尝试使用boost::python向python公开一个简单的C++多态性时，我开始感到非常沮丧。我在C++中确实有以下结构:structBase{inttypeID;};structDerived:publicBase{intderivedProperty;}//andsomemorefrombasederivedtypes....Base*returnSomethingDerivedFromBase(...){Derived*ret=newDerived;ret->derivedProperty=1234;returnret;}BOOST_PYTHON_MODULE(foo){cl