io.UnsupportedOperation: fileno

Cameron Simpson cs at zip.com.au
Fri Nov 14 08:39:22 CET 2014


On 14Nov2014 10:52, Ben Finney <ben+python at benfinney.id.au> wrote:
>satishmlmlml at gmail.com writes:
>
>> fileno() in not supported.
>
>It is supported, but it is behaving as the documentation describes
><URL:https://docs.python.org/3/library/io.html#io.IOBase.fileno>.
>
>> Is it only in 3.1? What is the workaround?
>
>Expect an exception when you ask for the file descriptor on a stream
>that does not use a file descriptor.

However, in 3.4.2 it does work (well, on MacOSX). Just as well really, as 
stdin, stdout and stderr do eventually connect to file descriptors...

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

You wouldn't... ...but you KNOW you could.      - Original V65 Commercial



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