jupyterlite-core

What it is and what it does

jupyterlite-core is the foundation package for JupyterLite, a system that packages Jupyter environments to run entirely in a web browser without a backend server. It provides the CLI tool (jupyter-lite) and the build infrastructure needed to create and deploy JupyterLite websites, along with extension points for custom addons. The package depends on doit (a task automation tool), jupyter-core (Jupyter's base utilities), and pycparser (a C parser for handling low-level dependencies).

This is primarily a build-time and deployment tool for developers and site maintainers who want to create browser-based Jupyter environments. It's not a runtime library for end users of Jupyter notebooks, but rather the toolchain that powers the creation of such environments.

Use it for:

• Build and deploy a JupyterLite website that runs Jupyter notebooks in the browser without a server.
• Create custom JupyterLite addons and extensions using the documented extension points.
• Automate the build process for browser-based Jupyter environments using the jupyter-lite CLI.
• Package Python environments with Pyodide to run scientific code directly in the browser.
• Host interactive documentation or educational materials as a serverless Jupyter interface.

Worth the install?

AI-flagged interpretation of the facts on this page — verify before relying

Provides the core build and CLI infrastructure for JupyterLite, a browser-based Jupyter environment that runs in the browser without a server.

Yes, if you are building or deploying JupyterLite sites or custom addons. The package is actively maintained, has low install friction, carries a permissive license, and supports current Python versions. It has no known vulnerabilities. Install only if you need the build toolchain; end users of JupyterLite sites do not need this package.

Install

jupyterlite-core on PyPI

pip install jupyterlite-core

uv add jupyterlite-core

poetry add jupyterlite-core

Installing jupyterlite-core

Before you install

Low friction install with active maintenance. Released recently (37 days ago) with a stable repository (4871 stars) and current Python version support (3.10–3.14). Three runtime dependencies—doit, jupyter-core, pycparser—are all lightweight.

License in practice

BSD 3-Clause License permits commercial and private use with minimal restrictions; you must retain copyright and license notices in source distributions.

Quickstart

pip install jupyterlite-core

from jupyterlite_core import __version__
print(__version__)

# Or use the CLI:
# jupyter lite build --help

Requires Python 3.10 or later.

Verify before relying

• Whether the package includes pre-built binaries or requires compilation of pycparser on installation.
• Whether doit is used only at build time or also required at runtime for end users.

Package facts

Evidence: jupyterlite_core-0.8.1-py3-none-any.whl

Keywords: browser, doit, js, jupyter, jupyterlab, notebook, pyodide, schema

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