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Re: py3k buffered IO - flush() required between read/write?

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On 5/11/2011 3:08 PM, Genstein wrote:
> On 11/05/2011 19:24, Terry Reedy wrote:
>> writing and reading. If you want others to look at this more, you should
>> 1) produce a minimal* example that demonstrates the questionable
>> behavior, and 2) show the comparative outputs that raise your question.
>
> Thanks for a quick response. Perhaps I was being unclear - in py3k,
> given the following code and assuming no errors arise:
>
>  > f = open("foo", "w+b")
>  > f.write(b'test')
>  > f.seek(0)
>  > print(f.read(4))
>
> What is the printed result supposed to be?
>
> i) b'test'
> ii) never b'test'
> iii) platform dependent/undefined/other

Good clear question. I expect i).

With 3.2 on winxp, that is what I get with StringIO, text file, and 
bytes file (the first two with b's removed). I would expect the same on 
any system. If you get anything different, I would consider it a bug

-- 
Terry Jan Reedy

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py3k buffered IO - flush() required between read/write? Genstein <genstein@invalid.invalid> - 2011-05-11 17:27 +0100
  Re: py3k buffered IO - flush() required between read/write? Terry Reedy <tjreedy@udel.edu> - 2011-05-11 14:24 -0400
    Re: py3k buffered IO - flush() required between read/write? Genstein <genstein@invalid.invalid> - 2011-05-11 20:08 +0100
      Re: py3k buffered IO - flush() required between read/write? Terry Reedy <tjreedy@udel.edu> - 2011-05-11 17:38 -0400
        Re: py3k buffered IO - flush() required between read/write? Genstein <genstein@invalid.invalid> - 2011-05-12 14:30 +0100
          Re: py3k buffered IO - flush() required between read/write? Terry Reedy <tjreedy@udel.edu> - 2011-05-12 15:44 -0400
            Re: py3k buffered IO - flush() required between read/write? Genstein <genstein@invalid.invalid> - 2011-05-12 21:38 +0100
      Re: py3k buffered IO - flush() required between read/write? "Martin P. Hellwig" <martin.hellwig@gmail.com> - 2011-05-11 23:24 +0000

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