[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify the code snippets into categories from the provided list of categories. List of categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']"}, {'role': 'user', 'content': 'Identify to which category the provided code belongs and assign the code snippet to at least 1 but up to 5 categories based on the probabilities, ignore if the probability of the category is negligible. Strictly provide your response as a list. Avoid providing any additional information, commentary, or personal opinions.\\nPython Code:b"city_rev = []\\n\\nfor i in full_data[\'City_Cluster\']:\\n    for key, value in mean_dict.items():\\n        if i == key:\\n            city_rev.append(value)\\n            \\ndf_city_rev = pd.DataFrame({\'city_rev\':city_rev})\\nfull_data = pd.concat([full_data,df_city_rev],axis=1)\\nfull_data.head\\n\\n# \\nnominal_list.extend([\'City_Cluster\'])\\n# \\nnominal_list.remove(\'City\')\\n"'}, {'role': 'assistant', 'content': "['helper_functions', 'comment_only']"}]