networkx.node_attribute_xy¶

networkx.node_attribute_xy(G, attribute, nodes=None)[source]¶

Return iterator of node-attribute pairs for all edges in G.

Parameters:	G: NetworkX graph attribute: key The node attribute key. nodes: list or iterable (optional) Use only edges that are adjacency to specified nodes. The default is all nodes.
Returns:	(x,y): 2-tuple Generates 2-tuple of (attribute,attribute) values.

Notes

For undirected graphs each edge is produced twice, once for each edge representation (u,v) and (v,u), with the exception of self-loop edges which only appear once.

Examples

>>> G = nx.DiGraph()
>>> G.add_node(1,color='red')
>>> G.add_node(2,color='blue')
>>> G.add_edge(1,2)
>>> list(nx.node_attribute_xy(G,'color'))
[('red', 'blue')]