generate_sparse6¶

generate_sparse6(G, nodes=None, header=True)[source]¶

Generate sparse6 format string from an undirected graph.

Parameters:	G (Graph (undirected)) – 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 ‘>>sparse6<<’ string to head of data
Returns:	s – String in sparse6 format
Return type:	string
Raises:	NetworkXError – If the graph is directed

Examples

>>> G = nx.MultiGraph([(0, 1), (0, 1), (0, 1)])
>>> nx.generate_sparse6(G)
'>>sparse6<<:A_'

See also

read_sparse6(), parse_sparse6(), write_sparse6()

Notes

The format does not support edge or node labels.

References

Sparse6 specification: http://cs.anu.edu.au/~bdm/data/formats.txt for details.