Python 3 - Associating two lists

Question

I'm working on a code that generates two lists. say for ex -

L1 = ['a', 'b', 'c']
L2 = [22, 21, 23]

How can i associate both the lists L1 and L2. I need to arrange L1 based on L2

For ex - if L2 is increasing L1 should be -

L1 = ['b', 'a', 'c']

if L2 is decreasing L1 should be -

L2 = ['c', 'a', 'b']

and so on..

I believe I understand what you want, but your example is rather confusing at this point (*IMO*) — miradulo, Apr 09 '15 at 15:21
See previous answer [here](http://stackoverflow.com/questions/6618515/sorting-list-based-on-values-from-another-list) — Daniel Marasco, Apr 09 '15 at 15:21
What are `a`, `b`, and `c`? Are these variables or do you mean strings `'a'`, `'b'`, and `'c'`? — , Apr 09 '15 at 15:21
Then please [edit your question](http://stackoverflow.com/posts/29542554/edit) and make them strings. — , Apr 09 '15 at 15:25

score 3 · Accepted Answer · answered Apr 09 '15 at 15:21

3

zip the lists together, sort them, then unzip.

L1 = ['a', 'b', 'c']
L2 = [22, 21, 23]
x = zip(L2, L1)
x.sort()
L1 = zip(*x)[1]
print L1

Result:

('b', 'a', 'c')

answered Apr 09 '15 at 15:21

Kevin

1 Answers1