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

generate_graph6

generate_graph6(G, nodes=None, header=True)[source]

Generate graph6 format string from a simple 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 ‘>>graph6<<’ string to head of data
Returns:

s : string

String in graph6 format
Raises:

NetworkXError

If the graph is directed or has parallel edges

See also

read_graph6, parse_graph6, write_graph6

Notes

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

References

Graph6 specification: http://cs.anu.edu.au/~bdm/data/formats.txt for details.

Examples

>>> G = nx.Graph([(0, 1)])
>>> nx.generate_graph6(G)
'>>graph6<<A_'