def no_authentication(self):

        return Response(
                'User identity could not be verified.\n'
                'Please login with proper credentials', 401,
                {
                    'WWW-Authenticate': 'Basic realm="Login Required"'
                })
Sends a 401 response that enables basic auth.
dataset/ETHPy150Open ownaginatious/flask-basic-roles/flask_basic_roles/__init__.py/BasicRoleAuth.no_authentication