to_graph6_bytes

to_graph6_bytes(G, nodes=None, header=True)

Convert a simple undirected graph to bytes in graph6 format.

Parameters

GGraph (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 ‘>>graph6<<’ bytes to head of data.

Raises

NetworkXNotImplemented

If the graph is directed or is a multigraph.

ValueError

If the graph has at least 2 ** 36 nodes; the graph6 format is only defined for graphs of order less than 2 ** 36.

See also

from_graph6_bytes, read_graph6, write_graph6_bytes

Notes

The returned bytes end with a newline character.

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

References

1

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

Examples

>>> nx.to_graph6_bytes(nx.path_graph(2))
b'>>graph6<<A_\n'