How to make this list reversing algo more efficient python

Question

I'm trying to reverse various lists, I feel my code is some what elegant, can any one make it more beautiful ?

board = [1,2,3,5]
board = [config[len(config)-1-i] for i,house in enumerate(config)]
print board

#expected output [5,3,2,1]

Ok so I just realized there's reverse() function. Still without using that, how can we reverse a list with basic operators — David Hancock, Jan 19 '16 at 15:57
Look at slice syntax `list[start:end:step]` you can simply do `list[::-1]` — AChampion, Jan 19 '16 at 15:59
Do you want more beautiful or more efficient? Question name asks A, question content asks B — Jorge Leitao, Jan 19 '16 at 16:33

score 2 · Answer 1 · answered Jan 19 '16 at 15:59

2

This should do what you want:

In [2]: board[::-1]
Out[2]: [5, 3, 2, 1]

answered Jan 19 '16 at 15:59

jrjc

score 1 · Answer 2 · answered Jan 19 '16 at 15:58

1

Use:

In[45]: board = [1,2,3,5]

In[46]: board.reverse()

In[47]: board
Out[47]: [5, 3, 2, 1]

answered Jan 19 '16 at 15:58

gtlambert

2 Answers2