Guido van Rossum wrote:
> Guido van Rossum added the comment:
> 
> I don't understand. When does the difference matter?

When the check for fd < 0 is removed from fileio_init() there is no way
to tell if fd < 0 means fd closed or invalid fd.

In order to fix the problem with GUI apps on Windows the check for fd <
0 has to be removed (Python 2.x way). Or we use Amaury's way and open
NUL for reading and writing as a substitute for the standard streams.

Christian