[Python-Dev] Small any/all enhancement

Tue Dec 27 22:50:37 CET 2005

On Dec 27, 2005, at 12:45 PM, Valentino Volonghi aka Dialtone wrote:
 ...
> any(iterable, test=bool) and all(iterable, test=bool)
 ...
> any(some_objects, test=operator.attrgetter('some_attribute'))

Why would that be better than
any(o.some_attribute for o in some_objects)
?
> def zerop(x):
> return x==0
>> all(some_objects, zerop)

and why would that be better than
all(o==0 for o in some_objects)
?
> instead of preprocessing the generator with a generator expression 
> before
> passing it to any/all.

I guess I just don't see the advantage, along any plane, since the 
genexp fits so snugly right there inside the any/all's parentheses. 
What am I missing?
Alex