class_docstr: Abstract class for batch of environments inside the TensorFlow graph.
    
class_docstr_tok: ["Abstract","class","for","batch","of","environments","inside","the","TensorFlow","graph","."]
docstr: Access an underlying environment by index.
docstr_tok: ["Access","an","underlying","environment","by","index","."]
code: def __getitem__(self, index):
      """Access an underlying environment by index."""
      return self._batch_env[index]
  
file_path: tensor2tensor/tensor2tensor/rl/envs/in_graph_batch_env.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import gym
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the InGraphBatchEnv obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self