networkx.DiGraph.nbunch_iter
networkx.DiGraph.__contains__
Enter search terms or a module, class or function name.
Return True if the graph contains the node n.
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