[{'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:file_names = [\'ncicancer_input_kernel.txt\',\n\'ncicancer_bin_targets.txt\',\n\'ncicancer_targets.txt\',\n\'ncicancer_cancerCL_corr.txt\']\ndata = []\n\' We import each dataset and append it to the list "data" \'\nfor file in file_names:\ntry:\ndata.append(np.loadtxt(\'data/data_clean/\'+file))\nprint(\'%s loaded.\' %file)\nexcept:\nprint(\'Error: %s not loaded.\' %file)'}, {'role': 'assistant', 'content': 'load_data'}]