Quick Problem

[continium at gmail.com]

I am learning how to program and I only started about a month ago so
the answer to this is probably quite obvious. I'm running accross a
problem when writing a rock, paper, scissor program. Although I can
write such program in 5 minutes I want to write a program into which I
will implement many other features such as logging in, checking past
games and such.

I have an if, elif construction determening the outcome possible(not a
tie though) in everyone of these either the user or the computer wins.

Here are the errors I get:

Traceback (most recent call last):
  File "C:\Documents and Settings\admin\Desktop\test\test.py", line 59,
in -toplevel-
    win(2)
  File "C:\Documents and Settings\admin\Desktop\test\test.py", line 31,
in win
    uw = uw + 1    # user win
UnboundLocalError: local variable 'uw' referenced before assignment

Here is my code:

cw = 0   #Computer wins total
uw = 0   # User wins total

def win(who):
    if who == 1:
        cw = cw + 1    # computer win
    elif who == 2:
        uw = uw + 1    # user win

l = ['r', 'p', 's']
def rand():
    random.shuffle(l)

while 1 == 1:
    rand()
    cc = l[0]   # Computer Choice
    uc = raw_input('[r]ock, [p]aper, [s]cissor')    # User Choice
    if cc == uc:
        print 'Tie, try again'
        continue
    else:
        break
if cc == 'r' and uc == 's':
    win(1)
    print 'lose'
elif cc == 'r' and uc == 'p':
    win(2)
    print 'win'
elif cc == 'p' and uc == 'r':
    win(1)
    print 'lose'
elif cc == 'p' and uc == 's':
    win(2)
    print 'win'
elif cc == 's' and uc == 'r':
    win(2)
    print 'win'
elif cc == 's'and uc == 'p':
    win(1)
    print 'lose'

else:
    print 'ELSE ERROR'
    
print 'uw = ', uw
print 'cw = ', cw