Dependency Injector — Dependency injection microframework for Python

Dependency Injector is a dependency injection microframework for Python. It was designed to be a unified and developer-friendly tool that helps implement a dependency injection design pattern in a formal, pretty, and Pythonic way.

The key features of the Dependency Injector framework are:

• Easy, smart, and pythonic style.
• Obvious and clear structure.
• Extensibility and flexibility.
• High performance.
• Memory efficiency.
• Thread safety.
• Documented.
• Semantically versioned.

Dependency Injector containers and providers are implemented as C extension types using Cython.

Status

PyPi
Python versions and implementations
Builds and tests coverage
Github

Contents

• Introduction
  • What is dependency injection and inversion of control?
  • Dependency injection and inversion of control in Python
  • Key features of Dependency Injector
  • Structure of Dependency Injector
• Installation
• Providers
  • Factory providers
  • Singleton providers
  • Callable providers
  • Coroutine providers
  • Object providers
  • Dependency providers
  • Overriding of providers
  • Writing of custom providers
• IoC Containers
  • Declarative containers
  • Dynamic containers
  • Specialization of containers
  • Overriding of containers
• Examples
  • Movie lister naive example
  • Services mini application example (v1 - multiple containers)
  • Services mini application example (v2 - single container)
  • Bundles mini application example
  • Use cases mini application example
  • Dependency injection and password hashing in Python
  • Chained Factories pattern
  • Factory of Factories pattern
• API Documentation
  • dependency_injector
  • dependency_injector.providers
  • dependency_injector.containers
  • dependency_injector.errors
• Feedback
• Changelog
  • 3.15.4
  • 3.15.3
  • 3.15.2
  • 3.15.1
  • 3.15.0
  • 3.14.12
  • 3.14.11
  • 3.14.10
  • 3.14.9
  • 3.14.8
  • 3.14.7
  • 3.14.6
  • 3.14.5
  • 3.14.4
  • 3.14.3
  • 3.14.2
  • 3.14.1
  • 3.14.0
  • 3.13.2
  • 3.13.1
  • 3.13.0
  • 3.12.4
  • 3.12.3
  • 3.12.2
  • 3.12.1
  • 3.12.0
  • 3.11.3
  • 3.11.2
  • 3.11.1
  • 3.11.0
  • 3.10.0
  • 3.9.1
  • 3.9.0
  • 3.8.2
  • 3.8.1
  • 3.8.0
  • 3.7.1
  • 3.7.0
  • 3.6.1
  • 3.6.0
  • 3.5.0
  • 3.4.8
  • 3.4.7
  • 3.4.6
  • 3.4.5
  • 3.4.4
  • 3.4.3
  • 3.4.2
  • 3.4.1
  • 3.4.0
  • 3.3.7
  • 3.3.6
  • 3.3.5
  • 3.3.4
  • 3.3.3
  • 3.3.2
  • 3.3.1
  • 3.3.0
  • 3.2.5
  • 3.2.4
  • 3.2.3
  • 3.2.2
  • 3.2.1
  • 3.2.0
  • 3.1.5
  • 3.1.4
  • 3.1.3
  • 3.1.2
  • 3.1.1
  • 3.1.0
  • 3.0.1
  • 3.0.0
  • 2.2.10
  • 2.2.9
  • 2.2.8
  • 2.2.7
  • 2.2.6
  • 2.2.5
  • 2.2.4
  • 2.2.3
  • 2.2.2
  • 2.2.1
  • 2.2.0
  • 2.1.1
  • 2.1.0
  • 2.0.0
  • 1.17.0
  • 1.16.8
  • 1.16.7
  • 1.16.5
  • 1.16.4
  • 1.16.1
  • 1.15.2
  • 1.15.1
  • 1.15.0
  • 1.14.11
  • 1.14.10
  • 1.14.9
  • 1.14.8
  • 1.14.7
  • 1.14.6
  • 1.14.5
  • 1.14.4
  • 1.14.3
  • 1.14.2
  • 1.14.1
  • 1.14.0
  • 1.13.2
  • 1.13.1
  • 1.13.0
  • 1.12.0
  • 1.11.2
  • 1.11.1
  • 0.11.0
  • 0.10.5
  • 0.10.4
  • 0.10.3
  • 0.10.2
  • 0.10.1
  • 0.10.0
  • 0.9.5
  • 0.9.4
  • 0.9.3
  • 0.9.2
  • 0.9.1
  • 0.8.1
  • 0.7.8
  • 0.7.7
  • 0.7.6
  • Previous versions