Associate image name with list item

[Kevin Walzer]

I'm trying to avoid a *lot* of typing in my Tkinter application by 
associating image names with items in a list. Here is my sample list:

self.catlist = [
             'all', 'installed', 'base', 'crypto', 'database', 'devel',
         'editors', 'games', 'gnome', 'graphics', 'kde', 'languages', 
'libs', 'libs_perlmods',
         'libs_pythonmods', 'libs_rubymods', 'net', 'sci', 'shells', 
'sound', 'text', 'web',
         'x11_system', 'x11-wm', 'x11'
             ]

I've also already created a bunch of images with names that correspond 
to the list above, i.e. self.all, self.installed, and so on.  Here's the 
rest of my code:

for item in self.catlist:
             print item
             self.categorytable.insert(END, item)
	    self.categorytable.cellconfigure("end,0", image=self.item)

This yields the following error:

AttributeError: item

because, of course, I don't actually have an image called self.item.

What I'm trying to do is get the value of the variable "item" and plug 
it into the image name, so that self.item actually corresponds to 
self.installed, self.base, etc. Trying something like

self.categorytable.cellconfigure("end,0", image=self.%s % item)

just yields a syntax error: SyntaxError: invalid syntax

Can anyone point me in the right direction?
-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com