networkx.readwrite.graph6.write_graph6¶
-
write_graph6
(G, path, nodes=None, header=True)[source]¶ Write a simple undirected graph to a path in graph6 format.
Parameters: - G (Graph (undirected))
- path (str) – The path naming the file to which to write the graph.
- 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
Raises: NetworkXNotImplemented
– If the graph is directed or is a multigraph.ValueError
– If the graph has at least2 ** 36
nodes; the graph6 format is only defined for graphs of order less than2 ** 36
.
Examples
You can write a graph6 file by giving the path to a file:
>>> import tempfile >>> with tempfile.NamedTemporaryFile() as f: ... nx.write_graph6(nx.path_graph(2), f.name) ... _ = f.seek(0) ... print(f.read()) b'>>graph6<<A_\n'
See also
Notes
The function writes a newline character after writing the encoding of the graph.
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>