any() and all() Was: Pre-PEP: Dictionary accumulator methods

[Raymond Hettinger]

> > Py2.5 is already going to include any() and all() as builtins.  The
> > signature  does not include a function, identity or otherwise.
> > Instead, the caller can
> > write a listcomp or genexp that evaluates to True or False:
> >
> >     any(x >= 42 for x in data)

[Roose]
> Oh great, I just saw that.
 . . .
> But I wish it could be included in Python 2.4.x.

If it is any consolation, the any() can already be expressed somewhat cleanly
and efficiently in Py2.4 with genexps:

  True in (x >= 42 for x in data)

The translation for all() is a little less elegant:

  False not in (x >= 42 for x in data)


Raymond Hettinger