Python - Clonar una Matriz

>>> import copy

>>> listOne = [{"name": "Willie", "city": "Providence, RI"}, 1, "tomato", 3.0]

>>> listTwo = listOne[:]                   # or listTwo=copy.copy(listOne)

>>> listThree = copy.deepcopy(listOne)

>>> listOne.append("kid")

>>> listOne[0]["city"] = "San Francisco, CA"

>>> print listOne, listTwo, listThree

[{'name': 'Willie', 'city': 'San Francisco, CA'}, 1, 'tomato', 3.0, 'kid']

[{'name': 'Willie', 'city': 'San Francisco, CA'}, 1, 'tomato', 3.0]

[{'name': 'Willie', 'city': 'Providence, RI'}, 1, 'tomato', 3.0]

import copy

l=[[1,2,3],[4,5,6],[7,8,9]]

clon=copy.deepcopy(l)

clon[0][0]=0

print l

print clon

[[1,2,3],[4,5,6],[7,8,9]]

[[0,2,3],[4,5,6],[7,8,9]]