[C++-sig] boost.python: private copy constructor problem

[Mihail Konstantinov]

Hello,
I am still in the early process of learning boost.python.
I have reduced my problem to the following code:

#include <boost/python.hpp>
using namespace boost::python;
class A{
private:
  A(const A&){}; //no public copy constructor
};
class B: public A{
public:
  B(){};
};
BOOST_PYTHON_MODULE(boost_ext)
{
    class_<A>("A",init<>());
    class_<B, bases<A> >("B",init<>());
}

When running bjam on this example, I get
"boost.cpp:6: error: ‘A::A(const A&)’ is private"
as the first error among a long list of hints from the compiler.

How can I expose the classes with their constructors to python?

Thank you
Mihail