networkx.readwrite.sparse6.to_sparse6_bytes

to_sparse6_bytes(G, nodes=None, header=True)[source]

Convert an undirected graph to bytes in sparse6 format.

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<<’ bytes to head of data.

Raises

  • NetworkXNotImplemented – If the graph is directed.

  • ValueError – If the graph has at least 2 ** 36 nodes; the sparse6 format is only defined for graphs of order less than 2 ** 36.

Examples

>>> nx.to_sparse6_bytes(nx.path_graph(2))
b'>>sparse6<<:An\n'

See also

to_sparse6_bytes(), read_sparse6(), write_sparse6_bytes()

Notes

The returned bytes end with a newline character.

The format does not support edge or node labels.

References

1

Graph6 specification <http://users.cecs.anu.edu.au/~bdm/data/formats.html>