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From: Ben Finney <ben+python@benfinney.id.au>
Subject: Re: io.UnsupportedOperation: fileno
Date: Fri, 14 Nov 2014 10:42:12 +1100
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Xref: csiph.com comp.lang.python:80727

satishmlmlml@gmail.com writes:

> What is the problem and how to overcome this problem?

First, please provide context (just as the previous respondent did), so
your message may be understood in the absence of those prior.
<URL:https://en.wikipedia.org/wiki/Posting_style#Interleaved_style>

As to your question: Please describe what you expected, and how the
behaviour was different. Unless we know what you think is wrong, we
don't know what “the problem” is.

-- 
 \     “Sittin' on the fence, that's a dangerous course / You can even |
  `\       catch a bullet from the peace-keeping force” —Dire Straits, |
_o__)                                   _Once Upon A Time In The West_ |
Ben Finney