pynjector

Pynjector

A lightweight Dependency Injection (DI) container for Python that allows automatic resolution of dependencies based on constructor type hints.

🚀 Features

• Simple and intuitive API
• Automatic dependency resolution based on type hints
• Supports binding classes, factory functions, and pre-initialized instances
• Inspired by C#'s dependency injection approach

📦 Installation

Install via pip:

pip install pynjector

Install via poetry:

poetry add pynjector

🎯 Usage

from src.pynjector import DIContainer


class Database:
    def query(self) -> str:
        return "Data from Database"


class Service:
    def __init__(self, db: Database):
        self.db = db

    def get_data(self) -> str:
        return self.db.query()


# Create the pynjector
container = DIContainer()

# Register dependencies
container.bind(Database)

# Resolve a service instance
service = container.resolve(Service)

print(service.get_data())  # Output: "Data from Database"