From: Tim Peters [mailto:tim.one@comcast.net]

[Delaney, Timothy C]

...

That's what I was getting at. I know that (for example) most classes I create have less that 16 entries in their __dict__. With this change, each class instance would take (approx) twice as much memory for its __dict__. I suspect that class instance __dict__ is the most common dictionary I use.

Do they have fewer then 6 entries? Dicts with 5 or fewer entries don't change size at all (an "empty dict" comes with room for 5 entries).

No hard and fast data here. That would require grovelling through code ;) I was making an quick estimate. Off the top of my head, most classes I create have ... __init__ 3-5 other methods 3-5 instance attributes Hmm - that would only be 3-5 instance __dict__ entries, with 4-6 class __dict__ entries, correct? I was forgetting that methods are put into the instance __dict__. Bah - it's too late. It's the end of the day, and I've barely managed to get 2 hours real work done. Tim Delaney