How to get an item from a simple set?

[Pete Forman]

I have a set that contains one item.  What is the best way of getting
at that item?  Using pop() empties the set.  Here is what I've tried.

Python 2.3.4 (#1, Jun 13 2004, 11:21:03)
[GCC 3.3.1 (cygming special)] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from sets import Set
>>> s = Set(['foo'])
>>> s.copy().pop()
'foo'
>>> [x for x in s][0]
'foo'
>>> s[0]
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: unindexable object

-- 
Pete Forman                -./\.-  Disclaimer: This post is originated
WesternGeco                  -./\.-   by myself and does not represent
pete.forman at westerngeco.com    -./\.-   opinion of Schlumberger, Baker
http://petef.port5.com           -./\.-   Hughes or their divisions.