Steve Holden <st...@holdenweb.com> writes: > In mathematics mappings aren't ordered either, and a pure dict is pretty > much a mapping. So leave them alone, they are fine as they are!
Ehhh, an ordered dict has to support a comparison operation on the keys, while a Python dict has to support a hashing operation on them. Neither really captures the idea of a pure mapping, which shouldn't have to support any operations (even equality) on the keys. There have been several times when I've wished for persistent ordered dicts in Python. I started writing a big post about it a while ago and maybe I'll finish it someday. -- http://mail.python.org/mailman/listinfo/python-list
