prion 0.1.0

Dependency injection framework using pure Python

Prion

A dependency injection framework using pure Python. No external dependencies.

Installation

pip install prion

Usage

Define a container by subclassing Syringe and declaring dependencies with single() or factory().

>>> from prion import Syringe, single, factory

>>> class AppSyringe(Syringe):
...     config: dict = single()
...     session: dict = factory()

Create an instance and register providers using decorators.

>>> syringe = AppSyringe()

>>> @syringe.config
... def create_config() -> dict:
...     return {"debug": True}

>>> @syringe.session
... def create_session() -> dict:
...     return {}

Access dependencies as attributes.

>>> syringe.config is syringe.config
True

>>> syringe.session is not syringe.session
True

Strategies

Strategy	Behavior
single()	Creates once, returns cached
factory()	Creates a new instance each time

License

MIT