Python ctypes: Python file object <-> C FILE *

Question

I am using ctypes to wrap a C-library (which I have control over) with Python. I want to wrap a C-function with declaration:

int fread_int( FILE * stream );
         


        

Answer 1

Tried this:

#if PY_MAJOR_VERSION >= 3
    if (PyObject_HasAttrString(pyfile, "fileno")) {
        int fd = (int)PyLong_AsLong(PyObject_CallMethod(pyfile, "fileno", NULL));
        if (PyObject_HasAttrString(pyfile, "mode")) {
            char *mode = PyUnicode_AsUTF8AndSize(
                    PyObject_CallMethod(pyfile, "mode", NULL), NULL);
            fp = fdopen(fd, mode);
        }
        else {
            return PyErr_Format(PyExc_ValueError,
                    "File doesn’t have mode attribute!");
        }
    }
    else {
        return PyErr_Format(PyExc_ValueError,
                "File doesn’t have fileno method!");
    }
#else
    fp = PyFile_AsFile(pyfile);
#endif

It looks like it might be working.