Compact syntax for 0-matrix?

[Alex]

How about this:

from copy import copy

def zeromatrix (n, m):
    line = n * [0]
    matrix = map (copy, m * [line])
    return matrix

I agree with the guy who said you should check out Numeric Python,
though.  It will probably work out to be more flexible for you, in the
long run.

Alex.