[{'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:ranges = [0, 49, 54, 59, 64, 69, 74, 79, 150]\nlabels = ['Under 50','50-55','55-60','60-65', '65-70', '70-75', '75-80', 'Over 80']\ndf_le_clean['LEB'] = pd.cut(df_le_clean['LEatBirth'], ranges, labels=labels).astype('category')\ndf_le_clean['LE60-Adj'] = pd.cut(df_le_clean['LEat60-Adj'], ranges, labels=labels).astype('category')\ndf_le_clean['HALE'] = pd.cut(df_le_clean['HALEatBirth'], ranges, labels=labels).astype('category')"}, {'role': 'assistant', 'content': 'data_preprocessing'}]