I was mainly thinking about the 'taskq' replacement before, but the names are still pretty ugly.

Do you like this better or something similar?
  get_queue_names(queue_service)
  get_queue_names(queue_service, mode="push")
  get_queue_names(queue_service, mode="pull")

(In the sdk, google code uses "mode" as the attribute name indicating "push" or "pull")