Re: Getting a callable for any value?

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!xlned.com!feeder5.xlned.com!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path	<andrea.crotti.0@gmail.com>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.037
X-Spam-Evidence	'H': 0.93; 'S': 0.00; 'subject:Getting': 0.07; 'string': 0.09; 'library?': 0.09; 'def': 0.12; 'scratch': 0.16; 'wrote:': 0.18; 'library': 0.18; 'header:User-Agent:1': 0.23; 'skip:c 70': 0.24; 'header:In-Reply-To:1': 0.27; 'skip:( 20': 0.30; 'class': 0.32; 'skip:_ 10': 0.34; 'received:google.com': 0.35; 'there': 0.35; 'subject:?': 0.36; 'half': 0.37; 'message- id:@gmail.com': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'anything': 0.39; 'to:addr:python.org': 0.39; 'hope': 0.61; 'hour': 0.70; 'received:192.168.15': 0.84
DKIM-Signature	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=qZq7STnq33TfTgbGlDMA43ed6/dUSfTSxPPipSHPlY0=; b=DmWOQSD5iOUFiqR5B4OivKA6vcrYOJys1rOWAMzB6XvHuftVHruLrrdwH9ytcuuIlT JDtenBYbkOvsZAnRMi7GpT/rqvp0D7qta7IytUPzPYtz40teCckduqWVuUaexz1BWue9 rlFWu7ClfeRfwnrLyXT87LQplDLQHosGNYYi+5hkfVkrwbsf2OrDWwD2XYP/TSHnrxXd 4UrfY5HHO09NfD9xL/wnsJj6qzWxTRMtRELln1wXAf4afWZTH+/FnH+nzQuPLJ40eAur 11n5wKcG0S7v+YG1VhJcUsDO5bdVvFrtKNNr4/hcFxQO52NOHSLBBew/49972OiyWh2T 878Q==
X-Received	by 10.194.77.66 with SMTP id q2mr2084867wjw.34.1369850152921; Wed, 29 May 2013 10:55:52 -0700 (PDT)
Date	Wed, 29 May 2013 18:55:51 +0100
From	andrea crotti <andrea.crotti.0@gmail.com>
User-Agent	Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6
MIME-Version	1.0
To	python-list@python.org
Subject	Re: Getting a callable for any value?
References	<CANm61jeHSZL1FQvTr9FS0QKEhFPXug0fibXBEA-4guYF1Lf7UQ@mail.gmail.com>
In-Reply-To	<CANm61jeHSZL1FQvTr9FS0QKEhFPXug0fibXBEA-4guYF1Lf7UQ@mail.gmail.com>
Content-Type	multipart/alternative; boundary="------------000402020901030900000708"
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.15
Precedence	list
List-Id	General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe	<http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive	<http://mail.python.org/pipermail/python-list/>
List-Post	<mailto:python-list@python.org>
List-Help	<mailto:python-list-request@python.org?subject=help>
List-Subscribe	<http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.2368.1369850161.3114.python-list@python.org> (permalink)
Lines	75
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1369850161 news.xs4all.nl 15899 [2001:888:2000:d::a6]:59047
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:46398

Show key headers only | View raw

[Multipart message — attachments visible in raw view] - view raw

On 05/29/2013 06:46 PM, Croepha wrote:
> Is there anything like this in the standard library?
>
> class AnyFactory(object):
> def __init__(self, anything):
> self.product = anything
> def __call__(self):
> return self.product
> def __repr__(self):
> return "%s.%s(%r)" % (self.__class__.__module__, 
> self.__class__.__name__, self.product)
>
> my use case is: 
> collections.defaultdict(AnyFactory(collections.defaultdict(AnyFactory(None))))
>

I think I would scratch my head for a good half an hour if I see a 
string like this, so I hope there isn't anything in the standard library 
to do that :D

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread

Thread

Re: Getting a callable for any value? andrea crotti <andrea.crotti.0@gmail.com> - 2013-05-29 18:55 +0100

csiph-web