[{'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:#Importing libraries\nimport pandas as pd\nimport numpy as np\nimport matplotlib.pyplot as plt \nimport seaborn as sns\nfrom scipy.stats import chi2_contingency\nfrom scipy.stats import spearmanr\n%matplotlib inline\nimport itertools\nimport os\nimport calendar\nfrom datetime import datetime\nfrom scipy import stats\nfrom scipy.special import inv_boxcox\nfrom sklearn.preprocessing import StandardScaler\nfrom sklearn.model_selection import train_test_split as split\nfor dirname, _, filenames in os.walk('/kaggle/input'):\n    for filename in filenames:\n        print(os.path.join(dirname, filename))\n"}, {'role': 'assistant', 'content': 'helper_functions'}]