Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.

A port of Ruby on Rails' inflector to Python

A lightweight, object-oriented finite state machine implementation in Python with many extensions

Expects is an expressive and extensible TDD/BDD assertion library for Python.

The definitive testing tool for Python. Born under the banner of Behavior Driven Development (BDD).

A framework for managing and maintaining multi-language pre-commit hooks.