Google Protocol Buffers. I want to use those for exporting scene information from Blender. Blender uses Python 3 for scripting and the protobuf code generator

Google Protocol Buffers. I want to use those for exporting scene information from Blender. Blender uses Python 3 for scripting and the protobuf code generator and libraries only support Python 2.x. The same for Apache Thrift. Both are very well maintained, they are just not planning to move to Py3 any time soon.