old_contents: # Copyright 2018 The TensorFlow Authors. 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.
  # ==============================================================================
  """Tools to help with the TensorFlow 2.0 transition.
  
  This module is meant for TensorFlow internal implementation, not for users of
  the TensorFlow library. For that see tf.compat instead.
  """
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  import os
  
  
  _force_enable = False
  
  
  def enable():
    """Enables v2 behaviors."""
    global _force_enable
    _force_enable = True
  
  
  def disable():
    """Disables v2 behaviors (TF2_BEHAVIOR env variable is still respected)."""
    global _force_enable
    _force_enable = False
  
  
  def enabled():
    """Returns True iff TensorFlow 2.0 behavior should be enabled."""
    return _force_enable or os.getenv("TF2_BEHAVIOR") is not None
  
new_contents: # Copyright 2018 The TensorFlow Authors. 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.
  # ==============================================================================
  """Tools to help with the TensorFlow 2.0 transition.
  
  This module is meant for TensorFlow internal implementation, not for users of
  the TensorFlow library. For that see tf.compat instead.
  """
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  import os
  
  
  _force_enable = False
  
  
  def enable():
    """Enables v2 behaviors."""
    global _force_enable
    _force_enable = True
  
  
  def disable():
    """Disables v2 behaviors (TF2_BEHAVIOR env variable is still respected)."""
    global _force_enable
    _force_enable = False
  
  
  def enabled():
    """Returns True iff TensorFlow 2.0 behavior should be enabled."""
    return _force_enable or os.getenv("TF2_BEHAVIOR", "0") != "0"
  
subject: Make TF2_BEHAVIOR=0 disable TF2 behavior.