Finding way around ABCs (was What for -- for? (was A bug?))

Rustom Mody rustompmody at gmail.com
Thu Oct 30 18:16:50 CET 2014


On Thursday, October 30, 2014 10:40:42 PM UTC+5:30, Ian wrote:
> On Thu, Oct 30, 2014 at 11:01 AM, Rustom Mody wrote:
> > On Wednesday, October 29, 2014 11:49:27 AM UTC+5:30, Zachary Ware wrote:
> >> On Wed, Oct 29, 2014 at 1:11 AM, Rustom Mody wrote:
> >> > On Wednesday, October 29, 2014 11:10:06 AM UTC+5:30, Zachary Ware wrote:
> >> >> Of course, that's 3 (progressively shorter) loops to get the names of
> >> >> the ABCs of a class compared to 1 (fairly short in the first place)
> >> >> loop for a map of relationships to all available ABCs, but optimizing
> >> >> such a toy as this would just be an exercise in futility :)
> >> >
> >> > Not so.
> >> >
> >> > The charm of introspection is that the introspection
> >> > itself can be introspected.
> >> > For that to be convincing there needs to be a good combo
> >> > of clarity and succinctness.  In particular why not reduce
> >> > the two functions to one?
> >> >
> >> > def get_abc_names(cls):
> >> >     return [abc.__name__ for abc in abcs if issubclass(cls,abc)]
> >>
> >> Well, it depends on what you actually want, the spec has been a bit fuzzy ;)
> >
> > Thanks for this much -- its helpful.
> > Regarding ABCs -- is there a central documentation for them:
> >
> > "What exactly is a sequence or iterable or etc protocol?"
> >
> > This information seems to be strewn all over the place but systematically.
> 
> Maybe the glossary?
> 
> https://docs.python.org/3/glossary.html

Ummm...

I was looking for something more reference-ish, ie
More prolix for ABCs
And not containing random bits of unconnected data like
- What is CPython
- What is EAFP

Maybe there's something in the bowels of the C(Python)-code?



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