def get_consent():
    if args.yes is True:
        return True
    while True:
        res = input("OK to proceed? [y/n] ")
        if res.lower() not in {"y", "n", "yes", "no"}:
            print('Please answer "yes" or "no".', file=sys.stderr)
        elif res.lower() in {"y", "yes"}:
            return True
        else:
            return False