[{'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:fd_trans = os.path.join(data_dir, "Transactions.h5")\nprint(fd_trans)\nfd_atc = os.path.join(data_dir, "Lookups", "ATC_LookUp.txt")\nprint(fd_atc)\nfd_ci = os.path.join(data_dir, "Lookups", "ChronicIllness_LookUp.txt")\nprint(fd_ci)\nfd_drugs = os.path.join(data_dir, "Lookups", "Drug_LookUp.txt")\nprint(fd_drugs)\nfd_patients = os.path.join(data_dir, "Lookups", "patients.txt")\nprint(fd_patients)\nfd_stores = os.path.join(data_dir, "Lookups", "stores.txt")\nprint(fd_stores)'}, {'role': 'assistant', 'content': 'load_data'}]