[{'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:dataset_test['weeklySales'] = predicted_test\ndataset_test['Date'] = column_date\ndataset_test['id'] = dataset_test['Store'].astype(str) + '_' +  dataset_test['Dept'].astype(str) + '_' +  dataset_test['Date'].astype(str)\ndataset_test = dataset_test[['id', 'weeklySales']]\ndataset_test = dataset_test.rename(columns={'id': 'Id', 'weeklySales': 'Weekly_Sales'})"}, {'role': 'assistant', 'content': "['data_preprocessing']"}]