networkx.readwrite.sparse6.read_sparse6

read_sparse6(path)[source]

Read an undirected graph in sparse6 format from path.

Parameters

path (file or string) – File or filename to write.

Returns

G – If the file contains multiple lines then a list of graphs is returned

Return type

Graph/Multigraph or list of Graphs/MultiGraphs

Raises

NetworkXError – If the string is unable to be parsed in sparse6 format

Examples

You can read a sparse6 file by giving the path to the file:

>>> import tempfile
>>> with tempfile.NamedTemporaryFile() as f:
...     _ = f.write(b'>>sparse6<<:An\n')
...     _ = f.seek(0)
...     G = nx.read_sparse6(f.name)
>>> list(G.edges())
[(0, 1)]

You can also read a sparse6 file by giving an open file-like object:

>>> import tempfile
>>> with tempfile.NamedTemporaryFile() as f:
...     _ = f.write(b'>>sparse6<<:An\n')
...     _ = f.seek(0)
...     G = nx.read_sparse6(f)
>>> list(G.edges())
[(0, 1)]

References

1

Sparse6 specification <http://users.cecs.anu.edu.au/~bdm/data/formats.html>