The view objects aren't sequences.  od.items() and od.keys() implement Set.  od.values() doesn't even do that much, only implementing __len__(), __iter__(), and __contains__().

The glossary implies that you should use "reversed(list(view))". [1]  More information on mapping views is located in the docs for collections.ABC and for dict. [2][3]  The source for the Mapping views is also helpful. [4]

Keep in mind that OrderedDict is not a sequence-like dict.  It is essentially just a dict with a well-defined iteration order (by insertion order). [5]  Just like its views, it should not used as a sequence.

[1] http://docs.python.org/3/glossary.html#term-view
[2] http://docs.python.org/3/library/stdtypes.html#dict-views
[3] http://docs.python.org/3/library/collections.abc.html#collections.abc.MappingView
[4] http://hg.python.org/cpython/file/3.3/Lib/collections/abc.py#l435
[5] http://docs.python.org/3.3/library/collections.html#collections.OrderedDict