Recently, Greg Stein said:

I would suggest backing out the marshalling of buffer-interface objects and adding a mechanism for arbitrary type objects to marshal themselves. Without the second part, arrays and Unicode objects aren't marshallable at all (seems bad).

This sounds like the right approach. It would require 2 slots in the tp_ structure and a little extra glue for the typecodes (currently marshall knows all the 1-letter typecodes for all objecttypes it can handle, but types marshalling their own objects would require a centralized registry of object types. For the time being it would probably suffice to have the mapping of type<->letter be hardcoded in marshal.h, but eventually you probably want a more extensible scheme, where Joe R. Extension-Writer could add a marshaller to his objects and know it won't collide with someone else's. -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen@oratrix.com | ++++ if you agree copy these lines to your sig ++++ www.oratrix.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm