patsy 0.5.2

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

# 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](https://github.com/matthewwardrop/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.

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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](http://www.r-project.org/) “formulas” to Python.

[](https://pypi.org/project/spec-classes/)      

• Documentation: <https://patsy.readthedocs.io/>
• Downloads: <http://pypi.python.org/pypi/patsy/>
• Code and issues: <https://github.com/pydata/patsy>
• Mailing list: <[e-mail]> (<http://groups.google.com/group/pydata>)

## 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 setup.py install)

## License

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