Convertir la liste 2D en 1d Python
import itertools
a = [[1, 2], [3, 4], [5, 6]]
list(itertools.chain.from_iterable(a))
Output:- [1, 2, 3, 4, 5, 6]
Sundar
import itertools
a = [[1, 2], [3, 4], [5, 6]]
list(itertools.chain.from_iterable(a))
Output:- [1, 2, 3, 4, 5, 6]import numpy as np
twoDAry = [6.4],[5.9],[5.5],[5.3],[5.1],[4.9],[4.5],[4.5],[4.5],[4.3],[4.2],[3.8],[3.5],[2.8],[2.8],[2.8]
twoDAry = np.array(twoDAry)
print(twoDAry.reshape(1, -1)[0])
# Output
# [6.4 5.9 5.5 5.3 5.1 4.9 4.5 4.5 4.5 4.3 4.2 3.8 3.5 2.8 2.8 2.8]# Create a 2D Numpy Array.
arr = np. array([[0, 1, 2],
[3, 4, 5],
[6, 7, 8]])
# convert 2D array to a 1D array of size 9.
flat_arr = np. reshape(arr, 9)