[issue43917] An error in classmethod example in the documentation of descriptor

[Raymond Hettinger]

Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:

It looks like it should be:

    if hasattr(type(self.f), "__get__"):


Here's the relevant C code:

static PyObject *
cm_descr_get(PyObject *self, PyObject *obj, PyObject *type)
{
    classmethod *cm = (classmethod *)self;

    if (cm->cm_callable == NULL) {
        PyErr_SetString(PyExc_RuntimeError,
                        "uninitialized classmethod object");
        return NULL;
    }
    if (type == NULL)
        type = (PyObject *)(Py_TYPE(obj));
    if (Py_TYPE(cm->cm_callable)->tp_descr_get != NULL) {
        return Py_TYPE(cm->cm_callable)->tp_descr_get(cm->cm_callable, type,
                                                      NULL);
    }
    return PyMethod_New(cm->cm_callable, type);
}

----------

_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue43917>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com