How do I access the last "un-caught" variable in the interpreter?

[Remco Gerlich]

Dan Moskowitz <danielm at cronus.res.cmu.edu> wrote in comp.lang.python:
> Pretty simple question:
> 
> >>> 2+2
> 4
> >>> # can i access the 4 if i didn't catch it in a var?
> 
> Is there some variable for the last result returned from the
> interpreter?  I thought that I used to know how to do it, but I've
> forgotten.  Anyone know?
> 
> interpreter.last ?  

>>> _
4

(only works interactively)
-- 
Remco Gerlich