[Python-Dev] Switch statement

[Eric Sumner]

On 6/22/06, Guido van Rossum <guido at python.org> wrote:
> (3) A switch is implemented using a dict which is precomputed at the
> same time its static expressions are precomputed. The switch
> expression must be hashable. Overlap between different cases will
> raise an exception at precomputation time.

How does this interact with __contains__, __len__, and __iter__ for
the 'case in S' statement?  Would it work with a class that only
implements __contains__, such as a continuous range class?

  -- Eric Sumner