C API from Extension Module in Python | Set 2

#include "pythonsample.h"
/* An extension function that uses the exported API */
static PyObject *print_point(PyObject *self, PyObject *args)
{
    PyObject *obj;
    Point *p;
    if (!PyArg_ParseTuple(args, "O", &obj))
    {
        return NULL;
    }
    /* Note: This is defined in a different module */
    p = PyPoint_AsPoint(obj);
    if (!p)
    {
        return NULL;
    }
    printf("%f %f\n", p->x, p->y);
    return Py_BuildValue("");
}

static PyMethodDef PtExampleMethods[] =
{
    {"print_point", print_point, METH_VARARGS, "output a point"},
    { NULL, NULL, 0, NULL}
};

static struct PyModuleDef ptexamplemodule =
{
    PyModuleDef_HEAD_INIT,
    /* name of module */
    "ptexample", 
    /* Doc string (may be NULL) */
    "A module that imports an API", 
    /* Size of per-interpreter state or -1 */
    -1, 
    /* Method table */
    PtExampleMethods 
    
};

PyMODINIT_FUNC
PyInit_ptexample(void)
{
    PyObject *m;
    
    m = PyModule_Create(&ptexamplemodule);
    
    if (m == NULL)
        return NULL;
    
    /* Import sample, loading its API functions */
    if (!import_sample())
    {
        return NULL;
    }
    
    return m;
}