Patch # 408326 is a "bug fix" that makes slice objects comparable but explicitly NOT hashable.  I don't understand why Guido thinks this is the right behavior for them: they are immutable, have well-defined state, do not include references to mutable objects, and can be compared property for equality.  Why shouldn't they be usable as dictionary keys?  I have an application that really would like them to be usable as such.  I know I can define a class Slice of my own .. but that seems so silly.