ruff-jupyter-diff-inflation

Ruff inflates Jupyter notebook diffs because running `ruff check --fix` rewrites the internal JSON cell source fields, causing structural notebook churn that turns a small unused-import cleanup into a massive pull request with hundreds of changed lines.

To exclude .ipynb files from Ruff lint fixes, update your Ruff configuration by adding Jupyter notebooks to the `extend-exclude` setting. This skips notebooks entirely, ensuring the lint scope is limited to your intended Python files and preventing structural notebook churn.

To revert Jupyter notebooks modified by Ruff formatting, perform a git rollback of the already modified notebook files. This undoes the structural JSON changes and verifies that your future lint scope remains limited to the intended Python files.

Yes, you can run Ruff lint cleanup without touching committed Jupyter notebooks by configuring the `extend-exclude` setting in Ruff. This skips notebooks entirely, allowing focused Python lint cleanup in mixed repositories without causing structural notebook churn.

Notebook diff inflation occurs when Ruff rewrites Jupyter notebook cell source fields during a standard lint fix. Applying Ruff configuration changes to exclude `.ipynb` files prevents the tool from normalizing the notebook JSON structure and inflating the patch size.