---
id: jupyter-contrib-core
version: "0.4.2"
license: BSD 3-clause
license_treatment: permissive
maintenance: active
---

# jupyter-contrib-core — Common utilities for jupyter-contrib projects.

License: permissive · Maintenance: active · Downloads: 495.5K/mo

## What it is and what it does

jupyter-contrib-core is a shared library for the jupyter-contrib ecosystem, providing compatibility utilities and common components used by multiple Jupyter notebook extensions. It bridges API differences across Jupyter notebook versions (particularly 4.0, 4.1, and 4.2), offers command-line application scaffolding, and includes testing utilities for extension developers.

The package is primarily a dependency for other jupyter-contrib projects rather than a direct end-user tool. It has no runtime dependencies and is designed to be lightweight, but carries high install friction. With no releases since 2022-11-15 and a repository showing recent activity, it may face compatibility issues with newer Jupyter versions.

Use it for:

- Developing Jupyter notebook extensions that need to support multiple notebook versions
- Building jupyter-contrib ecosystem projects that share common utilities and CLI scaffolding
- Writing tests for Jupyter extensions using the provided testing utilities and environment helpers
- Accessing the nbextension API in a version-agnostic way across notebook 4.0, 4.1, and 4.2

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides common utilities, API compatibility shims, and test helpers for jupyter-contrib projects, smoothing over differences in Jupyter notebook versions.

Yes, if you are developing jupyter-contrib extensions or need version-agnostic nbextension APIs. No, if you are an end user—this is a library for extension developers. Conditional: verify compatibility with your Jupyter notebook version before installing, as the last release predates recent notebook versions.

## Install

pip install jupyter-contrib-core
uv add jupyter-contrib-core
poetry add jupyter-contrib-core

## Installing jupyter-contrib-core

Before you install: High install friction with no runtime dependencies. Last release was 2022-11-15, though the repository remains active with recent commits. Installation may require resolving Jupyter notebook version conflicts.

License in practice: BSD 3-clause license is permissive, allowing commercial and private use with minimal restrictions—suitable for most projects.

Quickstart:

pip install jupyter-contrib-core

from jupyter_contrib_core import nbextensions
from jupyter_contrib_core.testing_utils import jupyter_env

Requires a compatible Jupyter notebook installation; version compatibility issues may arise depending on your notebook version.

Verify before relying:

- Whether the package works with current Jupyter notebook versions given the last release was 2022-11-15
- Python version support is unspecified in the fact sheet
- Whether high install friction is due to missing dependencies or build-time compilation requirements

## Package facts

- License: BSD 3-clause (permissive)
- Python support: unspecified
- Install friction: high
- Maintenance: active
- Downloads: 495.5K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

jupyter contrib utilities, notebook extension compatibility, jupyter testing utilities, nbextension api shim, jupyter version compatibility, jupyter contrib core, notebook 4.2 compatibility, jupyter-ecosystem, extension-development, compatibility-shim

[View on SkillFed](https://skillfed.io/packages/jupyter-contrib-core) · [View on PyPI](https://pypi.org/project/jupyter-contrib-core/)