python / lua的Swig绑定不会正确初始化成员数据

I'm trying to build a set of Lua bindings for a collection of C++ classes, but have been toying with Python to see if I get better results. In either language the bindings seem to work, however, when I initialize an instance of a class that contains members of other classes, those data members do not seem to be guaranteed to be initialized.I'm trying to build a set of Lua bindings for a