[{'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:# Splitting 01/31/2018 as 01, 31, 2018\ntrain_date=data['Open Date'].str.split('/', n = 2, expand = True)\ndata['month']=train_date[0]\ndata['days']=train_date[1]\ndata['year']=train_date[2]\n\ntest_date=test_data['Open Date'].str.split('/', n = 2, expand = True)\ntest_data['month']=test_date[0]\ntest_data['days']=test_date[1]\ntest_data['year']=test_date[2]\ndata['month']\n"}, {'role': 'assistant', 'content': "['data_preprocessing']"}]