python-injection

python-injection

Fast and easy dependency injection framework.

Installation

⚠️ Requires Python 3.12 or higher

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.

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
• Testing
• Advanced usage
• Utils
• Integrations
• Concrete example