[{'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:plt.figure(figsize=(6,10))\ntrain_df[\'eval_set\'] = "train"\ntest_df[\'eval_set\'] = "test"\nfull_df = pd.concat([train_df[["ID","eval_set"]], test_df[["ID","eval_set"]]], axis=0)\nplt.figure(figsize=(12,6))\nsns.violinplot(x="eval_set", y=\'ID\', data=full_df)\nplt.xlabel("eval_set", fontsize=12)\nplt.ylabel(\'y\', fontsize=12)\nplt.title("Distribution of ID variable with evaluation set", fontsize=15)\nplt.show()'}, {'role': 'assistant', 'content': 'data_exploration'}]