June 8, 2012
1:14 p.m.
Robert Kern wrote:
On Thu, Jun 7, 2012 at 7:55 PM, Neal Becker <ndbecker2@gmail.com> wrote:
In [3]: u = np.arange(10)
In [4]: u Out[4]: array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
In [5]: u[-2:] Out[5]: array([8, 9])
In [6]: u[-2:2] Out[6]: array([], dtype=int64)
I would argue for consistency it would be desirable for this to return
[8, 9, 0, 1]
Unfortunately, this would be inconsistent with Python semantics:
[~] |1> u = range(10)
[~] |2> u[-2:2] []
The fact that this proposed numpy behavior would not match python list behavior holds little weight for me. I would still favor this change, unless it added significant overhead. My opinion, of course.