Re: fileno() not supported in Python 3.1

Path	csiph.com!usenet.pasdenom.info!news.etla.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed4a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path	<cameron@cskk.homeip.net>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.003
X-Spam-Evidence	'H': 0.99; 'S': 0.00; 'python.': 0.02; 'subject:not': 0.03; 'subject:Python': 0.06; 'sys': 0.07; 'ide': 0.09; 'yeah,': 0.09; 'python': 0.11; '>on': 0.16; 'from:addr:cs': 0.16; 'from:addr:zip.com.au': 0.16; 'from:name:cameron simpson': 0.16; 'message-id:@cskk.homeip.net': 0.16; 'op.': 0.16; 'received:211.29': 0.16; 'received:211.29.132': 0.16; 'received:cskk.homeip.net': 0.16; 'received:homeip.net': 0.16; 'received:optusnet.com.au': 0.16; 'received:syd.optusnet.com.au': 0.16; 'simpson': 0.16; 'workaround?': 0.16; 'wrote:': 0.18; '>>>': 0.22; 'import': 0.22; 'header:User-Agent:1': 0.23; 'connected': 0.24; 'fine': 0.24; 'cheers,': 0.24; 'file.': 0.24; "i've": 0.25; 'signed': 0.27; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'thus': 0.29; "skip:' 10": 0.31; 'workaround': 0.31; 'fri,': 0.33; 'display': 0.35; 'but': 0.35; 'there': 0.35; 'version': 0.36; '14,': 0.36; 'received:com.au': 0.36; 'charset:us-ascii': 0.36; 'nov': 0.38; 'received:211': 0.38; 'to:addr:python-list': 0.38; 'anything': 0.39; 'itself': 0.39; 'obtain': 0.39; 'to:addr:python.org': 0.39; 'skip:p 20': 0.39; 'ian': 0.60; 'first': 0.61; 'content-disposition:inline': 0.62; 'email addr:gmail.com': 0.63; 'information': 0.63; 'kind': 0.63; 'real': 0.63; 'more': 0.64; 'mar': 0.68; '"just': 0.84; '2014,': 0.84; 'streams': 0.84; 'facility,': 0.91
Date	Sat, 15 Nov 2014 13:39:58 +1100
From	Cameron Simpson <cs@zip.com.au>
To	Python <python-list@python.org>
Subject	Re: fileno() not supported in Python 3.1
MIME-Version	1.0
Content-Type	text/plain; charset=us-ascii; format=flowed
Content-Disposition	inline
In-Reply-To	<CALwzid=s7cAo6iA1yUtt4wygTLhg2rXKr6xFDrP+V7Ekjnog_g@mail.gmail.com>
User-Agent	Mutt/1.5.23 (2014-03-12)
References	<CALwzid=s7cAo6iA1yUtt4wygTLhg2rXKr6xFDrP+V7Ekjnog_g@mail.gmail.com>
X-Optus-CM-Score	0
X-Optus-CM-Analysis	v=2.1 cv=fvDlOjIf c=1 sm=1 tr=0 a=YuQlxtEQCowy2cfE5kc7TA==:117 a=YuQlxtEQCowy2cfE5kc7TA==:17 a=ZtCCktOnAAAA:8 a=PO7r1zJSAAAA:8 a=J0QyKEt1u0cA:10 a=kj9zAlcOel0A:10 a=vrnE16BAAAAA:8 a=pGLkceISAAAA:8 a=QrVWhbZvAAAA:8 a=RaqY0PCMlyZ591bSuBgA:9 a=CjuIK1q_8ugA:10
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	<https://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	<https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.15841.1416020967.18130.python-list@python.org> (permalink)
Lines	32
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1416020966 news.xs4all.nl 2884 [2001:888:2000:d::a6]:36057
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:80806

Show key headers only | View raw

On 14Nov2014 09:51, Ian Kelly <ian.g.kelly@gmail.com> wrote:
>On Fri, Nov 14, 2014 at 12:36 AM, Cameron Simpson <cs@zip.com.au> wrote:
>> On 13Nov2014 15:48, satishmlmlml@gmail.com <satishmlmlml@gmail.com> wrote:
>>> import sys
>>> for stream in (sys.stdin, sys.stdout, sys.stderr):
>>>           print(stream.fileno())
>>> io.UnsupportedOperation: fileno
>>>
>>> Is there a workaround?
>>
>> The first workaround that suggests itself it to use a more modern Python.
>> I've got 3.4.2 here, and it goes: [... works just fine ...]
>
>Why do you think the Python version has anything to do with it?
>Python 2.7.6 (default, Mar 22 2014, 22:59:56) [... works just fine ...]
>Clearly, in 2.7.6 it also "just works".

Yeah, true.

I think the consensus is now that the OP is using some kind of IDE where the IO 
streams are not connected to terminals or other real OS-level files, but to 
stream abstractions delivering the the IDE display widgetry. Thus no .fileno() 
facility, because there is no OS-level file.

But we have yet to obtain that information from the OP.

Cheers,
Cameron Simpson <cs@zip.com.au>

That's about as good as when one of my students left me a note signed
'anon.'--written on personalized stationery.
        - Ayse Sercan <ayse@netcom.com>

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

Thread

Re: fileno() not supported in Python 3.1 Cameron Simpson <cs@zip.com.au> - 2014-11-15 13:39 +1100

csiph-web