Sumarizing:
On Wed, Feb 29, 2012 at 1:22 AM, Zack Baker <zbaker1...@gmail.com> wrote:
> blitted correctly i think but i keep getting... KeyError: 4
>
KeyError: 4
You're accessing a dictionary with key = 4 and there is no such key in the
dict. See:
> arrowpos = { 0 : (100,20) , 1:(100,40) , 2:(100,60) , 3 :(100,60) }
>
arrowpos[0] exists. And also arropos[1], [2] and [3]. But not arrowpos[4].
So you should never access arrowpos[4], that would raise a KeyError: 4
error.
And why are you accesing arrowpos[4]? :
Due to this:
1.- Here you access arrowpos, notice that is via the "counter" variable:
> menuscreen.blit(arrow,arrowpos[counter])
>
So, "counter", somewhere can reach the value "4", and it shouldn't.
Where? Here:
> if event.key == K_DOWN:
> if counter < 4:
> counter += 1
> menuscreen.blit(arrow,arrowpos[counter])
>
>
if counter < 3:
counter += 1
When counter is 3, and you press K_DOWN, you increment it from 3 to 4 via
counter+=1.
The right code should be:
if counter < 3:
instead of
if counter < 4:
This way you only will increase "counter" if it's < 3,
counter = 0 -> counter = 1
counter = 1 -> counter = 2
counter = 2 -> counter = 3
counter = 3 -> IF FAILS -> counter never reaches 4
I hope the explanation it's clear.
See you!
--
Santiago Romero
Ubuntu GNU/Linux
http://www.sromero.org
