flatten a 2d array python
arr_2d = [[1, 2, 3], [4, 5, 6]]
arr_1d = [el for arr in arr_2d for el in arr]
print(arr_1d) # [1, 2, 3, 4, 5, 6]flatten a 2d array python
arr_2d = [[1, 2, 3], [4, 5, 6]]
arr_1d = [el for arr in arr_2d for el in arr]
print(arr_1d) # [1, 2, 3, 4, 5, 6]how to create one list from 2d list python
>>> l = [[1, 2, 3], [4, 5, 6], [7], [8, 9]]
>>> sum(l, [])
[1, 2, 3, 4, 5, 6, 7, 8, 9]Copyright © 2021 Codeinu
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