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A Python package for describing statistical models and for building design matrices.

Project description

# Patsy

Notice: patsy is no longer under active development. As of August 2021, Matthew Wardrop (@matthewwardrop) and Tomás Capretto (@tomicapretto) have taken on responsibility from Nathaniel Smith (@njsmith) for keeping the lights on, but no new feature development is planned. The spiritual successor of this project is [Formulaic](, and we recommend those interested in new feature development contribute there. Those whose use-cases continue to be met by patsy can continue using this package with increased confidence that things will continue to work as is for the foreseeable future.

Patsy is a Python library for describing statistical models (especially linear models, or models that have a linear component) and building design matrices. Patsy brings the convenience of [R]( “formulas” to Python.

[![PyPI - Version](]( ![PyPI - Python Version]( ![]( ![PyPI - Status]( ![]( ![]( ![](

## Dependencies

  • Python (2.6, 2.7, or 3.3+)

  • six

  • numpy

  • Optional: * pytest/pytest-cov: needed to run tests * scipy: needed for spline-related functions like bs

## Installation

pip install patsy (or, for traditionalists: python install)

## License

2-clause BSD, see LICENSE.txt for details.

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