code: def __init__(self, data_dir=current_dir, data_type="all"):
      self.data_dir = data_dir
      self.data_type = data_type
      self.source_url = "DEFALT URL"
      self.partition_num = 10
      self.meta_file = None
      self.origin_files = []
      self.test_start_num = None
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import shutil
  import sys
  import tf_euler
  from euler.tools.generate_euler_data import EulerGenerator
label_desc: Use image node_id 1 to create a new DataSet object from inherited base classes: object with example: obj = DataSet(data_dir, data_type)