code: def confirm_answer(self, answer, message=None):
          
          if message is None:
              message = "\nYou entered {0}.  Is this correct?".format(answer)
          return self.prompt_for_yes_or_no(message)
docs: Prompts the user to confirm a question with a yes/no prompt.
          If no message is specified, the default message is:  "You entered {}. Is this correct?"
          :param answer: the answer to confirm.
          :param message: a message to display rather than the default message.
          :return: True if the user confirmed Yes, or False if user specified No.