python import spiff data = spiff.read_csv('data.csv') cleaned_data = spiff.clean(data) transformed_data = spiff.transform(cleaned_data) filtered_data = spiff.filter(transformed_data, condition) sorted_data = spiff.sort(filtered_data, key) aggregated_data = spiff.aggregate(sorted_data, key, func) spiff.save_csv(aggregated_data, 'processed_data.csv')