instance references?

[Scott David Daniels]

Scott David Daniels wrote:
> Alex Martelli wrote: (in effect)
>>    aptbase.drawables = weakref.WeakValueDictionary()
>> then in each __init__
>>    aptbase.drawables[len(aptbase.drawables)] = self
>> then in show:
>>    for o in aptbase.drawables.values():
>>        # render it
 >
> The keys you are choosing are probably not a good idea.
> Problem demo:
>    a,b,c = Something(), Something(), Something()
>    b = None
>    d = Something()  # overwrites the d entry.

In a tiny demo of what exactly the problem is, I managed to
mess up the comment.
     a, b, c = Something(), Something(), Something()
     b = None
     d = Something()  # overwrites the _c_ entry.

Silly me.

--Scott David Daniels
scott.daniels at acm.org