How to make a copy of a 2D array in Python? [duplicate]

python arrays object copy variable-assignment

Using deepcopy() or copy() is a good solution.For a simple 2D-array case

y = [row[:] for row in x]

python arrays object copy variable-assignment

Try this:

from copy import copy, deepcopyy = deepcopy(x)

I'm not sure, maybe copy() is sufficient.

python arrays object copy variable-assignment

For 2D arrays it's possible use map function:

old_array = [[2, 3], [4, 5]]# python2.*new_array = map(list, old_array)# python3.*new_array = list(map(list, old_array))

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