从python字符串中提取的C字符数组

Question

我在 python 中有一个字符串列表，我想把它传给 C 语言扩展进行字符分析。我已经把这个列表分解成了一个个单独的字符串PyObjects。下一步，我希望将这些字符串分割成各自的字符，这样每一个字符串PyObject现在都是一个对应的C型字符数组。但我似乎不知道如何做到这一点。

这是我目前的情况。目前在构建.pyd文件后，它会返回一个1的列表作为Python的填充物(所以其他一切都能正常工作)，我只是不知道如何将一个字符串PyObject分割成C型字符数组。

--- cExt.c ---

#include <Python.h>
#include <stdio.h>

static int *CitemCheck(PyObject *commandString, int commandStringLength) 

    // HAALP

    //char* commandChars = (char*) malloc(commandStringLength*sizeof(char*));

    // char c[] = PyString_AsString("c", commandString);
    // printf("%c" , c);
    // printf("%s", PyString_AsString(commandString));
    // for (int i=0; i<sizeof(commandChars)/sizeof(*commandChars); i++) 
    //     printf("%s", PyString_AsString(commandString));
    //     printf("%c", commandChars[i]);
    // 
    return 1; // TODO: RETURN PROPER RESULTANT


static PyObject *ClistCheck(PyObject *commandList, int commandListLength) 

    PyObject *results = PyList_New(commandListLength);

    for (int index = 0; index < commandListLength; index++) 
        PyObject *commandString;
        commandString = PyList_GetItem(commandList, index);
        int commandStringLength = PyObject_Length(commandString);

        // CitemCheck should take string PyObject and its length as int
        int x = CitemCheck(commandString, commandStringLength);

        PyObject* pyItem = Py_BuildValue("i", x);
        PyList_SetItem(results, index, pyItem);
    
    return results;


static PyObject *parseListCheck(PyObject *self, PyObject *args) 
    PyObject *commandList;
    int commandListLength;

    if (!PyArg_ParseTuple(args, "O", &commandList))
        return NULL;
    

    commandListLength = PyObject_Length(commandList);

    return Py_BuildValue("O", ClistCheck(commandList, commandListLength));


static char listCheckDocs[] = 
    ""; // TODO: ADD DOCSTRING

static PyMethodDef listCheck[] = 
 "listCheck", (PyCFunction) parseListCheck, METH_VARARGS, listCheckDocs,
 NULL,NULL,0,NULL
;

static struct PyModuleDef DCE = 
    PyModuleDef_HEAD_INIT,
    "listCheck",
    NULL,
    -1,
    listCheck
;

PyMODINIT_FUNC PyInit_cExt(void)
    return PyModule_Create(&DCE);

供参考，我的临时扩展构建文件。

--- _c_setup.py --- 
(located in same folder as cExt.c)
"""
to build C files, pass:

python _c_setup.py build_ext --inplace clean --all

in command prompt which is cd'd to the file's dierctory
"""
import glob
from setuptools import setup, Extension, find_packages
from os import path

here = path.abspath(path.dirname(__file__))
files = [path.split(x)[1] for x in glob.glob(path.join(here, '**.c'))]

extensions = [Extension(
    path.splitext(x)[0], [x]
) for x in files]

setup(
    ext_modules = extensions,
)