def _confirm_prompt(message, prompt="\nAre you sure? [y/yes (default: no)]: ",
                    affirmations=("Y", "Yes", "yes", "y")):
    """
    Display a message, then confirmation prompt, and return true
    if the user responds with one of the affirmations.
    """
    answer = input(message + prompt)
    return answer in affirmations