* An implementation suggested by [[Guido van Rossum]] uses a [[hash table]] to associate each vertex in a graph with an [[array data structure|array]] of adjacent vertices. In this representation, a vertex may be represented by any hashable object. There is no explicit representation of edges as objects.<ref>{{cite web | * An implementation suggested by [[Guido van Rossum]] uses a [[hash table]] to associate each vertex in a graph with an [[array data structure|array]] of adjacent vertices. In this representation, a vertex may be represented by any hashable object. There is no explicit representation of edges as objects.<ref>{{cite web |