[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify code snippets into one of the following categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']."}, {'role': 'user', 'content': 'Identify the single most appropriate category to which the provided code belongs. Provide your response as a single category label without any additional information, commentary, or personal opinions.\\nPython Code:index = 0    \nfig = plt.figure(figsize = (16,10))\nfor item in train_images.values[:20]:\n    index += 1\n    plt.subplot(5, 5, index)\n    test_path = item[2]\n    test_image = load_img(test_path, target_size=(32,32))\n    plt.imshow(test_image)\n    plt.colorbar()\n    plt.grid(False)\n    plt.axis("off")\n    plt.title(class_names[int(item[1])])\nplt.show()'}, {'role': 'assistant', 'content': 'helper_functions'}]