I have finished a new Python module which is designed to import SPSS data files as a Python object. It seems to work quite well with the data sets I have. Not all functions are enabled yet: some of the type 7 records are not working yet, but for some I have to reverse engineer the solution and for others I need new data sets that use the subtype records.
When it's a bit more solid, I will probably release it under the AGPL.
llkc - I guess I didn't explain well. My idea isn't an interactive debugger, though there are elements of that in it. The best thing is to produce the code.
In other news, I should (hopefully, all being well!) be doing some consultancy soon. I'm not sure of the size of the job, but it sounds like a good one (ie, interesting and a challenge).