I found the line of code that makes this error occur. It is when trying to push my object into the container. ¿Anyone knows why? 2009/5/1 Germán Diago :

I have a question about managing python objects.

I have a base class implemented in c++, which I use in python.

From python I inherit that class. And the I try to use the python instance from c++, like this.

//This class has a function which is registered in python. I want to //be able to register python instances with this class class AnotherClass {   void registerobject(const std::string & name, MyBaseClass * a)   {      v.push_back(a);   } };

//Interface class, which I inherit in python class MyBaseClass {   virtual const std::string getData(Object * o) const = 0; };

From python:

class MyPyClass(MyBaseClass):    def __init__(self):         MyBaseClass.__init__(self)

   def getData(self, o):        return "hello"

My question is. In order to register  that class, namely, MyPyClass(which is a python class):

can I do it through registerobject?

Or should I implement something like this?:

class AnotherClass {

  void registerobject(const std::string & name, python::object & o)  {       MyBaseClass * m = extract<MyBaseClass>(o);       v.push_back(m);   }

};

In all two cases I get error_already_set exception when I try to execute the registerobject function and don't know why.