that-depends 1.7.0

Simple Dependency Injection framework

"That Depends"

This package is dependency injection framework for Python, mostly inspired by python-dependency-injector.

It is production-ready and gives you the following:

• Fully-async simple DI framework with IOC-container.
• Python 3.10-3.12 support.
• Full coverage by types annotations (mypy in strict mode).
• FastAPI and Litestar compatibility.
• Zero dependencies.
• Overriding dependencies for tests.

Main characteristics:

1. Fully async -> means every dependency resolving is async, so you should construct with await keyword:

from tests.container import DIContainer

async def main():
    some_dependency = await DIContainer.independent_factory()

2. No wiring for injections in function arguments -> achieved by decision that only one instance of container is supported

from tests import container
from that_depends import Provide, inject


@inject
async def some_function(
        independent_factory: container.SimpleFactory = Provide[container.DIContainer.independent_factory],
) -> None:
    assert independent_factory.dep1

Quickstart

Install

pip install that-depends