Hello,
I'm trying to develop an extension module in C, but am having some
difficulties. I thought about posting to the general python mailling
list, but since it has to do with the C API I figured this was the correct
location.
My difficulty lies with subclassing a class provided by another external
module. I have access to the structure definition, so I can determine the
size fo the tp_basicsize member of the PyTypeObject structure. What I
can't seem to determine is value for the tp_base element.
This is my current "best guess".
PyObject* superclass;
superclass = PyObject_GetAttrString( module, "SuperClass" );
if ( !superclass ) return;
type.tp_base = superclass->ob_type;
Py_DECREF( superclass );
type.tp_new = PyType_GenericNew;
if ( PyType_Ready( &type ) < 0 ) return;
Unfortunately, I seem to be inheriting from the type object for
SuperClass, and not from SuperClass itself.
I would greatly appreciate some direction on this issue.
Thank-you,
----------------------------------------
Robert Johnstone
Simon Fraser University
http://www.sfu.ca/~rjohnsto/
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