Right now it's use is only academic, however potential applications would be to make testing PL/SQL easier by providing a simple way to call them from an easy to use language
What you need is just the client.py file, the cx_Oracle package (refer to it's documentation on how to install it) and an Oracle database you can point this script to.
Hopefully if all goes well you will be able to call most of the PL/SQL code from Python
>>>plsql = Database(...)
>>>plsql.simple_function(p_int=5)
10Refer to tests for what is being supported right now, it is not a lot, but enough for a proof of concept (Creating an easy way to call PL/SQL from Python)