[Boost-users] Boost.Python produces TypeError on OS X

From: Marco Biasini (mbiasini_at_[hidden])
Date: 2008-06-27 05:21:45

Hi!

I've got a problem when using boost.python on MacOS X. The program  
exits with

TypeError: attribute name must be string

   This happens both in boost 1.34 and 1.35. I was however able to  
run attached snippet without problems with boost 1.33.

Code:

#include <boost/python.hpp>

using namespace boost::python;

class CppClass {
public:
   int getNum() {
     return 7;
   }
};

int main( int argc, char ** argv ) {
   try {
     Py_Initialize();

     object main_module((
       handle<>(borrowed(PyImport_AddModule("__main__")))));

     object main_namespace = main_module.attr("__dict__");
        main_namespace["CppClass"] = class_<CppClass>("CppClass")
                                       .def("getNum",&CppClass::getNum);
        handle<> ignored(( PyRun_String( "cpp = CppClass();print cpp.getNum() 
\n",
                                      Py_file_input,
                                      main_namespace.ptr(),
                                      main_namespace.ptr() ) ));
   } catch( error_already_set ) {
     PyErr_Print();
   }
}

Specs, if it should matter:

   * MacOS 10.4.11, 2.14 GhZ Core 2 Duo
   * Compiler gcc 4.0.1 (Apple, Inc.), Python 2.4 (MacPorts)

Any suggestions/directions? Please let me know if you need additional  
information.

Best,
Marco