code: def __iter__(self):
      for block in self.blocks[::-1]:
          yield block
  
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 5 for calling the DataFlow obj's underlying member method code with example usage: obj.__iter__() without return types