read_sparse6#

read_sparse6(path)[source]#

Read an undirected graph in sparse6 format from path.

Parameters:

pathfile or string: File or filename to write.

Returns:

GGraph/Multigraph or list of Graphs/MultiGraphs: If the file contains multiple lines then a list of graphs is returned

Raises:

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

See also

read_sparse6, from_sparse6_bytes

References

[1]

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

Examples

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

>>> import tempfile
>>> with tempfile.NamedTemporaryFile(delete=False) 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)]