[Zope] _.getitem('some.ext') shorthand?

[Stefan Hoffmeister]

Given this working DTML

  <dtml-with "graphic">
    <dtml-var "_.getitem('pythonpowered.gif')">
  </dtml-with>

- what would be a "shorter", more maintenance-friendly version?

I would favour

   <dtml-var "graphic.pythonpowered">

but the problem is that I definitely must serve the file with a dotted
file extension - there is no way around this.

Any ideas?

Is there perhaps an alternative way around the problem? I don't really
care how to achieve the goal in a maintainable, robust manner, but in the
end the browser needs to see

    <IMG SRC="http://somewhere/graphic/pythonpowered.gif">

Thanks!

Stefan