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 vonvert 1 d list to 2d list in pytohn
In [53]: l = [0,1,2,3]
In [54]: def to_matrix(l, n):
...: return [l[i:i+n] for i in xrange(0, len(l), n)]
In [55]: to_matrix(l,2)
Out[55]: [[0, 1], [2, 3]]Copyright © 2021 Codeinu
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