On May 09, 2012, at 11:09 AM, Brett Cannon wrote: >Sure, but couldn't we define this "empty" class in C code so that you can >use the C API with it as well and just provide a C function to get a new >instance? +1 ISTM to be a companion to collections.namedtuple. IWBNI this new type was also exposed in the collections module. -Barry