This is a proposal to have a specification how to execute python programs which should output a keyset. This information is used to deliver.
Embedding python should be done with:
[1]
The python backend should output to standard output the keysets and the compiled scripted-backend should parse its output. It shouldn't be so hard it is just split an string in rows (lines) and 2 columns (key/value pairs). And the Config file parsing handled by the python script which should be easier and quicker.