[{'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:def prep_data(image_path_list):\n    x=[]\n    y=[]\n    for i in image_path_list:\n        x.append(cv2.resize(plt.imread(i), #read then resize image \n        (rows,cols), interpolation=cv2.INTER_CUBIC))  #appened new image to x\n    for j in image_path_list: #create a label and append it to y \n        if 'dog' in j:\n            y.append(1)\n        elif 'cat' in j:\n            y.append(0)\n    return x,y        "}, {'role': 'assistant', 'content': 'data_preprocessing'}]