old_contents: # Copyright 2015 Google Inc. All Rights Reserved.
  
  """AppRTC Constants.
  
  This module contains the constants used in AppRTC Python modules.
  """
  import os
  
  ROOM_MEMCACHE_EXPIRATION_SEC = 60 * 60 * 24
  MEMCACHE_RETRY_LIMIT = 100
  
  LOOPBACK_CLIENT_ID = 'LOOPBACK_CLIENT_ID'
  
  # TODO: Remove once clients support ICE_SERVER.
  TURN_BASE_URL = 'https://computeengineondemand.appspot.com'
  TURN_URL_TEMPLATE = '%s/turn?username=%s&key=%s'
  CEOD_KEY = '4080218913'
  
  ICE_SERVER_BASE_URL = 'https://networktraversal.googleapis.com'
  ICE_SERVER_URL_TEMPLATE = '%s/v1alpha/iceconfig?key=%s'
  ICE_SERVER_API_KEY = os.environ.get('ICE_SERVER_API_KEY')
  
  
  # Dictionary keys in the collider instance info constant.
  WSS_INSTANCE_HOST_KEY = 'host_port_pair'
  WSS_INSTANCE_NAME_KEY = 'vm_name'
  WSS_INSTANCE_ZONE_KEY = 'zone'
  WSS_INSTANCES = [{
      WSS_INSTANCE_HOST_KEY: 'apprtc-ws.webrtc.org:443',
      WSS_INSTANCE_NAME_KEY: 'wsserver-std',
      WSS_INSTANCE_ZONE_KEY: 'us-central1-a'
  }, {
      WSS_INSTANCE_HOST_KEY: 'apprtc-ws-2.webrtc.org:443',
      WSS_INSTANCE_NAME_KEY: 'wsserver-std-2',
      WSS_INSTANCE_ZONE_KEY: 'us-central1-f'
  }]
  
  WSS_HOST_PORT_PAIRS = [ins[WSS_INSTANCE_HOST_KEY] for ins in WSS_INSTANCES]
  
  # memcache key for the active collider host.
  WSS_HOST_ACTIVE_HOST_KEY = 'wss_host_active_host'
  
  # Dictionary keys in the collider probing result.
  WSS_HOST_IS_UP_KEY = 'is_up'
  WSS_HOST_STATUS_CODE_KEY = 'status_code'
  WSS_HOST_ERROR_MESSAGE_KEY = 'error_message'
  
  RESPONSE_ERROR = 'ERROR'
  RESPONSE_ROOM_FULL = 'FULL'
  RESPONSE_UNKNOWN_ROOM = 'UNKNOWN_ROOM'
  RESPONSE_UNKNOWN_CLIENT = 'UNKNOWN_CLIENT'
  RESPONSE_DUPLICATE_CLIENT = 'DUPLICATE_CLIENT'
  RESPONSE_SUCCESS = 'SUCCESS'
  RESPONSE_INVALID_REQUEST = 'INVALID_REQUEST'
  
  IS_DEV_SERVER = os.environ.get('APPLICATION_ID', '').startswith('dev')
  
  BIGQUERY_URL = 'https://www.googleapis.com/auth/bigquery'
  
  # Dataset used in production.
  BIGQUERY_DATASET_PROD = 'prod'
  
  # Dataset used when running locally.
  BIGQUERY_DATASET_LOCAL = 'dev'
  
  # BigQuery table within the dataset.
  BIGQUERY_TABLE = 'analytics'
  
new_contents: # Copyright 2015 Google Inc. All Rights Reserved.
  
  """AppRTC Constants.
  
  This module contains the constants used in AppRTC Python modules.
  """
  import os
  
  ROOM_MEMCACHE_EXPIRATION_SEC = 60 * 60 * 24
  MEMCACHE_RETRY_LIMIT = 100
  
  LOOPBACK_CLIENT_ID = 'LOOPBACK_CLIENT_ID'
  
  # TODO: Remove once clients support ICE_SERVER.
  TURN_BASE_URL = 'https://computeengineondemand.appspot.com'
  TURN_URL_TEMPLATE = '%s/turn?username=%s&key=%s'
  CEOD_KEY = '4080218913'
  
  ICE_SERVER_BASE_URL = 'https://networktraversal.googleapis.com'
  ICE_SERVER_URL_TEMPLATE = '%s/v1alpha/iceconfig?key=%s'
  ICE_SERVER_API_KEY = os.environ.get('ICE_SERVER_API_KEY')
  
  # Dictionary keys in the collider instance info constant.
  WSS_INSTANCE_HOST_KEY = 'host_port_pair'
  WSS_INSTANCE_NAME_KEY = 'vm_name'
  WSS_INSTANCE_ZONE_KEY = 'zone'
  WSS_INSTANCES = [{
      WSS_INSTANCE_HOST_KEY: 'apprtc-ws.webrtc.org:443',
      WSS_INSTANCE_NAME_KEY: 'wsserver-std',
      WSS_INSTANCE_ZONE_KEY: 'us-central1-a'
  }, {
      WSS_INSTANCE_HOST_KEY: 'apprtc-ws-2.webrtc.org:443',
      WSS_INSTANCE_NAME_KEY: 'wsserver-std-2',
      WSS_INSTANCE_ZONE_KEY: 'us-central1-f'
  }]
  
  WSS_HOST_PORT_PAIRS = [ins[WSS_INSTANCE_HOST_KEY] for ins in WSS_INSTANCES]
  
  # memcache key for the active collider host.
  WSS_HOST_ACTIVE_HOST_KEY = 'wss_host_active_host'
  
  # Dictionary keys in the collider probing result.
  WSS_HOST_IS_UP_KEY = 'is_up'
  WSS_HOST_STATUS_CODE_KEY = 'status_code'
  WSS_HOST_ERROR_MESSAGE_KEY = 'error_message'
  
  RESPONSE_ERROR = 'ERROR'
  RESPONSE_ROOM_FULL = 'FULL'
  RESPONSE_UNKNOWN_ROOM = 'UNKNOWN_ROOM'
  RESPONSE_UNKNOWN_CLIENT = 'UNKNOWN_CLIENT'
  RESPONSE_DUPLICATE_CLIENT = 'DUPLICATE_CLIENT'
  RESPONSE_SUCCESS = 'SUCCESS'
  RESPONSE_INVALID_REQUEST = 'INVALID_REQUEST'
  
  IS_DEV_SERVER = os.environ.get('APPLICATION_ID', '').startswith('dev')
  
  BIGQUERY_URL = 'https://www.googleapis.com/auth/bigquery'
  
  # Dataset used in production.
  BIGQUERY_DATASET_PROD = 'prod'
  
  # Dataset used when running locally.
  BIGQUERY_DATASET_LOCAL = 'dev'
  
  # BigQuery table within the dataset.
  BIGQUERY_TABLE = 'analytics'
  
subject: remove new line