Subtract value from column

[jeckstrom]

This is my code thus far:

#! /usr/local/bin/python

import sys
import numpy

A = numpy.matrix([[3.8351274705,  -0.1448460097,   5.8649306918],
             [3.0383950010,   0.4744278528,   6.3044376843],
             [4.5435746933,   0.5586559729,   5.4015817017]])

What I need to be able to do is subtract the value of A(0,0) from the entire column 0. Unfortunately, I have no idea how to do this in any language except Scilab.