🧩 5 - Working on your own extension

🎯 Session Format¶

This is an open exploration session. You’ll choose a project that interests you and work on it with instructor support. Don’t worry about finishing - the goal is to practice the development workflow and problem-solving.

💡 Extension Ideas¶

JupyterLab Extension Ideas

Community Extensions¶

Jupyterlab-contrib Jupyter Marketplase

Frontend Extensions¶

Beginner-Friendly: TBD Intermediate: TBD

Extensions with Server Components¶

Beginner-Friendly: TBD

Intermediate: TBD

🔧 Key JupyterLab APIs¶

Commonly Used Tokens/Services:¶

For Server Extensions:¶

• Jupyter Server Handlers: Documentation

• Tornado Request Handlers: Tornado Docs

🐛 Beginner-Friendly GitHub¶

Want to contribute to JupyterLab itself? Here are good first issues:

JupyterLab Core:

• Good First Issues

• Documentation Issues

Extension Template:

• Extension Template Issues

📚 Essential Resources¶

Documentation:¶

• JupyterLab Extension Developer Guide

• JupyterLab API Reference

• Jupyter Server Extension Guide

Code Examples:¶

• Extension Examples Repository - 40+ example extensions

• JupyterLab GitHub - Core extensions source code

Tools:¶

• Browser DevTools - Debug frontend

• Run JupyterLab with --debug to see more server side details

🚀 Getting Started Checklist¶

• Choose an extension idea (or GitHub issue)

• Create extension from template (if new project)

• Identify which JupyterLab APIs you’ll need

• Look up API documentation and examples

• Set up development environment #TODO: links and jlpm commands for quick reference

• Start coding!

• Test frequently (jupyter lab --dev-mode) #TODO: watch for iterative dev

• Ask instructors for help when stuck

💬 Getting Help¶

During this session:

• Raise your hand for instructor help

• Discuss with neighbors

• Zulip for real-time chat

After the tutorial:

• JupyterLab Discourse - Community forum

• Zulip Chat - Continue conversing with the Jupyter Community!

• Stack Overflow