iterating in reverse

[Jonathan P.]

First of all, many thanks to all the people in the list
who have taken the time to respond to my earlier 
questions with excellent answers. Now on to the
problem at hand...

A list's contents are ordered such that:

>>> x=[1,2,3,4,5]

>>> for i in x:
      print i

will always print x's contents in the
same sequence.  Is there an elegant and
efficient way to iterate through x in
reverse without having to create a reversed
copy of it (i.e. y=x[:]; y.reverse())?