>>> r=range(5,15)

>>> next(iter(r))

5

>>> next(iter(r))

5

>>> next(iter(r))

5

>>> next(iter(r))

5

>>> i=iter(r)

>>> next(i)

5

>>> next(i)

6

>>> next(i)

7

>>> next(i)

8

>>> iter(r)

<range_iterator object at 0x10b0f0630>

>>> iter(r)

<range_iterator object at 0x10b0f0750>

>>> iter(r)

<range_iterator object at 0x10b0f0c30>