Samplewise metrics are not available outside of multilabel classification.

Raise code

      n_labels = len(labels)
        labels = np.hstack([labels, np.setdiff1d(present_labels, labels,
                                                 assume_unique=True)])

    if y_true.ndim == 1:
        if samplewise:
            raise ValueError("Samplewise metrics are not available outside of "
                             "multilabel classification.")

        le = LabelEncoder()
        le.fit(labels)
        y_true = le.transform(y_true)
        y_pred = le.transform(y_pred)
        sorted_labels = le.classes_

        # l