Question

How to convert a 2D list to 2D numpy array (matrix) in Python

Answer 1

import numpy as np

lst = [[1,2,3], [4,5,6], [7,8,9]]

arr = np.array(lst)

print(arr)





'''
run:

[[1 2 3]
 [4 5 6]
 [7 8 9]]

'''

 

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Answer 2

import numpy as np

lst = [[1,2,3], [4,5,6], [7,8,9]]

arr = np.matrix(lst)

print(arr)





'''
run:

[[1 2 3]
 [4 5 6]
 [7 8 9]]

'''

 

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