void foo(void* data)
{
    py::object* obj(reinterpret_cast<py::object*>(data));
    py::print(obj->attr("name"));
}

void bar()
{
    py::object mod(py::module::import("os"));
    void* data = reinterpret_cast<void*>(&mod);
    foo(data);
}

void bar2()
{
    // Note: Not using a smart pointer here means you will have to be extra careful
    // to avoid memory leaks.
    std::unique_ptr<py::object> mod(std::make_unique<py::object>());
    *mod = py::module::import("os");
    void* data = reinterpret_cast<void*>(mod->ptr());
    foo(data);
}


int main()
{
    py::scoped_interpreter guard{};

    try {

        bar();
        bar2();


    } catch (py::error_already_set& e) {
        std::cerr << e.what() << "\n";
    }

    return 0;
}