LinuxQuestions.org - Extending Python with C (reference counting questions)

Hi there,

I have been using Python for a while and recently have started to extend with C modules. I am a little confused about reference counting though. Suppose we have the following:

Code:

static PyObject *SomeFunction(PyObject *self, PyObject *args){

          

          PyObject *storage_for_python_list;



        if(!PyArg_ParseTuple(args, "O", &storage_for_python_list))

            return NULL;



        ...do something with list

        

        Py_INCREF(Py_None);

          return Py_None;

do we need to Py_DECREF(storage_for_python_list)??

Second, is doing the following a bad idea?

Code:

Py_Object *list;

list= PyList_New(n);

PyList_SetItem(list, index, PyFloat_FromDouble(some_double_value));

I'm not sure what happens to the reference created from PyFloat_FromDouble in this case.

Thanks in advance for any suggestions/feedback.