C语言调用Python模块中的Python函数

#include "Python.h"
int main()
{
        Py_Initialize();
        PyObject *pmodule = PyImport_ImportModule("os");
        //获取当前用户的id
        PyObject *pfunc = PyObject_GetAttrString(pmodule, "geteuid");
        PyObject *arg = Py_BuildValue("()");
        PyObject *result = PyObject_Call(pfunc, arg, NULL);
        long retval = PyLong_AsLong(result);
        printf("result: %ld\n", retval);
        Py_XDECREF(result);
        Py_FinalizeEx();
        return 0;
}

gcc -c -I/usr/include/python3.10  -L/usr/lib/python3.10/config-3.10-x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -lpython3.10 -lcrypt -ldl  -lm -lm  test.c
gcc -o test test.o  -L/usr/lib/python3.10/config-3.10-x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -lpython3.10 -lcrypt -ldl  -lm

执行后返回如下：

$ ./test
result: 1001
这种方法可以调用普通Python函数