olivas@olivas-desktop:~/sandbox/boost/python_and_ref_ptr/build$ ../src/test.py 
 ( C++ ) Hi my name is VisitorBase
 ( C++ ) Hi my name is HelperVisitor
 ( C++ ) Hi my name is DerivedVisitor
 ( C++ ) Hi my name is HelperVisitor
olivas@olivas-desktop:~/sandbox/boost/python_and_ref_ptr/build$ ../src/test.py 
 ( python ) Hi my name is VisitorBase
 ( python ) Hi my name is VisitorBase
 ( python ) Hi my name is VisitorBase
 ( python ) Hi my name is VisitorBase
olivas@olivas-desktop:~/sandbox/boost/python_and_ref_ptr/build$