install flaxon

Or with just the core:

pip install flaxon

Or clone the repository locally:

Bash git clone https://github.com/aldanedev-create/Flaxon-Backend-Framework.git

Create an application

# app.py
from flaxon import Flaxon

app = Flaxon("hello-world", debug=True)

@app.get("/")
async def home():
    return {"message": "Hello, World!"}

Run it

flaxon run app:app --reload

Visit http://localhost:8000 to see your API.

Documentation

• Full Documentation
• Quick Start Guide
• API Reference
• Examples

Example: Validation

from flaxon import Flaxon
from flaxon.validation import Schema, fields

app = Flaxon("user-api")

class CreateUser(Schema):
    name = fields.String(required=True, min_length=2)
    email = fields.Email(required=True)
    age = fields.Integer(minimum=13, maximum=120)

@app.post("/users")
async def create_user(data: CreateUser):
    return {"success": True, "user": data.to_dict()}

Example: WebSocket Chat

@app.websocket("/ws/chat/<room_id>")
async def chat(socket, room_id: str):
    await socket.accept()
    await socket.join(room_id)

    async for message in socket.iter_json():
        await socket.broadcast_json(room_id, {
            "event": "chat.message",
            "data": message,
            "room": room_id,
        })

Example: Optional Templates (Jinax)

from flaxon import Flaxon
from flaxon.jinax import Jinax

app = Flaxon("website", debug=True)
app.use_templates(Jinax("templates", auto_reload=True))

@app.get("/")
async def home(request):
    return await request.render("home.html", {
        "title": "Welcome",
        "products": await product_service.list()
    })

💡 Quick Start Example

Small example Flaxon application: a server-rendered HTML Todo list.

Uses Jinax (Flaxon's Jinja2 integration) to render templates/todos.html, plain HTML <form> elements for adding/toggling/deleting todos, and redirect-after-post so refreshing the page never resubmits a form.

Run the App

flaxon run todo_html:app --reload
# or
uvicorn todo_html:app --reload

Then open http://localhost:8000/ in your browser

todo_html.py See Below: ⬇️⬇️
```python

from __future__ import annotations

from urllib.parse import parse_qs

from flaxon import Flaxon
from flaxon.exceptions import NotFound
from flaxon.http.response import RedirectResponse
from flaxon.jinax import Jinax

app = Flaxon("todo-html", debug=True)
app.use_templates(Jinax("templates", auto_reload=True))

todos: list[dict] = []
next_id = 1


@app.get("/")
async def home(request):
    return await request.render("todos.html", {"todos": todos})


@app.post("/todos")
async def create_todo(request):
    global next_id
    body = (await request.body()).decode("utf-8")
    form = parse_qs(body, keep_blank_values=True)
    title = form.get("title", [""])[0].strip()
    if title:
        todos.append({"id": next_id, "title": title, "done": False})
        next_id += 1
    return RedirectResponse("/", status_code=303)


@app.post("/todos/<int:todo_id>/toggle")
async def toggle_todo(todo_id: int):
    for todo in todos:
        if todo["id"] == todo_id:
            todo["done"] = not todo["done"]
            return RedirectResponse("/", status_code=303)
    raise NotFound(f"No todo with id {todo_id}")


@app.post("/todos/<int:todo_id>/delete")
async def delete_todo(todo_id: int):
    for i, todo in enumerate(todos):
        if todo["id"] == todo_id:
            todos.pop(i)
            return RedirectResponse("/", status_code=303)
    raise NotFound(f"No todo with id {todo_id}")

templates/todos.html : See Below ⬇️⬇️💡

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Flaxon Todos</title>
  <style>
    body { font-family: system-ui, sans-serif; max-width: 480px; margin: 3rem auto; color: #222; }
    h1 { font-size: 1.4rem; }
    form.add { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
    form.add input[type=text] { flex: 1; padding: 0.5rem; font-size: 1rem; }
    form.add button { padding: 0.5rem 1rem; }
    ul { list-style: none; padding: 0; }
    li { display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0; border-bottom: 1px solid #eee; }
    li form { display: inline; margin: 0; }
    li .title { flex: 1; }
    li .done .title { text-decoration: line-through; color: #999; }
    button.link { background: none; border: none; color: #666; cursor: pointer; padding: 0.2rem 0.4rem; }
    button.link:hover { color: #000; }
    .empty { color: #888; }
  </style>
</head>
<body>
  <h1>Flaxon Todos</h1>

  <form class="add" method="post" action="/todos">
    <input type="text" name="title" placeholder="What needs doing?" required>
    <button type="submit">Add</button>
  </form>

  {% if todos %}
  <ul>
    {% for todo in todos %}
    <li class="{{ 'done' if todo.done else '' }}">
      <form method="post" action="/todos/{{ todo.id }}/toggle">
        <button type="submit" class="link">{{ "☑" if todo.done else "☐" }}</button>
      </form>
      <span class="title">{{ todo.title }}</span>
      <form method="post" action="/todos/{{ todo.id }}/delete">
        <button type="submit" class="link">✕</button>
      </form>
    </li>
    {% endfor %}
  </ul>
  {% else %}
  <p class="empty">No todos yet — add one above.</p>
  {% endif %}
</body>
</html>

Philosophy

Simple applications remain simple; large applications gain structure without losing technology choice.

• Small applications start in one file without generators or mandatory architecture
• Large applications can introduce routers, services, middleware, and plugins
• HTML rendering is optional; JSON APIs are a first-class default
• Framework APIs are explicit enough to debug and profile without hidden magic

Comparative Overview

Feature	Flask	Django	Node.js	Flaxon
Async core	❌	⚠️	✅	✅
Flask-style routing	✅	❌	⚠️	✅
Optional structure	❌	❌	⚠️	✅
WebSocket support	⚠️	❌	✅	✅
Technology neutral	✅	❌	✅	✅
Readable debugging	⚠️	⚠️	⚠️	✅
Mobile backend ready	⚠️	❌	✅	✅

Production Readiness

Flaxon is currently in alpha. It is suitable for evaluation, experimentation, and learning. Production use is possible with careful testing and monitoring, but the API is not yet stable.

Roadmap

• 0.2 — Protocol hardening, multipart uploads, ASGI conformance
• 0.3 — Sessions, OpenAPI, health checks, logging
• 0.4 — Plugin system, SQLAlchemy, Redis, authentication
• 0.5 — Distributed tasks, queues, Redis broadcast
• 1.0 — Stable API, security audit, production-ready

Contributing

We welcome contributions! Please see our Contributing Guide.

git clone https://github.com/aldanedev-create/Flaxon-Backend-Framework.git
cd Flaxon-Backend-Framework
python -m venv .venv
source .venv/bin/activate
pip install -e ".[standard,dev]"
pytest

License

MIT License — see LICENSE for details.

Community

• GitHub Issues