Jubilant

Jubilant is a Python library that wraps the Juju CLI, primarily for use in charm integration tests. It provides methods that map 1:1 to Juju CLI commands, but with a type-annotated, Pythonic interface.

You should consider switching to Jubilant if your integration tests currently use pytest-operator (and they probably do). Jubilant has an API you’ll pick up quickly, and it avoids some of the pain points of python-libjuju, such as websocket failures and having to use async. Read our design goals.

Jubilant 1.0.0 was released in April 2025. We will avoid making breaking changes to the API after this point.

The library provides:

• The main jubilant.Juju class, with methods such as deploy and integrate

• The Juju.wait method, which waits for a condition such as “all apps active”

• Status helpers such as jubilant.all_active, for use with Juju.wait

• Context managers such as jubilant.temp_model, for use in test setup and teardown

In this documentation

Tutorial

Start here: a hands-on introduction to Jubilant, including how to write a charm integration test

How-to guides

Step-by-step guides covering key operations and common tasks

• Migrate from pytest-operator

Reference

Technical information

• API reference

Explanation

Discussion and clarification of key topics

• Design goals

Releases

Jubilant releases are tracked on GitHub, and use semantic versioning. To get notified when there’s a new release, watch the Jubilant repository.

Project and community

Jubilant is free software and released under the Apache license, version 2.0.

The Jubilant project is sponsored by Canonical Ltd.

• Code of conduct

• Contribute to the project

• Development: how to make changes to Jubilant and run its tests