[Tutor] Newbie struggling with Tkinter/canvas tags

[Glen]

On Mon, 2005-01-31 at 09:06, Danny Yoo wrote
> 
> Here's a small example with sets to make it more clear how this set
> manipulation stuff will work:
> 
> ###
> >>> from sets import Set
> >>> numbers = range(20)
> >>> primes = [2, 3, 5, 7, 11, 13, 17, 19]
> >>> Set(numbers) - Set(primes)
> Set([0, 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18])
> ###
Thanks Danny, sets work great (inbuilt for 2.4)
I'd never heard of them before today. I look forward
to finding other uses for them.
Now I've just got to work out how to tag a list of id's...  
There doesn't seem to be a way to tag a known id, it has to be
tagged by reference from an id above or below which seems odd!