Update metalearners/_narwhals_utils.py

kklein · FBruzzesi · web-flow · commit ae7f613d1eae · 2025-02-27T12:39:34.000+01:00
Co-authored-by: Francesco Bruzzesi &lt;42817048+FBruzzesi@users.noreply.github.com&gt;
diff --git a/metalearners/_narwhals_utils.py b/metalearners/_narwhals_utils.py
@@ -29,7 +29,7 @@ def nw_to_dummies(
     if set(categories) < set(x.unique()):
         raise ValueError("We observed a value which isn't part of the categories.")
 
-    if any(x.is_null()):
+    if x.is_null().any():
         raise ValueError(
             "Can only apply nw_to_dummies on a narwhals Series without null values."
         )

Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,7 @@ def nw_to_dummies(`
`29`	`29`	`if set(categories) < set(x.unique()):`
`30`	`30`	`raise ValueError("We observed a value which isn't part of the categories.")`
`31`	`31`
`32`		`- if any(x.is_null()):`
	`32`	`+ if x.is_null().any():`
`33`	`33`	`raise ValueError(`
`34`	`34`	`"Can only apply nw_to_dummies on a narwhals Series without null values."`
`35`	`35`	`)`