buhl/python-di

di - A Python dependency injection module

di - Python Dependency Injection

What?

di.DependencyInjector is a python class with which you can register dependencies and later wrap/decorate functions and methods. python-di's home is on https://github.com/buhl/python-di

Why?

Dependency Injection was the new black some months/years ago. So it's time I got around to understand the concepts. At the momment, I am deep into Python and loving it, so I used it to play around with DI.

Personally, I haven't used this module yet. But I can see a couple of places it might be useful. For now I will let it mature a bit - perhabs with help from you?

Features

• Wraps function/method and resolves dependencies when called
• Looks for dependencies in the di object and function/methods globals() if activated

Quick start

Install:

$ pip install https://github.com/buhl/python-di/archive/master.zip

Import class and initialize:

from di import DependencyInjector
di = DependencyInjector()

Register dependencies:

di.register_dependency('sum_list_of_ints', sum)

Wrap function and call it:

@di
def calc_sum(list_of_ints, sum_list_of_ints):
    return sum_list_of_ints(list_of_ints)

assert calc_sum([1,2,3,4]) == 10  # True

Search in globals:

@di(globals_lookup=True)
def calc_sum2(list_of_ints, sum_list_of_ints):
    return sum_list_of_ints(list_of_ints)

list_of_ints = [1,2,3,4]

assert calc_sum2() == 10  # True

Uninstall (why would you??):

$ pip uninstall python-di

Contributing

Contributions are more than welcome. I would also love to know how you are using this module.