how to copy new object insted of ponting at object python
>>> import copy
>>> xs = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
>>> zs = copy.deepcopy(xs)
>>> xs[1][0] = 'X'
>>> xs
[[1, 2, 3], ['X', 5, 6], [7, 8, 9]]
>>> zs
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]
how to copy new object insted of ponting at object python
>>> import copy
>>> xs = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
>>> zs = copy.deepcopy(xs)
>>> xs[1][0] = 'X'
>>> xs
[[1, 2, 3], ['X', 5, 6], [7, 8, 9]]
>>> zs
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]
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