Prints distance between all points in a 2x2 matrix

distance_matrix.py

#!/usr/bin/env python
import numpy as np
a = np.ones([2,2])

for from_rownum, row in enumerate(a):
    for from_colnum, number in enumerate(row):
        print "Cell:", from_rownum, from_colnum
        for to_rownum, row in enumerate(a):
            for to_colnum, number in enumerate(row):
                distance = np.sqrt((to_rownum - from_rownum)**2 + (to_colnum - from_colnum)**2)
                print "    to:", to_rownum, to_colnum, "distance:", distance

output.txt

./test.py
Cell: 0 0
    to: 0 0 distance: 0.0
    to: 0 1 distance: 1.0
    to: 1 0 distance: 1.0
    to: 1 1 distance: 1.41421356237
Cell: 0 1
    to: 0 0 distance: 1.0
    to: 0 1 distance: 0.0
    to: 1 0 distance: 1.41421356237
    to: 1 1 distance: 1.0
Cell: 1 0
    to: 0 0 distance: 1.0
    to: 0 1 distance: 1.41421356237
    to: 1 0 distance: 0.0
    to: 1 1 distance: 1.0
Cell: 1 1
    to: 0 0 distance: 1.41421356237
    to: 0 1 distance: 1.0
    to: 1 0 distance: 1.0
    to: 1 1 distance: 0.0