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

Status: Open.

#259 In pydata/patsy;

· shenker opened on May 30, 2026

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

Status: Open.

#232 In pydata/patsy;

· carrutstick opened on Aug 7, 2025

Accept to use variable and categorical variable from dataframe index

Status: Open.

#211 In pydata/patsy;

· rknyip opened on Oct 9, 2024

Standardize(x) comes before drop na

Status: Open.

#208 In pydata/patsy;

· michelegentili93 opened on May 28, 2024

0.5.3: pytest is failing in some units

Status: Open.

#194 In pydata/patsy;

· kloczek opened on May 20, 2023

0.5.3: documentation build fails with sphinx 6.2.1

wontfix

Status: Open.

#193 In pydata/patsy;

· kloczek opened on May 20, 2023

Add link to license in readme

Status: Open.

#189 In pydata/patsy;

· darigovresearch opened on Jan 15, 2023

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

Status: Open.

#183 In pydata/patsy;

· alexhallam opened on Mar 28, 2022

Wrote a convenience function for getting variable names from formula

Status: Open.

#171 In pydata/patsy;

· compumetrika opened on May 15, 2021

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

Status: Open.

#166 In pydata/patsy;

· rmwenzel opened on Jan 10, 2021

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

Status: Open.

#161 In pydata/patsy;

· DWesl opened on Aug 30, 2020

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

bug

fixed in formulaic

Status: Open.

#158 In pydata/patsy;

· lebedov opened on Jul 20, 2020