Answers for "convert 2d list to 1d python"

convert 2d list to 1d python

import itertools

a = [[1, 2], [3, 4], [5, 6]]
list(itertools.chain.from_iterable(a))

Output:- [1, 2, 3, 4, 5, 6]

2d to 1d array python

import numpy as np  
ini_array1 = np.array([[1, 2, 3], [2, 4, 5], [1, 2, 3]])
result = ini_array1.flatten()

pass 2d array to 1d python

# 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)