Splitting list in list and converting list into an integer list

Question

I am trying to spilt the following list so that I can use it for further purposes: How to split ['1,1','2,2'] into [1,1,2,2] in python?

Possible duplicate of [Convert all strings in a list to int](http://stackoverflow.com/questions/7368789/convert-all-strings-in-a-list-to-int) — depperm, Feb 27 '17 at 13:29
It would be useful if you show what code you have tried so we can help build up your knowledge. — pstatix, Feb 27 '17 at 13:30
`list(itertools.chain.from_iterable([[int(i) for i in item.split(',')] for item in lst]))` — Chris_Rands, Feb 27 '17 at 13:36

score 4 · Answer 1 · answered Feb 27 '17 at 13:36

4

This list comprehension would work -

s = ['1, 1', '2, 2']
print [int(j) for i in s for j in i.split(',')]

Output

[1, 1, 2, 2]

answered Feb 27 '17 at 13:36

hashcode55

I believe this would be the fastest out of all current answers – Vasili Syrakis Feb 27 '17 at 13:42

score 0 · Answer 2 · answered Feb 27 '17 at 13:36

0

Join the list on ',' and then split it back up and map to integers:

>>> l = ['1,1', '2,2']
>>> list(map(int, ','.join(l).split(',')))
[1, 1, 2, 2]

answered Feb 27 '17 at 13:36

TigerhawkT3

2 Answers2