Right way to io.open(...) an existing file object in Python 2.7?

[Jon Ribbens]

On 2018-01-16, Skip Montanaro <skip.montanaro at gmail.com> wrote:
> I'd like to take advantage of the seekable() method of io.IOBase with
> existing open file objects, especially the standard in/out/err file
> objects.

If it's difficult to imagine a circumstance in which you would want to
seek on stdio/out/err where you were not making some considerable error.
But they are already io objects so you can just call sys.stdin.seekable
or whatever.