networkx.algorithms.isolate.number_of_isolates¶
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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