Update sklearn_testing.py

Author: sdpython

mlinsights/mlmodel/sklearn_testing.py

@@ -259,6 +259,8 @@ def test_sklearn_grid_search_cv(fct_model, X, y=None, sample_weight=None, **grid
     clf = GridSearchCV(pipe, parameters)
     if y_train is None and w_train is None:
         clf.fit(X_train)
+    elif w_train is None:
+        clf.fit(X_train, y_train)  # pylint: disable=E1121
     else:
         clf.fit(X_train, y_train, w_train)  # pylint: disable=E1121
     score = clf.score(X_test, y_test)