def _parse_roles(self):
        """
        Generate a dictionary for configured roles from oslo_config.

        Due to limitations in ini format, it's necessary to specify
        roles in a flatter format than a standard dictionary. This
        function serves to transform these roles into a standard
        python dictionary.
        """
        roles = {}
        for keystone_role, flask_role in self.config.roles.items():
            roles.setdefault(flask_role, set()).add(keystone_role)
        return roles
def _parse_roles ( self ) : roles = { } for keystone_role , flask_role in self . config . roles . items ( ) : roles . setdefault ( flask_role , set ( ) ) . add ( keystone_role ) return roles
Generate a dictionary for configured roles from oslo_config.

        Due to limitations in ini format, it's necessary to specify
        roles in a flatter format than a standard dictionary. This
        function serves to transform these roles into a standard
        python dictionary.