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JupyterLab Code Formatter

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library 3.0.3 ·python
verified Apr 17, 2026

jupyterlab-code-formatter is a JupyterLab plugin that integrates popular code formatters (like Black, isort, Ruff, yapf, autopep8) directly into the JupyterLab IDE. It allows users to format their Python code within notebooks and script files via a context menu, menu bar, or keyboard shortcuts. The current version, 3.0.3, is designed for JupyterLab 3.x and 4.x, leveraging its modern extension system. It maintains an active development cycle with regular updates.

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