I have a function that returns a multidimensional array (in Python typed as
List) and am trying to add typing to it. How do I type this 3D array in Python?
When you think about it, a multidimensional array (whether 2D, 3D, or even more D) is just nested lists of lists. Thus, for each dimension in our
List, we just have to show that there’s another
List in there.
Here’s some code:
from typing import List my_1d_array: List[int] = [i for i in range(1, 10)] print(my_1d_array) # [1, 2, 3, 4, 5, 6, 7, 8, 9] my_2d_array: List[List[int]] = [my_1d_array for i in range(1, 10)] print(my_2d_array) my_3d_array: List[List[List[int]]] = [my_2d_array for i in range(1, 10)] print(my_3d_array)
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