text: # Copyright 2015 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.
  # ==============================================================================
  import os
  from IPython.lib import passwd
  
  c.NotebookApp.ip = '*'
  c.NotebookApp.port = int(os.getenv('PORT', 8018))
  c.NotebookApp.open_browser = False
  c.MultiKernelManager.default_kernel_name = 'python2'
  c.NotebookApp.notebook_dir = '/jupyter/'
  # sets a password if PASSWORD is set in the environment
  if 'JUPYTER_PASSWORD' in os.environ:
    password = os.environ['JUPYTER_PASSWORD']
    if password:
      c.NotebookApp.password = passwd(password)
    else:
      c.NotebookApp.password = ''
      c.NotebookApp.token = ''
    del os.environ['JUPYTER_PASSWORD']
  