Currently [1], the implementation and the documentation for PEP 3118's Py_buffer struct don't line up (there's an extra field in the implementation that the PEP doesn't mention). Accordingly, Mark and I think it may be a good idea to leave this structure (and possibly related APIs) out of the stable ABI for the 3.2 release. I don't *think* it needs changing, but I'm not 100% certain until we finish working through the problem and realign the implementation and documentation. Applications and extension modules that use this interface would still work - they would just have to wait until 3.3 before they could consider migrating to the stable ABI. Regards, Nick. [1] http://bugs.python.org/issue10181 -- Nick Coghlan | ncoghlan@gmail.com | Brisbane, Australia