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has_node

MultiGraph.has_node(n)

Return True if the graph contains the node n.

Parameters :n : node

Examples

>>> G = nx.Graph()   # or DiGraph, MultiGraph, MultiDiGraph, etc
>>> G.add_path([0,1,2])
>>> G.has_node(0)
True

It is more readable and simpler to use

>>> 0 in G
True