old_contents: # Copyright 2020 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.
  # ==============================================================================
  """Canonical source for common axis types.
  
  We need to make sure that `Batch` in one module means the same as `Batch` in
  another module. Since we verify equality of axis types based on the identity of
  the type, that means that both modules need to import and use the same `Batch`
  type. We therefore provide this file as the canonical reference for axis types
  that are likely to be used widely.
  """
  
  
  class Axis:
    """Base type for axis annotations.
  
    User-defined axis types should subclass this.
    """
    pass
  
  
  # These could be more compactly specified with typing.NewType,
  # but pytype doesn't currently support NewType in stubs:
  # https://github.com/google/pytype/issues/597
  
  
  class Batch(Axis):
    pass
  
  
  class Channels(Axis):
    pass
  
  
  class Features(Axis):
    pass
  
  
  class Time(Axis):
    pass
  
  
  class Height(Axis):
    pass
  
  
  class Width(Axis):
    pass
  
  
  class Depth(Axis):
    pass
  
new_contents: # Copyright 2020 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.
  # ==============================================================================
  """Canonical source for common axis types.
  
  We need to make sure that `Batch` in one module means the same as `Batch` in
  another module. Since we verify equality of axis types based on the identity of
  the type, that means that both modules need to import and use the same `Batch`
  type. We therefore provide this file as the canonical reference for axis types
  that are likely to be used widely.
  """
  
  from typing import NewType
  
  
  class Axis:
    """Base type for axis annotations.
  
    User-defined axis types should subclass this.
    """
    pass
  
  
  Batch = NewType('Batch', Axis)
  Channels = NewType('Channels', Axis)
  Features = NewType('Features', Axis)
  Time = NewType('Time', Axis)
  Height = NewType('Height', Axis)
  Width = NewType('Width', Axis)
  Depth = NewType('Depth', Axis)
  
subject: Define common axes using NewType