networkx.DiGraph.has_node

DiGraph.has_node(n)

Returns True if the graph contains the node n.

Identical to n in G

Parameters:n (node)

Examples

>>> G = nx.path_graph(3)  # or DiGraph, MultiGraph, MultiDiGraph, etc
>>> G.has_node(0)
True

It is more readable and simpler to use

>>> 0 in G
True