- vertices: (list[T]) The list of vertex names the client wants to pass in. Default is empty. - edges: (list[list[T]]) The list of edges the client wants to pass in. Each edge is a 2-element list.

#compare the first element ('j[0]') of the Tuple with the data the node is storing to determine which if endnode_and_cost_set in self.graph_dictionary[startnode]: ...