Singleton Python Packages

dependency-injector

Dependency injection framework for Python

singleton-decorator

A testable singleton decorator

tendo

Official repository of python tendo library, always welcoming new contributions.

solus

Singleton types.

dependency-injector2

Dependency injection framework for Python

dependency-injector-fork

Dependency injection framework for Python

oncequinox

micro-library for making Equinox singletons

container-app-conf

Convenient configuration of containerized applications

sentinel-value

Sentinel Values - unique global singleton objects, akin to None, NotImplemented and Ellipsis.

hmt-dependency-injector

Dependency injection framework for Python

nsingleton

Just another singleton pattern implementation. Thread-safe, with type casting.

singletonify

singleton pattern for python

singleton-pattern-decorator

Singleton pattern decorator for Python

meeseeks-singleton

A Singleton python project

deps-injection

Dependency injection, works with FastAPI, Litestar, Django, Flask (Python 3.8-3.13). Light replacement with new features for dependency-injector

smalldi

Tiny, zero-dependency DI for Python. Decorators register singletons and interfaces, Provide[T] type hints inject them, overrides swap implementations, and scoped contexts give every test fresh instances. Thread-safe and tested on free-threaded CPython 3.14t/3.15t.

injex

Tiny typed dependency injection for Python: explicit wiring, graph validation, zero deps, fast resolves.

atbu-common-pkg

ATBU common classes, exceptions, utility classes/functions.

hb-config

hb-config: easy to configure your python project especially Deep Learning experiments

monostate

Dependency-free python package, providing monostate owner base class through implementation of the borg pattern

typed-sentinels

Statically-typed sentinel objects with singleton qualities.

singletonize

Singletonize is a lightweight Python library for implementing the Singleton pattern efficiently, supporting both standard and ABC-based approaches.

single-process

Limit python script just run a single process, support python3

disdantic

`disdantic` is a lightweight Python toolkit designed to simplify Pydantic subclass registries, dynamic polymorphic unions, and automatic model discovery. By eliminating the manual boilerplate of maintaining union types and tracking child class imports, it allows you to build clean, extensible, and self-updating polymorphic domain models.