code: def __getitem__(self, idx):
      return self.blocks[::-1][idx]
  
file_path: euler/tf_euler/python/dataflow/base_dataflow.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
label_desc: Use image node_id 4 for calling the DataFlow obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: self