The unitary "+" does not work for numarray 1.4.0:

python

Python 2.4.2 (#1, Oct 1 2005, 18:47:35) [GCC 4.0.2 20050821 (prerelease) (Debian 4.0.1-6)] on linux2 Type "help", "copyright", "credits" or "license" for more information.

...

...

import numarray arr = numarray.zeros((2,2)) +arr

Traceback (most recent call last): File "<stdin>", line 1, in ? AttributeError: copy