under:

Quantifying classifier performance

predictions = classifier.predict(X)

cm = metrics.confusion_matrix(y, predictions, labels=classifier.classes_)

disp = metrics.ConfusionMatrixDisplay(confusion_matrix=cm,display_labels=classifier.classes_)

disp.plot()

plt.show()

metrics.plot_confusion_matrix(classifier, X_test, y_test, display_labels=iris.target_names[0:2])



instead