eselect list is not correct.

Use: eselect python list (or whatever other app you wish to select a specific version of)

Then: 
eselect python set (with the number of the option you want which was displayed from 'eselect python list').

2011/3/26 Andrzej Styczeń <styczen_andrzej@o2.pl>
On Saturday 26 of March 2011 17:17:41 Mick wrote:
> What does eselect python list shows?

The same as 'eselect read 1'

# eselect list
!!! Error: Can't load module list
exiting

If I wrote:
# eselect
Usage: eselect <global options> <module name> <module options>

Global options:
 --brief                   Make output shorter
 --no-color,--no-colour    Disable coloured output

Built-in modules:
 help                      Display a help message
 usage                     Display a usage message
 version                   Display version information

Extra modules:
 bashcomp                  Manage contributed bash-completion scripts
 binutils                  Manage installed versions of sys-devel/binutils
 blas                      Manage installed BLAS implementations
 boost                     Manage boost installations
 cblas                     Manage installed CBLAS implementations
 editor                    Manage the EDITOR environment variable
 env                       Manage environment variables set in /etc/env.d/
 esd                       Select esound daemon or wrapper
 fontconfig                Manage fontconfig /etc/fonts/conf.d/ symlinks
 kernel                    Manage the /usr/src/linux symlink
 lapack                    Manage installed LAPACK implementations
 mesa                      Manage the OpenGL driver architecture used by
media-libs/mesa
 modules                   A module for querying modules. By default, it
lists all available modules
 news                      Read Gentoo ("GLEP 42") news items
 opengl                    Manage the OpenGL implementation used by your
system
 pager                     Manage the PAGER environment variable
 profile                   Manage the /etc/make.profile symlink
 python                    Manage Python symlinks
 rc                        Manage /etc/init.d scripts in runlevels
 ruby                      Manage ruby symlinks
 visual                    Manage the VISUAL environment variable