Raymond Hettinger <rhettin...@users.sourceforge.net> added the comment:
That is the documented and tested behavior: http://docs.python.org/library/collections.html#ordereddict-objects """ Equality tests between OrderedDict objects are order-sensitive and are implemented as list(od1.items())==list(od2.items()). Equality tests between OrderedDict objects and other Mapping objects are order-insensitive like regular dictionaries. This allows OrderedDict objects to be substituted anywhere a regular dictionary is used. """ It was a basic design objective for OrderedDicts to be substitutable for regular dictionaries (that is why it subclasses from dict). This lets an OD be used just about anywhere in Python where a regular dict is expected. Also look at: http://en.wikipedia.org/wiki/Liskov_substitution_principle ---------- assignee: -> rhettinger nosy: +rhettinger _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue9823> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
