Ian Kelly <ian.g.ke...@gmail.com> writes: > With regard to key insertion and deletion while iterating over a dict > or set, though, there is just no good reason to be doing that > (especially as the result is very implementation-specific), and I > wouldn't mind a more complete low-level check against it as long as > it's not too expensive (which is not clearly the case with the current > suggestion at all).
One possible approach is to freeze the dictionary against modification while any iterator is open on it. You could keep a count of active iterators in the dict structure, adjusting it whenever an iterator is created or closed/destroyed. -- http://mail.python.org/mailman/listinfo/python-list
