Python/Numeric users be aware!

[Benyang]

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.