improve backward compatibility

Quantco · Dec 8, 2023 · bb0a188 · bb0a188
1 parent 447c348
commit bb0a188
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/glum/_glm.py b/src/glum/_glm.py
@@ -2662,7 +2662,7 @@ def _set_up_and_check_fit_args(
         copy_X = self._should_copy_X()
 
         if isinstance(X, pd.DataFrame):
-            if self.formula is not None:
+            if hasattr(self, "formula") and self.formula is not None:
                 lhs, rhs = _parse_formula(
                     self.formula, include_intercept=self.fit_intercept
                 )