def invalidate_access_token(self, at):
        if constants.DELETE_EXPIRED:
            at.delete()
        else:
            at.expires = timedelta(days=1) - now()
            at.save()
dataset/ETHPy150Open caffeinehit/django-oauth2-provider/provider/oauth2/views.py/AccessTokenView.invalidate_access_token/swapped operands of `-`