Sublassing in C

[Dennis Kaarsemaker]

I'm trying to create a subclass of Exception in C, but cant figure out
what to use as tp_base in the PyTypeObject struct. Can anybody give me
directions on where to look or maybe even an answer?
--
Dennis K.
And that's the way the cookie crumbles.

[David M. Cooke]

At some point, Dennis Kaarsemaker <sp******@kaarsemaker.net> wrote:

I'm trying to create a subclass of Exception in C, but cant figure out
what to use as tp_base in the PyTypeObject struct. Can anybody give me
directions on where to look or maybe even an answer?

Have a look at Python/exceptions.c in the Python source; that's where
all the subclasses of Exception (IndexError, etc.) are created.

--
|>|\/|<
/--------------------------------------------------------------------------\
|David M. Cooke
|cookedm(at)physics(dot)mcmaster(dot)ca

[Greg Chapman]

On Sat, 14 Aug 2004 15:31:26 +0200, Dennis Kaarsemaker
<sp******@kaarsemaker.net> wrote:

I'm trying to create a subclass of Exception in C, but cant figure out
what to use as tp_base in the PyTypeObject struct. Can anybody give me
directions on where to look or maybe even an answer?

Currently, exceptions have to be old-style classes, so you cannot create a
subclass using the new type-based subclassing. Instead, you should use
PyErr_NewException, which creates a new Exception subclass with the given name,
base and attributes (despite the first sentence of the documentation, it returns
a new subclass, not a new exception object).

---
Greg Chapman