number_of_isolates¶
- number_of_isolates(G)[source]¶
Returns the number of isolates in the graph.
An isolate is a node with no neighbors (that is, with degree zero). For directed graphs, this means no in-neighbors and no out-neighbors.
- Parameters:
- GNetworkX graph
- Returns:
- int
The number of degree zero nodes in the graph
G
.