[{'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:import xml.etree.cElementTree as xET\nfrom collections import defaultdict\nimport csv\nimport os\nimport pprint\nimport re\nimport codecs\nimport json\nimport ast\nOSM_NAME = "seattle_washington.osm"\nOSM_FILE = open(OSM_NAME, "rb")\nSAMPLE_NAME = "seattle_sample.osm"  # k = 30\nSAMPLE_FILE = open(SAMPLE_NAME, "rb")\nSMALL_SAMPLE_NAME = "seattle_small_sample.osm"  # k = 900\nSMALL_SAMPLE_FILE = open(SMALL_SAMPLE_NAME, "rb")\nst_types = defaultdict(set)\nk = 900  # Larger number, small sample\ndef get_element(OSM_NAME, tags=(\'node\', \'way\', \'relation\')):\n"""Yield element if it is the right type of tag\nReference:\nhttp://stackoverflow.com/questions/3095434/inserting-newlines-in-xml-file-generated-via-xml-etree-elementtree-in-python\n"""\ncontext = xET.iterparse(OSM_NAME, events=(\'start\', \'end\'))\n_, root = next(context)\nfor event, elem in context:\nif event == \'end\' and elem.tag in tags:\nyield elem\nroot.clear()\ndef create_sample():\nwith open(SMALL_SAMPLE_NAME, \'wb\') as output:\noutput.write(bytes(\'<?xml version="1.0" encoding="UTF-8"?>\\n\', encoding="utf-8"))\noutput.write(bytes(\'<osm>\\n  \', encoding="utf-8"))\nfor i, element in enumerate(get_element(OSM_NAME)):\nif i % k == 0:\noutput.write(xET.tostring(element, encoding=\'utf-8\'))\noutput.write(bytes(\'</osm>\', encoding="utf-8"))\nprint(SMALL_SAMPLE_NAME, \'created:\')\nprint(\'File size: \', file_size(SMALL_SAMPLE_NAME))\ndef convert_bytes(num):\n"""\nthis function will convert bytes to MB.... GB... etc\nReference:\nhttp://stackoverflow.com/questions/2104080/how-to-check-file-size-in-python\n"""\nfor x in [\'bytes\', \'KB\', \'MB\', \'GB\', \'TB\']:\nif num < 1024.0:\nsize = "%3.1f %s" % (num, x)\nreturn size\nnum /= 1024.0\ndef file_size(SMALL_SAMPLE_NAME):\n"""\nthis function will return the file size\nReference:\nhttp://stackoverflow.com/questions/2104080/how-to-check-file-size-in-python\n"""\nfile_info = os.stat(SMALL_SAMPLE_NAME)\nsize = convert_bytes(file_info.st_size)\nreturn size\ncreate_sample()'}, {'role': 'assistant', 'content': 'load_data'}]