Question

I have a string array, for example:

a = ['123', '456', '789']

I want to split it to form a 2-dimension char array:

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

I’m using

[[element for element in line] for line in array]

to achieve my goal but found it not easy to read, is there any built-in function or any readable way to do it?

Answer 1

Looks like a job for map:

>>> a = ['123', '456', '789']
>>> map(list, a)
[['1', '2', '3'], ['4', '5', '6'], ['7', '8', '9']]

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Relevant documentation:

• map
• list