This morning I was teaching Python (again and again), and again I was thinking we could do better about the representation of ranges.

Typically in the current repr of ranges we do not see that the end is excluded:

>>> range(10)
range(0, 10)

However it has the (little?) benefit of respecting the "repr gives valid Python".

I propose to change it to:

>>> range(10)
<range object [0, 1, ..., 8, 9]>