[{'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:df.shape\nfeather_path = "uncb_data_2003_2016.feather"\nfeather.write_dataframe(df, feather_path)\nprint("Feather file successfully written!")\ndf2 = feather.read_dataframe(feather_path)\ndf2.shape'}, {'role': 'assistant', 'content': 'save_results'}]