[Numpy-discussion] bug in negative stride indexing for empty arrays

1 Jun 2002

      Hi,

I just ran across a situation where reversing an empty array using a negative
stride populates it with a new element.  I'm betting this isn't the intended
behavior.

An example code snippet is below.

eric

C:\home\ej\wrk\chaco>python
Python 2.1.3 (#35, Apr  8 2002, 17:47:50) [MSC 32 bit (Intel)] on win32
Type "copyright", "credits" or "license" for more information.
...
...
...
from Numeric import *
import Numeric
Numeric.__version__
'21.0'
a = array(())
a
zeros((0,), 'l')
len(a)
0
b = a[::-1]
len(b)
1
b
array([0])
--
Eric Jones <eric at enthought.com>
Enthought, Inc. [www.enthought.com and www.scipy.org]
(512) 536-1057