networkx.algorithms.isolate.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
G (NetworkX graph)
- Returns
The number of degree zero nodes in the graph
G
.- Return type