easygraph.readwrite.pajek module#

Read graphs in Pajek format.

This implementation handles directed and undirected graphs including those with self loops and parallel edges.

Format#

See http://vlado.fmf.uni-lj.si/pub/networks/pajek/doc/draweps.htm for format information.

easygraph.readwrite.pajek.generate_pajek(G)[source]#

Generate lines in Pajek graph format.

Parameters:: G (graph) – A EasyGraph graph

References

See http://vlado.fmf.uni-lj.si/pub/networks/pajek/doc/draweps.htm for format information.

easygraph.readwrite.pajek.parse_pajek(lines)[source]#

Parse Pajek format graph from string or iterable.

Parameters:: lines (string or iterable) – Data in Pajek format.
Returns:: G
Return type:: EasyGraph graph

See also

read_pajek

easygraph.readwrite.pajek.read_pajek(path)[source]#

Read graph in Pajek format from path.

Parameters:: path (file or string) – File or filename to write. Filenames ending in .gz or .bz2 will be uncompressed.
Returns:: G
Return type:: EasyGraph MultiGraph or MultiDiGraph.

Examples

>>> G = eg.path_graph(4)
>>> eg.write_pajek(G, "test.net")
>>> G = eg.read_pajek("test.net")

To create a Graph instead of a MultiGraph use

>>> G1 = eg.Graph(G)

References

See http://vlado.fmf.uni-lj.si/pub/networks/pajek/doc/draweps.htm for format information.

easygraph.readwrite.pajek.write_pajek(G, path, encoding='UTF-8')[source]#

Write graph in Pajek format to path.

Parameters:

G (graph) – A EasyGraph graph
path (file or string) – File or filename to write. Filenames ending in .gz or .bz2 will be compressed.

Examples

>>> G = eg.path_graph(4)
>>> eg.write_pajek(G, "test.net")

Warning

Optional node attributes and edge attributes must be non-empty strings. Otherwise it will not be written into the file. You will need to convert those attributes to strings if you want to keep them.

References

See http://vlado.fmf.uni-lj.si/pub/networks/pajek/doc/draweps.htm for format information.