newbie question on lists, getting an error on basic addition

[Aahz]

In article <uggeauc292padb9gk6ghcmghv82g888i3l at 4ax.com>,
John Warney  <john at yahoo.com> wrote:
>
>>>> alist = [1, 2, 3, 4]
>>>> counter = 0
>>>> answer = 0
>>>> alist
>[1, 2, 3, 4]
>>>> counter
>0
>>>> answer
>0
>>>> while counter < 6:
>... 	answer = answer + alist[counter]
>... 	counter = counter + 1
>... 	
>Traceback (most recent call last):
>  File "<interactive input>", line 2, in ?
>IndexError: list index out of range
>>>> answer
>10

Add a print counter at the top of your loop and you'll see why.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

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