Reversing list with strings in python

Question

I have this list,

last_names = [
'Hag ', 'Hag ', 'Basmestad ', 'Grimlavaag ', 'Kleivesund ',
'Fintenes ', 'Svalesand ', 'Molteby ', 'Hegesen ']

and I want to print i reversed, so 'Hegesen' comes first, then ' Molteby' and at the end 'Hag'.

I have tried last_names.reverse(), but that returnes None..

Any help?

I'm just guessing about usage here, but including a space after each last name is not good. The space belongs to last name usage, not definition! — ThinkChaos
– ThinkChaos, Commented Nov 11, 2014 at 16:50

Fred Foo · Accepted Answer · 2014-11-11 16:43:52Z

2

.reverse returns None because it reverses in-place:

>>> last_names = [
... 'Hag ', 'Hag ', 'Basmestad ', 'Grimlavaag ', 'Kleivesund ',
... 'Fintenes ', 'Svalesand ', 'Molteby ', 'Hegesen ']
>>> last_names.reverse()
>>> last_names
['Hegesen ', 'Molteby ', 'Svalesand ', 'Fintenes ', 'Kleivesund ', 'Grimlavaag ', 'Basmestad ', 'Hag ', 'Hag ']

To do this in an expression, do last_names[::-1].

answered Nov 11, 2014 at 16:43

Fred Foo

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Comments

Rafael Barros · Accepted Answer · 2014-11-11 16:45:43Z

1

As stated before, .reverse reverses the list in place, a more pythonic way to reverse a list and return it, is to use reversed:

>>> list(reversed([1,2,3]))
[3, 2, 1]

answered Nov 11, 2014 at 16:45

Rafael Barros

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