Issues

• VarLookupDict should implement __iter__, causes CPython crash when using statsmodels in marimo notebook

  pydata/patsy#259 · Filter by author shenker opened on May 30, 2026

• build._eval_factor error condition attempts to access attribute dtype on DataFrame object, but no such attribute exists

  pydata/patsy#232 · Filter by author carrutstick opened on Aug 7, 2025
  2

• Accept to use variable and categorical variable from dataframe index

  pydata/patsy#211 · Filter by author rknyip opened on Oct 9, 2024
  1

• Standardize(x) comes before drop na

  pydata/patsy#208 · Filter by author michelegentili93 opened on May 28, 2024

• 0.5.3: pytest is failing in some units

  pydata/patsy#194 · Filter by author kloczek opened on May 20, 2023
  11

• 0.5.3: documentation build fails with sphinx 6.2.1

  wontfix
  pydata/patsy#193 · Filter by author kloczek opened on May 20, 2023
  1

• Add link to license in readme

  pydata/patsy#189 · Filter by author darigovresearch opened on Jan 15, 2023

• Does python have an analogue to R's splines::ns()

  pydata/patsy#183 · Filter by author alexhallam opened on Mar 28, 2022

• Wrote a convenience function for getting variable names from formula

  pydata/patsy#171 · Filter by author compumetrika opened on May 15, 2021
  1

• When passing DataFrame, dmatrices returns design matrix with zero rows using standardize in formula

  pydata/patsy#166 · Filter by author rmwenzel opened on Jan 10, 2021

• Is there a way to get dmatrix to drop all-zero columns?

  pydata/patsy#161 · Filter by author DWesl opened on Aug 30, 2020
  1

• "+ -1" equivalence with "-1" in patsy formula?

  bugfixed in formulaic
  pydata/patsy#158 · Filter by author lebedov opened on Jul 20, 2020
  2

  

• Introducing formulaic, a high-performance patsy "competitor"

  pydata/patsy#157 · Filter by author matthewwardrop opened on Jul 6, 2020
  2

• patsy equivalent of R's all.vars

  pydata/patsy#155 · Filter by author Xiaojieqiu opened on May 18, 2020
  1

• How to construct a polynomial for numerical data?

  pydata/patsy#152 · Filter by author Alalalalaki opened on Sep 15, 2019

• Minor (in?)consistency in terms naming with Treatment scheme

  pydata/patsy#151 · Filter by author m-dz opened on Aug 28, 2019

• I get a blank assertion error as well

  pydata/patsy#150 · Filter by author bhaktatejas922 opened on Jun 12, 2019

• Deferring Evaluation of Terms

  pydata/patsy#149 · Filter by author bashtage opened on Jun 12, 2019
  2

• dmatrices raising “AssertionError”

  pydata/patsy#148 · Filter by author RandomForestRanger opened on Jun 12, 2019
  3

• formula support for categorical endog variable in logistic regression

  pydata/patsy#146 · Filter by author stevenlis opened on May 16, 2019
  1

• Faillure in spline-regression.rst due to "print" with Python 3

  pydata/patsy#143 · Filter by author sergiopasra opened on Feb 13, 2019

• Builtins for numpy recarrays

  pydata/patsy#142 · Filter by author icam0 opened on Feb 4, 2019
  4

• Update "Differences between R and Patsy Formulas" to state that dot on RHS is not supported

  pydata/patsy#134 · Filter by author tmelconian opened on Oct 22, 2018
  1

• ENH: option for nonreplicated exterior knots in b-splines

  pydata/patsy#132 · Filter by author josef-pkt opened on Oct 12, 2018
  2

• How to get Pandas DataFrame with column descriptions?

  pydata/patsy#127 · Filter by author Hoeze opened on Jul 18, 2018