Range objects are new in 3.0; they supersede 2.x xrange objects, which are perhaps 10 years old. I do not remember that xrange objects had such attributes. On the other hand, I believe there were requests.

The request, with either implementation, seems reasonable in that range objects could be regarded as iterable slice objects. The differences are that range objects have __getitem__, __iter__, and __reversed__ special methods while slice objects have start, stop, and stop real-only attributes and the indices method. (I could not really understand the last from the doc; I had to experiment.) Starting fresh, we might do with just one class instead of two.

I guess this makes me +0.3 at the moment.