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Groups > comp.lang.python > #106601
| From | Marko Rauhamaa <marko@pacujo.net> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Promoting Python |
| Date | 2016-04-06 23:05 +0300 |
| Organization | A noiseless patient Spider |
| Message-ID | <87inzujye9.fsf@elektro.pacujo.net> (permalink) |
| References | (4 earlier) <CAGgTfkPkgKnugcnRaY1PgCuJfUsKv5Ef__rbhTM_oNpK+HTAfQ@mail.gmail.com> <mailman.133.1459949616.32530.python-list@python.org> <87zit6lt8q.fsf@elektro.pacujo.net> <ne3pe4$s67$1@ger.gmane.org> <mailman.37.1459972365.1197.python-list@python.org> |
Terry Reedy <tjreedy@udel.edu>:
> On 4/6/2016 10:14 AM, Marko Rauhamaa wrote:
>
>> Seriously, Python wouldn't be, couldn't be Turing-complete without
>> "while" (mainly because it doesn't support tail-recursion
>> elimination).
>>
>> Now, if Python had an unlimited range() iterator/iterable, you could
>> use a "for" statement to emulate "while".
>
> For practical purposes, this equals 'while True: pass'
>
> for i in itertools.count: pass
>
> This is equivalent, regardless of memory.
>
> class whiletrue:
> def __iter__(self): return self
> def __next__(self): return None
>
> for none in whiletrue(): pass
By George, she's got it!
i = 0
for _ in itertools.count():
if i >= 10:
break
print(i)
i += 1
That is, assuming "break" is allowed.
Marko
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Promoting Python "Gordon( Hotmail )" <sionet3344@hotmail.co.uk> - 2016-04-05 06:48 +0100
Re: Promoting Python Rustom Mody <rustompmody@gmail.com> - 2016-04-05 00:31 -0700
Re: Promoting Python Joel Goldstick <joel.goldstick@gmail.com> - 2016-04-05 08:06 -0400
Re: Promoting Python alister <alister.ware@ntlworld.com> - 2016-04-05 18:02 +0000
Re: Promoting Python BartC <bc@freeuk.com> - 2016-04-05 19:47 +0100
Re: Promoting Python alister <alister.ware@ntlworld.com> - 2016-04-05 19:38 +0000
Re: Promoting Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-04-05 08:13 -0400
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-05 15:31 +0300
Re: Promoting Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-04-06 20:52 +1200
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 12:12 +0300
Re: Promoting Python BartC <bc@freeuk.com> - 2016-04-06 12:06 +0100
Re: Promoting Python Ned Batchelder <ned@nedbatchelder.com> - 2016-04-06 04:38 -0700
Re: Promoting Python BartC <bc@freeuk.com> - 2016-04-06 14:21 +0100
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 14:46 +0300
Re: Promoting Python Michael Selik <michael.selik@gmail.com> - 2016-04-06 13:33 +0000
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 17:14 +0300
Re: Promoting Python Chris Angelico <rosuav@gmail.com> - 2016-04-07 00:20 +1000
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 21:23 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 21:50 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 22:30 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 22:22 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 22:59 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 23:39 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-07 01:03 +0300
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-07 09:30 +0300
Re: Promoting Python Ian Kelly <ian.g.kelly@gmail.com> - 2016-04-07 00:56 -0600
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-07 10:19 +0300
Re: Promoting Python Steven D'Aprano <steve@pearwood.info> - 2016-04-08 16:09 +1000
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 23:05 +0300
Re: Promoting Python BartC <bc@freeuk.com> - 2016-04-06 14:54 +0100
Re: Promoting Python Marko Rauhamaa <marko@pacujo.net> - 2016-04-06 17:08 +0300
Re: Promoting Python Larry Martell <larry.martell@gmail.com> - 2016-04-06 10:36 -0400
Re: Promoting Python Chris Angelico <rosuav@gmail.com> - 2016-04-07 00:14 +1000
Re: Promoting Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-04-06 15:20 +0100
Re: Promoting Python Ned Batchelder <ned@nedbatchelder.com> - 2016-04-06 07:34 -0700
Re: Promoting Python Ned Batchelder <ned@nedbatchelder.com> - 2016-04-06 10:55 -0700
Re: Promoting Python BartC <bc@freeuk.com> - 2016-04-06 23:24 +0100
Re: Promoting Python BartC <bc@freeuk.com> - 2016-04-06 18:04 +0100
Re: Promoting Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-04-06 08:04 -0400
Re: Promoting Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-04-06 13:39 +0100
Re: Promoting Python Steven D'Aprano <steve@pearwood.info> - 2016-04-07 03:40 +1000
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