""" Base captcha class  """


class BaseCaptcha(object):

    def generate(self, *args, **kwargs):
        raise NotImplementedError(
            'Subclasses of BaseCaptcha must '
            'override generate() method')

    def verify(self, *args, **kwargs):
        raise NotImplementedError(
            'Subclasses of BaseCaptcha must '
            'override verify() method')

    def _active_for_user(self, user, *args, **kwargs):
        return user.is_dangerous