Concatenate list of 1d numpy arrays to 2d numpy [duplicate]

Question

I have object contain list of numpy, like the follow:

[array([1, 2, 6]),
 array([1, 2, 7]),
 array([1, 2, 3]),
 array([3, 4, 3]),
 array([5, 6, 9]),
 array([5, 6, 7])]

How to build one numpy from them, like the follow?

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

Tom Ron · Accepted Answer · 2020-11-13 09:30:54Z

1

l = [array([1, 2, 6]),
 array([1, 2, 7]),
 array([1, 2, 3]),
 array([3, 4, 3]),
 array([5, 6, 9]),
 array([5, 6, 7])]

np.stack(l)

Output -

array([[1, 2, 6],
       [1, 2, 7],
       [1, 2, 3],
       [3, 4, 3],
       [5, 6, 9],
       [5, 6, 7]])

answered Nov 13, 2020 at 9:30

Tom Ron

6,2413 gold badges28 silver badges43 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1