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This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.

write_sparse6

write_sparse6(G, path, nodes=None, header=True)[source]

Write graph G to given path in sparse6 format. :param G: :type G: Graph (undirected) :param path: File or filename to write

Parameters:
  • 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
Raises:

NetworkXError – If the graph is directed

Examples

>>> G = nx.Graph([(0, 1), (0, 1), (0, 1)])
>>> nx.write_sparse6(G, 'test.s6')

See also

read_sparse6(), parse_sparse6(), generate_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.