patsy: patsy (A Python library for describing statistical models) patsy: patsy: Patsy (A Python library for describing statistical models) patsy: especially linear models, or models that have a linear component) patsy: and building design matrices. Patsy brings the convenience patsy: of R "formulas" to Python. patsy: patsy: patsy: patsy: patsy: https://patsy.readthedocs.org/en/latest/