'str' object does not support item assignment

[jimbo1qaz]

On Sunday, September 23, 2012 11:48:11 AM UTC-7, MRAB wrote:
> On 2012-09-23 19:31, jimbo1qaz wrote:
> 
> > spots[y][x]=mark fails with a "'str' object does not support item assignment" error,even though:
> 
> >>>> a=[["a"]]
> 
> >>>> a[0][0]="b"
> 
> > and:
> 
> >>>> a=[["a"]]
> 
> >>>> a[0][0]=1000000
> 
> > both work.
> 
> > Spots is a nested list created as a copy of another list.
> 
> >
> 
> The error suggests that spots[y] is actually a string. Printing
> 
> repr(spots) and repr(spots[y]) should tell you whether it is.

ya, I'm an idiot. I accidentally made a string instead of an array.