# python-injection
[](https://github.com/100nm/python-injection)
[](https://pypi.org/project/python-injection/)
[](https://github.com/astral-sh/ruff)
Fast and easy dependency injection framework.
## Installation
⚠️ _Requires Python 3.12 or higher_
```bash
pip install python-injection
```
## Motivations
1. Easy to use
2. No impact on class and function definitions
3. Easily interchangeable dependencies _(depending on the runtime environment, for example)_
4. No prerequisites
## Quick start
Simply apply the decorators and the package takes care of the rest.
```python
from injection import injectable, inject, singleton
@singleton
class Printer:
def __init__(self):
self.history = []
def print(self, message: str):
self.history.append(message)
print(message)
@injectable
class Service:
def __init__(self, printer: Printer):
self.printer = printer
def hello(self):
self.printer.print("Hello world!")
@inject
def main(service: Service):
service.hello()
if __name__ == "__main__":
main()
```
## Resources
* [**Basic usage**](https://github.com/100nm/python-injection/tree/prod/documentation/basic-usage.md)
* [**Testing**](https://github.com/100nm/python-injection/tree/prod/documentation/testing.md)
* [**Advanced usage**](https://github.com/100nm/python-injection/tree/prod/documentation/advanced-usage.md)
* [**Utils**](https://github.com/100nm/python-injection/tree/prod/documentation/utils.md)
* [**Integrations**](https://github.com/100nm/python-injection/tree/prod/documentation/integrations.md)
* [**Concrete example**](https://github.com/100nm/python-injection/tree/prod/documentation/example)
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"description": "# python-injection\n\n[](https://github.com/100nm/python-injection)\n[](https://pypi.org/project/python-injection/)\n[](https://github.com/astral-sh/ruff)\n\nFast and easy dependency injection framework.\n\n## Installation\n\n\u26a0\ufe0f _Requires Python 3.12 or higher_\n\n```bash\npip install python-injection\n```\n\n## Motivations\n\n1. Easy to use\n2. No impact on class and function definitions\n3. Easily interchangeable dependencies _(depending on the runtime environment, for example)_\n4. No prerequisites\n\n## Quick start\n\nSimply apply the decorators and the package takes care of the rest.\n\n```python\nfrom injection import injectable, inject, singleton\n\n@singleton\nclass Printer:\n def __init__(self):\n self.history = []\n\n def print(self, message: str):\n self.history.append(message)\n print(message)\n\n@injectable\nclass Service:\n def __init__(self, printer: Printer):\n self.printer = printer\n\n def hello(self):\n self.printer.print(\"Hello world!\")\n\n@inject\ndef main(service: Service):\n service.hello()\n\nif __name__ == \"__main__\":\n main()\n```\n\n## Resources\n\n* [**Basic usage**](https://github.com/100nm/python-injection/tree/prod/documentation/basic-usage.md)\n* [**Testing**](https://github.com/100nm/python-injection/tree/prod/documentation/testing.md)\n* [**Advanced usage**](https://github.com/100nm/python-injection/tree/prod/documentation/advanced-usage.md)\n* [**Utils**](https://github.com/100nm/python-injection/tree/prod/documentation/utils.md)\n* [**Integrations**](https://github.com/100nm/python-injection/tree/prod/documentation/integrations.md)\n* [**Concrete example**](https://github.com/100nm/python-injection/tree/prod/documentation/example)\n",
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