text: #!/usr/bin/python
  #
  # Copyright 2015 Google Inc. 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.
  
  """Retrieves all languages and carriers available for targeting.
  
  The LoadFromStorage method is pulling credentials and properties from a
  "googleads.yaml" file. By default, it looks for this file in your home
  directory. For more information, see the "Caching authentication information"
  section of our README.
  
  """
  
  
  from googleads import adwords
  
  
  def main(client):
    # Initialize appropriate service.
    constant_data_service = client.GetService(
        'ConstantDataService', version='v201509')
  
    # Get all languages.
    languages = constant_data_service.getLanguageCriterion()
  
    # Display results.
    for language in languages:
      print ('Language with name \'%s\' and ID \'%s\' was found.'
             % (language['name'], language['id']))
  
    # Get all carriers.
    carriers = constant_data_service.getCarrierCriterion()
  
    # Display results.
    for carrier in carriers:
      print ('Carrier with name \'%s\', ID \'%s\', and country code \'%s\' was '
             'found.' % (carrier['name'], carrier['id'], carrier['countryCode']))
  
  
  if __name__ == '__main__':
    # Initialize client object.
    adwords_client = adwords.AdWordsClient.LoadFromStorage()
  
    main(adwords_client)
  