client

client = client.Client(
  url=(get_from_env('url', 'GREMLIN_URI', url)),
  traversal_source=traversal_source,
  username=(get_from_env('username', 'GREMLIN_USERNAME', username)),
  password=(get_from_env('password', 'GREMLIN_PASSWORD', password)),
  message_serializer=(message_serializer if message_serializer else serializer.GraphSONSerializersV2d0())
)