Re: fileno() not supported in Python 3.1

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Date	Fri, 14 Nov 2014 09:09:44 -0500
Subject	Re: fileno() not supported in Python 3.1
From	Joel Goldstick <joel.goldstick@gmail.com>
To	Nobody <nobody@nowhere.invalid>
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On Fri, Nov 14, 2014 at 8:59 AM, Nobody <nobody@nowhere.invalid> wrote:
> On Thu, 13 Nov 2014 15:48:32 -0800, satishmlmlml wrote:
>
>> import sys
>> for stream in (sys.stdin, sys.stdout, sys.stderr):
>>            print(stream.fileno())
>>
>>
>> io.UnsupportedOperation: fileno
>>
>> Is there a workaround?
>
> Try:
>         sys.stdin.buffer.fileno()
>
> or maybe
>
>         sys.stdin.buffer.raw.fileno()
>
> In Python 3.x, sys.stdin isn't actually a "file", it's a TextIOWrapper
> around a BufferedReader around a file (io.FileIO).
>
> TextIOWrapper is responsible for converting a stream of bytes to a stream
> of (Unicode) characters. BufferedReader is responsible for buffering (like
> C stdio).
>
A little off topic, but why not upgrade to 3.4 if you are learning
python.  I run 2.7, but I've read that much has improved in the 3.x
series since 3.1
>
> --
> https://mail.python.org/mailman/listinfo/python-list



-- 
Joel Goldstick
http://joelgoldstick.com

Thread

fileno() not supported in Python 3.1 satishmlmlml@gmail.com - 2014-11-13 15:48 -0800
  Re: fileno() not supported in Python 3.1 Ben Finney <ben+python@benfinney.id.au> - 2014-11-14 10:57 +1100
    Re: fileno() not supported in Python 3.1 satishmlmlml@gmail.com - 2014-11-13 16:08 -0800
      Re: fileno() not supported in Python 3.1 Ben Finney <ben+python@benfinney.id.au> - 2014-11-14 13:52 +1100
  Re: fileno() not supported in Python 3.1 Cameron Simpson <cs@zip.com.au> - 2014-11-14 18:36 +1100
  Re: fileno() not supported in Python 3.1 Nobody <nobody@nowhere.invalid> - 2014-11-14 13:59 +0000
    Re: fileno() not supported in Python 3.1 Joel Goldstick <joel.goldstick@gmail.com> - 2014-11-14 09:09 -0500
  Re: fileno() not supported in Python 3.1 Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-14 09:51 -0700
    Re: fileno() not supported in Python 3.1 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-15 22:23 +1100
  Re: fileno() not supported in Python 3.1 Dan Stromberg <drsalists@gmail.com> - 2014-11-15 21:25 -0800
  Re: fileno() not supported in Python 3.1 Chris Angelico <rosuav@gmail.com> - 2014-11-16 16:29 +1100

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