reroute 0.2.1

File-based routing for Python backend frameworks (FastAPI, Flask)

REROUTE

File-based routing for Python backends - Inspired by Next.js, powered by FastAPI/Flask

REROUTE brings the simplicity of file-based routing to Python backend development. Just create files in folders, and they automatically become API endpoints.

Features

• File-based Routing: Folder structure maps directly to URL paths
• Class-based Routes: Clean, organized route handlers with lifecycle hooks
• Parameter Injection: FastAPI-style parameter extraction (Query, Path, Header, Body, etc.)
• Pydantic Models: Generate data validation models with CLI
• Framework Adapters: Works with FastAPI (Flask, Django support coming)
• Interactive CLI: Next.js-style project scaffolding with beautiful prompts
• Code Generation: Quickly generate routes, CRUD operations, models, and tests
• Environment Config: .env file support with auto-loading
• Secure by Default: Built-in security best practices and sanitization
• Powerful Decorators: Rate limiting, caching, validation, and more
• API Versioning: Built-in support for base path prefixes (e.g., /api/v1)

Installation

pip install reroute

Quick Start

# Create a new project
reroute init myapi

# Navigate to project
cd myapi

# Install dependencies (modern approach)
uv sync

# Or traditional approach
pip install -r requirements.txt

# Run the server
python main.py

Visit http://localhost:7376/docs for interactive API documentation.

Documentation

📚 Complete Documentation - Full guides, API reference, and examples

Quick links:

• Getting Started - Installation and first route
• CLI Commands - Complete CLI reference
• API Reference - RouteBase, parameters, decorators, config
• Examples - CRUD, authentication, rate limiting, caching
• Contributing - How to contribute to REROUTE

How It Works

REROUTE uses your folder structure to create API routes. Each folder becomes a URL path, and each page.py file defines the route handlers.

app/routes/hello/page.py → /hello
app/routes/users/page.py → /users
app/routes/posts/page.py → /posts

API Versioning with Base Path: Instead of creating nested folders, use API_BASE_PATH in config:

# config.py
API_BASE_PATH = "/api/v1"

Now your routes are automatically prefixed:

app/routes/users/page.py → /api/v1/users
app/routes/posts/page.py → /api/v1/posts

Key Concepts

File-based Routing

Your folder structure is your API structure. No manual route registration needed.

Class-based Routes

Each route is a Python class with methods for HTTP verbs (get, post, put, delete, etc.).

Lifecycle Hooks

Routes support before_request, after_request, and on_error hooks for common patterns.

Configuration

Every project has a config.py file to customize server settings, routing behavior, and more.

API Versioning

Use API_BASE_PATH to prefix all routes (e.g., /api/v1).

Framework Support

• FastAPI - Fully supported with OpenAPI docs
• Flask - Coming soon

License

Apache License 2.0

Contributing

We welcome contributions! See CONTRIBUTING.md for guidelines.

Support

• Documentation: https://cbsajan.github.io/reroute-docs
• Issues: GitHub Issues
• PyPI: pypi.org/project/reroute

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