new_contents: # python3
  # Copyright 2018 DeepMind Technologies Limited. All rights reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """JAX type definitions for imitation and apprenticeship learning algorithms."""
  
  from typing import TypeVar
  
  # Common TypeVars that correspond to various aspects of the direct RL algorithm.
  DirectPolicyNetwork = TypeVar('DirectPolicyNetwork')
  DirectRLNetworks = TypeVar('DirectRLNetworks')
  DirectRLTrainingState = TypeVar('DirectRLTrainingState')
  
subject: Define common TypeVars for IL/AL algorithms.