[{'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:def tag_values(f):\ntags = {}\nfor ev, elem in xET.iterparse(f):\ntag = elem.tag\nif tag not in tags.keys():\ntags[tag] = {}\nif elem.tag == 'way' or elem.tag == 'node': # Specify parent tag to filter nested tag list\nfor t in elem.iter('tag'):\nif t.attrib['k'] in tags[tag].keys():\ntags[tag][t.attrib['k']] = tags[tag][t.attrib['k']] + 1\nelse:\ntags[tag][t.attrib['k']] = 1\nreturn tags\ndef get_tag_values():\ntags = tag_values(SAMPLE_NAME)\nprint(tags)\nget_tag_values()"}, {'role': 'assistant', 'content': 'data_exploration'}]