new.instancemethod
Michael Hudson
mwh at python.net
Sun May 13 07:40:36 EDT 2001
"Alex Martelli" <aleaxit at yahoo.com> writes:
> "Michael Hudson" <mwh at python.net> wrote in message
> news:m3d79eraqw.fsf at atrus.jesus.cam.ac.uk...
> > James_Althoff at i2.com writes:
> >
> > > Does anyone know what the "class" argument -- arg 3 -- to
> > > new.instancemethod is for?
> >
> > It doesn't seem to serve any "real" purpose other than documentation.
>
> *blink*... come again...?
[snip]
> >>> fb(a)
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> TypeError: unbound method must be called with class instance 1st argument
Oops! Blame an inaccurate grep for missing that.
> That doesn't seem a case of "no real purpose other than
> documentation" to me... when I use new.instancemethod to generate an
> unbound method, I _do_ have to tell it what class it is a method of,
> and far from being just a tidbit for documentation it will be
> checked at runtime, raising TypeError if used inappropriately.
This check has sometimes struck me as unpythonically draconian. Would
bad things happen if it was just removed? Maybe, but I can't think of
any right now.
Cheers,
M.
--
Well, yes. I don't think I'd put something like "penchant for anal
play" and "able to wield a buttplug" in a CV unless it was relevant
to the gig being applied for...
-- Matt McLeod, alt.sysadmin.recovery
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