[pypy-dev] Re: fun with functions
tjreedy at udel.edu
Sun Jun 27 07:11:32 CEST 2004
"holger krekel" <hpk at trillke.net> wrote in message
news:20040626110439.GM19360 at solar.trillke...
> Hi Armin,
> [Armin Rigo Fri, Jun 25, 2004 at 05:18:18PM +0100]
> > Moreover, we have a different compatibility problem too: in CPython,
> > functions don't have a __get__, so you can put them in classes and read
> > out without having the first argument bound to the instance. For
> > you put 'operator.add' in the class TrivialObjSpace, then 'space.add'
> > exactly 'operator.add' and not a bound version of it.
> > What should we do about it? Maybe asking python-dev for guidance?
> We could ask who is relying on this behaviour that builtin functions
> get bound on classes. Or maybe just ask who even *knows* it let alone
> on it :-)
>From this user's viewpoint, the fact that CPython's built-in functions do
not quite act the same as functions defined in Python itself (and hence
need a separate type ) is a bit of a optimization glitch. Breaking the
Python function model does occasionally bite people, leading to puzzled
queries on c.l.p (Why doesn't this work (with a builtin) when that did
(with a true func)? ... Because builtins are not the same...). So I see
the possibility of uniform behavior as an advantage.
You might look as what Jython does with its builtins (I have no idea).
Terry J. Reedy
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