I also found that the a[5:] problem is Python version dependent. On a 64-bit linux, of the following combinations I have tried, only the first one has the problem. The other two are ok. * Python 2.5.1 and Numeric 24.2 * Python 2.4.5 and Numeric 24.2 * Python 2.3.7 and Numeric 24.2
On Oct 29, 10:53 am, Benyang <[EMAIL PROTECTED]> wrote: > Maybe it has been reported somewhere, but it is a big surprise to me. > > # Try the following: > import Numeric > a = Numeric.ones(10) > a[5:] = -1 > print a > > It works correctly on 32-bit linux machines and on 32-bit Windows XP: > [ 1 1 1 1 1 -1 -1 -1 -1 -1] > > It is totally screwed up on 64-bit linux machines: > [1 1 1 1 1 1 1 1 1 1] > > # The following works correctly on both 32-bit and 64-bit machines > (notice the comma): > a[5:,] *= -1 > > The Python version is 2.5.1, and Numeric is the latest version 24.2. -- http://mail.python.org/mailman/listinfo/python-list
