[Python-3000] Binding builtin function to class

[Haoyu Bai]

Richard Boulton wrote:
> Yes, this is what Haoyu was talking about - I suspect he meant "doesn't 
> work" rather than "cannot work", and that's the reason it doesn't work 
> (both in 2.x and 3.0).

Thanks Richard for helping me to explain.

> I'll ask a direct question: what is the recommended replacement for 
> new.instancemethod?  In particular, what would be the recommended 
> replacement for the following code snippet?
> 
> class TestBase(object):
>     """Proxy of C++ TestBase class"""
>     #some unrelated code omitted
>     pass
> #_test.TestBase_test is the C function in _test DLL module
> TestBase.test = new.instancemethod(_test.TestBase_test,None,TestBase)
> 
> 
> A secondary question is whether new.instancemethod was ever the right 
> way for SWIG to be working: the person who originally wrote the python 
> backend for SWIG isn't around any more, as far as I know, so we don't 
> have knowledge of the reason that the code was written this way.
> 

Yes, these are the very problems I encountered. I think the using of 
"new.instancemethod" is for speed, because in SWIG's command line, the 
"-fastproxy" option enabled it:

-fastproxy      - Use fast proxy mechanism for member methods

So what we expect is to find a way doing this in Python 3, as fast as 
the "new.instancemethod".


Best regards,

Haoyu Bai
4/28/2008