I have some issue with exposing abstract class to python using Boost.Python lib. I am using 1_53_0 boost and Python 33.
There is a similar thread related to this issue. ( How can I implement a C++ class in Python, to be called by C++? ) I was following eudoxos response where he makes a wrapper around abstract class Base, which has a method returning string type.
I'm doing something similar but I constantly get a compilation error:
The above errors are related to the line:
return this->get_override("getName")();
From my example shown bellow:
#include <string>
#include "boost/python.hpp"
class Person {
public:
virtual std::string getName() { return "Base"; };
virtual void setName(std::string name) {};
};
class PersonWrap : public Person, public boost::python::wrapper<Person>
{
public:
std::string getName()
{
return this->get_override("getName")();
}
void setName(std::string name)
{
this->get_override("setName")();
}
};
class Student : public Person {
public:
std::string getName() { return myName; };
void setName(std::string name) { myName = name; };
std::string myName;
};
BOOST_PYTHON_MODULE(example)
{
boost::python::class_<PersonWrap, boost::noncopyable>("Person")
.def("getName", (&Person::getName))
.def("setName", (&Person::setName))
;
boost::python::class_<Student, boost::python::bases<Person>>("Student")
.def("getName", (&Student::getName))
.def("setName", (&Student::setName))
;
}
Any comments are appreciated, thanks in advance!
I have found the solution to this issue and it works like this:
std::string getName()
{
//return this->get_override("getName")();
return boost::python::call<std::string>(this->get_override("getName")());
}
However, according to the boost python documentation this has to be used only for MSVC6/7, which is not my case since I am using VS2010 (MSVC 10.0).
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