m1 = Matrix([[1,1],[2,2]])
#

print m1
#result:
#
#| 1 1 |
#| 2 2 |

m2 = Matrix([[1,1],[1,1]])
m3 = m1 + m2
print m3
#
#| 2 2 |
#| 3 3 |

for v in m1:
  print v
#
# [1, 1]
# [2, 2]