来源：prettytable

	confusion_matrix = [[0 for j in range(4)] for i in range(4)]
    for i, j in zip(new_predicted, new_targets):
        confusion_matrix[i][j] += 1
    tb = pt.PrettyTable( ["predicted\\label", 'class1', 'class2', 'class3', 'class4'])
    for i in range(4):
        tb.add_row([class_list[i]] + confusion_matrix[i])
    print(tb)