Skrub

Judgement

What it is

Building block

What it does

A Python library that prepares messy DataFrames for scikit-learn, encoding text and categories, joining tables and building pipelines.

Adopt it when

You train scikit-learn models on real-world tables with dirty categories and several related tables.

Watch out

It is pre-1.0 and its API is still changing between releases.

Ready for

Usable

Runs as

Library

Built with

Python, scikit-learn, pandas and Polars

How established

Established: started 8 years ago, latest release 0.11.0.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Skrub → CPython → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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