[C++-sig] boost::python::object referencing c++ object

[Bjorn Pettersen]

I've got the following code to assign a wrapped object to a Python
variable:

  template <class T>
  void set(const std::string& name, const T& value) {
    PyObject* key = PyString_FromString(name.c_str());
    object val(value);
    PyDict_SetItem(interpreter()->mainmodule(), key, val.ptr());
    Py_DECREF(key);
  }

and I'd like to be able to set() a variable to a c++ object, then later
mutate the object and have the changes visible to Python. I haven't
traced through the code completely, but it looks like the object ctor
makes a copy(?) Is there any way to accomplish what I'd like to do?

-- bjorn