https://github.com/neetjn/python-inject-practice

Practice with python dependency injection using python-inject @ https://github.com/ivankorobkov/python-inject
https://github.com/neetjn/python-inject-practice

dependency dependency-injection inject python python-inject

Last synced: 12 days ago
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Practice with python dependency injection using python-inject @ https://github.com/ivankorobkov/python-inject

• Host: GitHub
• URL: https://github.com/neetjn/python-inject-practice
• Owner: neetjn
• License: mit
• Created: 2019-03-01T15:31:15.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-04-10T18:10:41.000Z (over 5 years ago)
• Last Synced: 2024-10-28T16:54:04.217Z (2 months ago)
• Topics: dependency, dependency-injection, inject, python, python-inject
• Language: Python
• Size: 22.5 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# python-inject-practice

> Practice with python dependency injection using python-inject @ https://github.com/ivankorobkov/python-inject

This project was created to learn how to perform dependency injection, the pythonic way using [**python-inject**](https://github.com/ivankorobkov/python-inject). I'll be recording my thoughts and experiments in this repository.

## Experiments

* "instance" injection using **python-inject**. This injection strategy allows me to pull a binded dependency by object type from my injector given my configuration. See: [instance_injection.py](https://github.com/neetjn/python-inject-practice/instance_injection.py)

* "attribute" injection using **python-inject**. This injection strategy allows me to bind a dependency from my injector into class instances. See: [attribute_injection.py](https://github.com/neetjn/python-inject-practice/attribute_injection.py)

* "param" injection using **python-inject**. This injection strategy allows me to inject dependencies into methods by param position or key. See: [param_injection.py](https://github.com/neetjn/python-inject-practice/param_injection.py)

## What I've Learned

> Preface: Until recently (3/1/2019) I've never *knowingly* used dependency injection. The design pattern was not something I was consciously aware of, however I leverage it almost daily in both personal projects and in production.

* Dependency injection is more of a development pattern than anything else.

* Contrary to my original confusion, there are multiple ways of tackling dependency injection.

* Angular.js, which I've been actively using for the past couple of years, revolves around dependency injection:

  ```

  angular.module('myModule', [])

    .factory('serviceId', ['depService', depService => {

      // ...

    }])*

  ```

* DI with **python-inject** can be very powerful with proper context control. IoC can also be incredibly helpful when using asynchronous code.

## Resources

* Wikipedia (Dependency injection) - https://en.wikipedia.org/wiki/Dependency_injection

* baeldung (IoC and Dependency Injection in Spring) - https://www.baeldung.com/inversion-control-and-dependency-injection-in-spring

* angularjs/docs - https://docs.angularjs.org/guide/di

* pinject - https://github.com/google/pinject

* preslav (Dependency Injection In Python - The Java Guy's Perspective) - https://preslav.me/2018/12/20/dependency-injection-in-python/

___

Copyright (c) 2019 John Nolette Licensed under the MIT License.