text: # ----------------------------------------------------------------------------
  # -                        Open3D: www.open3d.org                            -
  # ----------------------------------------------------------------------------
  # The MIT License (MIT)
  #
  # Copyright (c) 2020 www.open3d.org
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  # IN THE SOFTWARE.
  # ----------------------------------------------------------------------------
  """Tensorflow specific machine learning functions."""
  import os as _os
  from tensorflow import __version__ as _tf_version
  from open3d import _build_config
  
  if not _build_config["Tensorflow_VERSION"]:
      raise Exception('Open3D was not built with Tensorflow support!')
  
  _o3d_tf_version = _build_config["Tensorflow_VERSION"].split('.')
  if _tf_version.split('.')[:2] != _o3d_tf_version[:2]:
      _o3d_tf_version[2] = '*'  # Any patch level is OK
      match_tf_ver = '.'.join(_o3d_tf_version)
      raise Exception('Version mismatch: Open3D needs Tensorflow version {}, but'
                      ' version {} is installed!'.format(match_tf_ver,
                                                         _tf_version))
  
  from . import layers
  from . import ops
  
  # put framework independent modules here for convenience
  from . import configs
  from . import datasets
  from . import vis
  
  # framework specific modules from open3d-ml
  from . import models
  from . import modules
  from . import pipelines
  from . import dataloaders
  
  # put contrib at the same level
  from open3d.ml import contrib
  