(self)
return list(self.node_links.keys())
Return node list.
        
        @rtype:  list
        @return: Node list.
Return node list.
Return node list .
def nodes(self):
        """
        Return node list.
        
        @rtype:  list
        @return: Node list.
        """
        return list(self.node_links.keys())
def nodes ( self ) : return list ( self . node_links . keys ( ) )