class_docstr: Abstract class for cifar readers
class_docstr_tok: ["Abstract","class","for","cifar","readers"]
docstr: Return two lists of train and test filenames for dataset
docstr_tok: ["Return","two","lists","of","train","and","test","filenames","for","dataset"]
code: def get_filenames(self, save_path):
      """Return two lists of train and test filenames for dataset"""
      raise NotImplementedError
  
imports: import tempfile
  import os
  import pickle
  import random
  import numpy
  from ..data_providers.base_provider import ImagesDataSet, DataProvider
  from ..data_providers.downloader import download_data_url
label_desc: Use image node_id 6 for calling the CifarDataProvider obj's underlying member method code with example usage: obj.get_filenames(save_path) without return types