XML : Importing PMML 3.2 model to Debug in Python and convert to 4.2

I have a PMML model written in PMML 3.2 and I need to debug the code to run it properly.

I have looked at partykit in R, but I would like to understand if I can import an XML PMML file into Python and check it is formatted correctly for PMML 4.2?

I did not create the original model , but need to debug the syntax correctly and would like to do it in a open source tool.

Package like Augustus etc. seem to be able to generate PMML easily, but I need to import this model to check its syntax and then convert it / upgrade it to 4.2

Import an SVM model in PMML to Java or Python? thread is a good start, but it only focuses on Java and adapa