Hi, just a quick question about what you can and cannot do with lxml's schema support. In openpyxl we're moving towards a 1:1 implementation of the underlying schema. lxml.objectify isn't directly an option for two reasons: lxml is an optional dependency and there are cases where we'd definitely run out of memory. Instead we're using descriptors to enforce type definitions. This means a little more code but now that it seems to be working well I was thinking whether we could automate some of the process. I've looked at some of the existing XSD to Python generators but the generated code is far from what I'd like to have. Can we use the lxml schema support for anything other than validation? ie. can I query a schema object for a particular definition? Or is the best approach to parse the XSD files directly and work through the definitions with a mapping? Charlie -- Charlie Clark Managing Director Clark Consulting & Research German Office Kronenstr. 27a Düsseldorf D- 40217 Tel: +49-211-600-3657 Mobile: +49-178-782-6226