Returns a caveman graph of
lcliques of size
- l (int) – Number of cliques
- k (int) – Size of cliques
G – caveman graph
This returns an undirected graph, it can be converted to a directed graph using
nx.to_directed(), or a multigraph using
nx.MultiGraph(nx.caveman_graph(l, k)). Only the undirected version is described in  and it is unclear which of the directed generalizations is most useful.
>>> G = nx.caveman_graph(3, 3)
 Watts, D. J. ‘Networks, Dynamics, and the Small-World Phenomenon.’ Amer. J. Soc. 105, 493-527, 1999.