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__logicsample/samplederivedclass.c

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+#include <vector>
+#include <boost/python.hpp>
+#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
+
+struct base
+{
+  virtual ~base() {}
+  virtual int perform() = 0;
+};
+
+struct base_wrap: base, boost::python::wrapper<base>
+{
+  int perform() { return int(this->get_override("perform")()) - 10; }
+};
+
+BOOST_PYTHON_MODULE(example)
+{
+  namespace python = boost::python;
+  python::class_<base_wrap, boost::noncopyable>("Base", python::init<>())
+    .def("perform", python::pure_virtual(&base::perform))
+    ;
+
+  python::class_<std::vector<base*>>("BaseList")
+    .def(python::vector_indexing_suite<std::vector<base*>>())
+    ;
+
+  python::def("do_perform", +[](base* object) {
+    return object->perform();
+  });
+}
+
+
+
+>>> import example
+>>> class derived(example.Base):
+...     def __init__(self):
+...         self.name = "test"
+...         example.Base.__init__(self)
+...     def perform(self):
+...         return 42
+...       
+>>> d = derived()
+>>> base_list = example.BaseList()
+>>> base_list.append(d)
+>>> assert(len(base_list) == 1)
+>>> assert(base_list[0].perform() == 42)
+>>> assert(example.do_perform(base_list[0]) == 32)