text: # coding=utf-8
  # Copyright 2019 The Google Research Authors.
  #
  # 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.
  
  # 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.
  # ==============================================================================
  """Defining common TPU flags used across all the models."""
  
  from absl import flags
  
  
  def define_common_tpu_flags():
    """Define the flags related to TPU's."""
    flags.DEFINE_string(
        'tpu',
        default=None,
        help='The Cloud TPU to use for training. This should be either the name '
        'used when creating the Cloud TPU, or a grpc://ip.address.of.tpu:8470 '
        'url.')
  
    flags.DEFINE_string(
        'gcp_project',
        default=None,
        help='Project name for the Cloud TPU-enabled project. If not specified, we '
        'will attempt to automatically detect the GCE project from metadata.')
  
    flags.DEFINE_string(
        'tpu_zone',
        default=None,
        help='GCE zone where the Cloud TPU is located in. If not specified, we '
        'will attempt to automatically detect the GCE project from metadata.')
  