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Date: Fri, 29 Jul 2011 16:36:47 -0400
Subject: Re: What is xrange?
From: Jerry Hill <malaclypse2@gmail.com>
To: Billy Mays <noway@nohow.com>
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On Fri, Jul 29, 2011 at 3:36 PM, Billy Mays <noway@nohow.com> wrote:
> Is xrange not a generator? =C2=A0I know it doesn't return a tuple or list=
, so
> what exactly is it? =C2=A0Y doesn't ever complete, but x does.
>
> x =3D (i for i in range(10))
> y =3D xrange(10)

xrange() does not return a generator.  It returns an iterable xrange
object.  If you want the iterator derived from the iterable xrange
object, you can get it like this:  iterator =3D y.__iter__()

See http://docs.python.org/library/functions.html#xrange for the
definition of the xrange object.

http://www.learningpython.com/2009/02/23/iterators-iterables-and-generators=
-oh-my/
seems to cover the differences between iterables, iterators, and
generators pretty well.

Some more reading:
http://docs.python.org/howto/functional.html
http://www.python.org/dev/peps/pep-0255/
http://www.python.org/dev/peps/pep-0289/

--=20
Jerry