testing command line arguments double pointer type casting for pybind11

CMakeLists.txt

cmake_minimum_required(VERSION 2.8.12)
project (example)

find_package(pybind11 REQUIRED)
pybind11_add_module(${PROJECT_NAME} example.cpp)

example.cpp

#include <stdio.h>
#include <stdlib.h>

#include <pybind11/pybind11.h>

namespace py = pybind11;

#if PY_VERSION_HEX < 0x03000000
    #define MyPyText_AsString PyString_AsString
#else
    #define MyPyText_AsString PyUnicode_AsUTF8
#endif

void myFunc(int argc, char* argv[]) {
    for (int i = 0; i < argc; ++i) {
        printf("%s\n", argv[i]);
    }
}

// int run(int argc, long* argv_) {
int run(py::object pyargs_) {

    PyObject* pyargs = pyargs_.ptr();
    int argc = (int)PyList_Size(pyargs);
    
    char** argv = (char**)malloc(argc * sizeof(char*));

    for (int i = 0; i < argc; ++i) {
        //argv[i] = (char*)(argv_[i]);
        argv[i] = (char*)MyPyText_AsString(PyList_GetItem(pyargs, (Py_ssize_t)i));
    }

    myFunc(argc, argv);

    free(argv);

    return 0;
}

PYBIND11_MODULE(example, m) {

    m.def("run", &run, "runs the example");
}

example.py

import example
import sys
# from typing import List, Tuple

# def tmpConvert(strList: List[str]) -> Tuple[int, List[int]]:
#     return len(strList), [id(item) for item in strList]


# print(example.run(tmpConvert(sys.argv)))

print(example.run(sys.argv))