[C++-sig] set python attribute from C++

[Gennadiy Rozental]

Gennadiy Rozental <rogeeff <at> gmail.com> writes:

Forgot to mention two critical bits of info

> class PythonBase : public Base {
> public:
       // release python object
       ~PythonBase() { bp::decref( m_object ) }
...

> Base*
> PythonFactory::create(...) 
> {
>    bp::object obj = m_py_type();
>    PythonBase* ptr = bp::extract<PythonBase*>( obj );
> 
>    ptr->init( obj );

     // make sure python object is not destroyed once we leave this scope
     bp::incref( obj );

>    return ptr;
> }

Gennadiy