[Python-Dev] Weak dict iterators are fragile

[Antoine Pitrou]

Antoine Pitrou <solipsis <at> pitrou.net> writes:
> 
> 1. Add the safe methods listkeys(), listitems(), listvalues() which would 
> behave as the keys(), etc. methods from 2.x
> 
> 2. Make it so that keys(), items(), values() atomically build a list of 
> items internally, which makes them more costly for large weak dicts, but 
> robust.

And a third one (a bit more complicated implementation-wise):

3. Delay weak dict removals until any iteration has finished.

Regards

Antoine.