How do I convert my list into an array of arrays?

Question

How do I convert my list into an array of arrays? I'm not sure if I used the correct wording, but:

Here's an example:

What I have:

[[3948,1234,4928,9283,9238]]

What I am trying to have:

[[3948],
 [1234],
 [4928],
 [9283],
 [9238]]```

Thanks Guys!

What do you mean by "an array of arrays"? You've tagged this with numpy, but your output is just another regular list object. — juanpa.arrivillaga
– juanpa.arrivillaga, Commented Mar 23, 2021 at 20:59
What did np.array(alist) produce? Do you know about reshape? Or transpose? — hpaulj
– hpaulj, Commented Mar 23, 2021 at 20:59
@kcw78, I don't think he means an object dtype. It looks more like an array shape issue. — hpaulj
– hpaulj, Commented Mar 23, 2021 at 21:10

Green · Accepted Answer · 2021-03-23 21:05:07Z

3

import numpy as np
d = np.array([3948,1234,4928,9283,9238])
dd =d.reshape((5,1))
print(dd.shape)
(5, 1)
print(dd)

Output

[[3948]
 [1234]
 [4928]
 [9283]
 [9238]]

answered Mar 23, 2021 at 21:05

Green

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Comments

Cute Panda · Accepted Answer · 2021-03-23 21:02:22Z

1

This will work fine:

t = [[3948,1234,4928,9283,9238]]
k = [[i] for i in t[0]]
print(k)

Output

[[3948], [1234], [4928], [9283], [9238]]

answered Mar 23, 2021 at 21:02

Cute Panda

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user15464295 · Accepted Answer · 2021-03-23 21:01:48Z

0

You could use

array_of_arrays = [[num] for num in array]

Which creates a new list by going through every value of your previous list and adds [value] to it.

answered Mar 23, 2021 at 21:01

user15464295