Re: python file API

From	Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject	Re: python file API
Date	2012-09-25 11:51 +0100
References	(3 earlier) <a8dc1fb1-b5ff-46fe-8486-91fdc2ad91de@googlegroups.com> <CAHVvXxQa08bFVJ10x75jeRYxDw4J3xPyvRauqP5haq=ppV6DKQ@mail.gmail.com> <CAMjeLr_bjbG3GA5RWux5nuz9LNeX93Eh7RLvg5i9mBsdWU8YOw@mail.gmail.com> <k3rmbv$lb9$1@ger.gmane.org> <CAHVvXxSpfsfHB14ztOD-D6_GVBUWGegjXs6Ai6vUJ1yCf7_1QA@mail.gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.1312.1348570223.27098.python-list@python.org> (permalink)

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On 25/09/2012 11:38, Oscar Benjamin wrote:
> On 25 September 2012 08:27, Mark Lawrence <breamoreboy@yahoo.co.uk> wrote:
>
>> On 25/09/2012 03:32, Mark Adam wrote:
>>
>>> On Mon, Sep 24, 2012 at 5:55 PM, Oscar Benjamin
>>> <oscar.j.benjamin@gmail.com> wrote:
>>>
>>>> try:
>>>>       f.pos = 256
>>>> except IOError:
>>>>       print('Unseekable file')
>>>
>>>
>> Something along these lines http://docs.python.org/dev/**
>> whatsnew/3.3.html#pep-3151-**reworking-the-os-and-io-**exception-hierarchy<http://docs.python.org/dev/whatsnew/3.3.html#pep-3151-reworking-the-os-and-io-exception-hierarchy>?
>
>
> I just tried to find out what error would be raised by seeking on a file
> that doesn't support seeking and II think it's just OSError in the reworked
> hierarchy. The error in Python 2.7 is
>
> Traceback (most recent call last):
>    File "tmp.py", line 2, in <module>
>      sys.stdin.seek(5)
> IOError: [Errno 29] Illegal seek
>
> This corresponds to ESPIPE from errno.h which isn't referred to anywhere in
> pip 3151:
> http://www.python.org/dev/peps/pep-3151/
>
> So I guess it would still need to be
>
> try:
>      f.pos = 256
> except OSError as e:
>      if e.errno != 29:
>          raise
>      print('Unseekable file')
>
> Oscar
>
>
>

The thing I was thinking of is actually in the thread "syntax to 
continue into the next subsequent except block" over on Python ideas.

-- 
Cheers.

Mark Lawrence.

Thread

python file API zipher <dreamingforward@gmail.com> - 2012-09-24 14:35 -0700
  Re: python file API Dave Angel <d@davea.name> - 2012-09-24 17:49 -0400
    Re: python file API Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-09-25 08:22 +0200
      Re: python file API Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-09-25 04:19 -0400
        Re: python file API Grant Edwards <invalid@invalid.invalid> - 2012-09-25 14:07 +0000
      Re: python file API Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-09-25 12:07 -0400
      Re: python file API Chris Angelico <rosuav@gmail.com> - 2012-09-26 02:12 +1000
  Re: python file API Chris Kaynor <ckaynor@zindagigames.com> - 2012-09-24 14:58 -0700
  Re: python file API Chris Angelico <rosuav@gmail.com> - 2012-09-25 08:14 +1000
    Re: python file API zipher <dreamingforward@gmail.com> - 2012-09-24 15:36 -0700
      Re: python file API Mark Adam <dreamingforward@gmail.com> - 2012-09-24 21:32 -0500
      Re: python file API Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-25 08:27 +0100
      Re: python file API Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-25 11:51 +0100
    Re: python file API zipher <dreamingforward@gmail.com> - 2012-09-24 15:36 -0700
      Re: python file API Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-25 02:28 +0000
        Re: python file API Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2012-09-25 07:25 +0200
          Re: python file API Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-25 07:28 +0000
            Re: python file API Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2012-09-25 21:40 +0200
    Re: python file API Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-25 01:33 +0000
  Re: python file API Dave Angel <d@davea.name> - 2012-09-24 18:36 -0400
  Re: python file API Ian Kelly <ian.g.kelly@gmail.com> - 2012-09-24 16:37 -0600
    Re: python file API Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2012-09-25 07:32 +0200
      Re: python file API Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-09-25 04:13 -0400
        Re: python file API Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2012-09-25 11:53 +0200
      Re: python file API Ian Kelly <ian.g.kelly@gmail.com> - 2012-09-25 03:32 -0600
  Re: python file API Chris Angelico <rosuav@gmail.com> - 2012-09-25 08:57 +1000
  Re: python file API Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-25 00:12 +0100
  Re: python file API Chris Kaynor <ckaynor@zindagigames.com> - 2012-09-24 16:14 -0700
  Re: python file API Ramchandra Apte <maniandram01@gmail.com> - 2012-09-30 05:50 -0700

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