On 5/16/2010 1:36 PM, Thomas wrote:
GreetingsI am having a darn awful time trying to update a matrix: row = dict([(x,0) for x in range(3)]) matrix = dict([(x,row) for x in range(-3,4,1)]) matrix[2][1] += 1 matrix[-1][2] += 1
Dicts are fine for sparse matrixes, but when filled in, a list of lists is perhaps easier and more efficient. And you can iterate and be guaranteed to get the sublists in the expected order.
-- http://mail.python.org/mailman/listinfo/python-list
