Warning

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

networkx.readwrite.graph6.to_graph6_bytes

to_graph6_bytes(G, nodes=None, header=True)[source]

Convert a simple undirected graph to bytes in graph6 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 ‘>>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.

Examples

>>> nx.to_graph6_bytes(nx.path_graph(2)) # doctest: +SKIP
b'>>graph6<<A_\n'

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>