Engin is a zero-dependency application framework for modern Python.
Documentation: https://engin.readthedocs.io/
- Dependency Injection - Engin includes a fully-featured Dependency Injection system, powered by type hints.
- Lifecycle Management - Engin provides a simple & portable approach for attaching startup and shutdown tasks to the application's lifecycle.
- Code Reuse - Engin's modular components, called Blocks, work great as distributed packages allowing zero boiler-plate code reuse across multiple applications. Perfect for maintaining many services across your organisation.
- Ecosystem Compatability - Engin ships with integrations for popular frameworks that provide their own Dependency Injection, for example FastAPI, allowing you to integrate Engin into existing code bases incrementally.
- Async Native: Engin is an async framework, meaning first class support for async dependencies. However Engin will happily run synchronous code as well.
Engin is available on PyPI, install using your favourite dependency manager:
- pip:
pip install engin - poetry:
poetry add engin - uv:
uv add engin
A minimal example:
import asyncio
from httpx import AsyncClient
from engin import Engin, Invoke, Provide
def httpx_client() -> AsyncClient:
return AsyncClient()
async def main(http_client: AsyncClient) -> None:
print(await http_client.get("https://httpbin.org/get"))
engin = Engin(Provide(httpx_client), Invoke(main))
asyncio.run(engin.run())