some new features

.venv/lib/python3.12/site-packages/statsmodels/compat/patsy.py

@@ -0,0 +1,16 @@
+from statsmodels.compat.pandas import PD_LT_2
+
+import pandas as pd
+import patsy.util
+
+
+def _safe_is_pandas_categorical_dtype(dt):
+    if PD_LT_2:
+        return pd.api.types.is_categorical_dtype(dt)
+    return isinstance(dt, pd.CategoricalDtype)
+
+
+def monkey_patch_cat_dtype():
+    patsy.util.safe_is_pandas_categorical_dtype = (
+        _safe_is_pandas_categorical_dtype
+    )