Munkres calculates the minimum cost assignment of the assignment using the Hungarian/Munkres algorithm.

Can handle non-square cost matricies, using algorithm provded by Bougeois and Lassalle in An extension of the Munkres Algorithm for the Assignment Problem to Rectangular Matrices.

from munkres import munkres
import numpy as np
a = np.array(map(float,'7 4 3 6 8 5 9 4 4'.split()), dtype=np.double).reshape((3,3))
print munkres(a)

which should print out :

[[False False  True]
 [ True False False]
 [False  True False]]