A simple package allowing to use WebGraph data in Python (using the Jython interpreter).

The code in this project is based on

• WebGraph 3.6.5
• Python 2.7.16
• Jython 2.7.2
• Ubigraph 0.2.4alpha no more available

and has been tested on Mac OS X 10.13.6.

For details, please refer to the documentation.

To install the required jars run ./install_jars.sh (it basically downloads the binary tarball and dependencies tarball tarballs from the WebGraph site and unpacks all the jars in the jars directory); observe that the script refers to version 3.6.5 of WebGraph, in case of version changes just update the relevant line of the script.

Then create an example.graph-txt file containing a test graph (as per ASCIIGraph format), for instance

3
0 1 2
2
0

Now, running Jython as jython -J-cp 'jars/*' should work as follows

Jython 2.7.2 (v2.7.2:925a3cc3b49d, Mar 21 2020, 10:03:58)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java11.0.5
Type "help", "copyright", "credits" or "license" for more information.
>>> from it.unimi.dsi.webgraph import ASCIIGraph
>>> ASCIIGraph.load('example')
Nodes: 3
Arcs: 5
Successors of 0 (degree 3): 0 1 2
Successors of 1 (degree 1): 2
Successors of 2 (degree 1): 0

Note the -J-cp 'jars/*' that sets the classpath to the directory where the jars have been unpacked.