Call Python shared object (.so) from C++

[yeap0022]

I want to expose C++ to a Python library saved in .so file.

I have this file called sum.py:

import numpy as np

def add(array):
     return(np.sum(array))

Now, I encrypt this script into a .so file, called libsum.so.

I want to call libsum.so in my C++ script that looks something like this:

#include <iostream>
#include <vector>
#include <pybind11/embed.h>
#include <pybind11/stl.h>

namespace py = pybind11;

int main():
{
     py::scoped_interpreter guard{};
     auto exampleModule = py::module::import("sum"); // call libsum.so
     auto func = exampleModule.attr("add");

     int num = func(std::vector<double>{1, 2, 3, 4, 5});
     std::cout << "The sum is " << num << std::endl;

     return 0;
}

What should be the right way to write the C++ script?
Appreciate your response.