write_graph6¶

write_graph6(G, path, nodes=None, header=True)[source]¶

Write a simple undirected graph to path in graph6 format.

Parameters:	G (Graph (undirected)) – path (file or string) – File or filename to write. nodes (list or iterable) – Nodes are labeled 0...n-1 in the order provided. If None the ordering given by G.nodes() is used. header (bool) – If True add ‘>>graph6<<’ string to head of data
Raises:	NetworkXError – If the graph is directed or has parallel edges

Examples

>>> G = nx.Graph([(0, 1)])
>>> nx.write_graph6(G, 'test.g6')

See also

generate_graph6(), parse_graph6(), read_graph6()

Notes

The format does not support edge or node labels, parallel edges or self loops. If self loops are present they are silently ignored.

References

Graph6 specification: http://cs.anu.edu.au/~bdm/data/formats.txt for details.