[Python-Dev] Proposal: add odict to collections

["Martin v. Löwis"]

> ... like your implementation. It is not too hard to get the delitem
> O(log n) compared to your O(n), see here:
> 
> http://codespeak.net/svn/user/arigo/hack/pyfuse/OrderedDict.py
> 
> So many people are implementing this kind of data type but do not really
> care about making as fast as it could be ... IMHO yet another reason to
> ship a usable implementation with Python.

If you use a linked list instead of Python list, you can even do
deletion in O(1). Of course, memory consumption will be higher.

Regards,
Martin