class_docstr: Container class for stock datasets.
  
  Arguments:
      filename (str/list): name of the file to download
      url (str): url for dataset
      size (int/list): file size
      path (str): local path to place files
      subset_pct (float/int): percentage of data set to use for training
class_docstr_tok: ["Container","class","for","stock","datasets",".","Arguments",":","filename","(","str\/list",")",":","name","of","the","file","to","download","url","(","str",")",":","url","for","dataset","size","(","int\/list",")",":","file","size","path","(","str",")",":","local","path","to","place","files","subset_pct","(","float\/int",")",":","percentage","of","data","set","to","use","for","training"]
docstr: Method that generates the data set iterators for the
  train, test and validation data sets.  This method
  needs to set the instance data_set attribute to a
  dictionary of data iterators.
  
  Returns:
      dict:  dictionary with the various data set iterators
docstr_tok: ["Method","that","generates","the","data","set","iterators","for","the","train",",","test","and","validation","data","sets",".","This","method","needs","to","set","the","instance","data_set","attribute","to","a","dictionary","of","data","iterators",".","Returns",":","dict",":","dictionary","with","the","various","data","set","iterators"]
code: def gen_iterators(self):
      """
      Method that generates the data set iterators for the
      train, test and validation data sets.  This method
      needs to set the instance data_set attribute to a
      dictionary of data iterators.
  
      Returns:
          dict:  dictionary with the various data set iterators
      """
      raise NotImplemented()
  
imports: from __future__ import division
  from future import standard_library
  from future.moves.urllib.request import Request, urlopen
  import logging
  import os
  import sys
  import zipfile
  from neon import NervanaObject, logger
  from neon.util.compat import PY3
label_desc: Use image node_id 6 for calling the Dataset obj's underlying member method code with example usage: obj.gen_iterators() without return types