py3njection 1.1

A dependency injection module using python 3 annotations

How to use

from py3njection import inject
from some_package import ClassToInject

class Demo:
    @inject
    def __init__(self, object_to_use: ClassToInject):
        self.dependency = object_to_use

demo = Demo()

How does it work ?

The decorator @inject looks for any annotated method/function parameters (return annotation excluded).

It creates a new object from the specified class if no object is already provided.

How to install

It’s available on PyPI !

pip install py3injection

Some Notes

• Unit tests come easy to set up (unless you have too many dependencies, but that would be a code smell, right ?). Juste specify mock instances at your object creation. Examples will come later.

• This also means the injected object could also have some of its members injected too at their initialization !