Stepping backwards in for loop?

[Robin Becker]

In article <Xns9083A46CB3B93gustaflalgonetse at 194.213.69.152>, Gustaf
Liljegren <gustafl at algonet.se> writes
>Can't figure out how to step backwards, character by character in a string. 
>I was looking for a loop countruct with a counter to handle this, but the 
>for loop in Python doesn't let me step backwards. What is the alternative?
>
>Gustaf
>>> s='abcdef'
>>> for i in xrange(len(s)-1,-1,-1):
...     print s[i]
... 
f
e
d
c
b
a

you could also try
>>> for i in xrange(len(s)):
...     print s[-1-i]
...     
-- 
Robin Becker