28 Mar
2013
28 Mar
'13
10:15 a.m.
On 28/03/2013 05:28, Bruce Leban wrote:
On Wed, Mar 27, 2013 at 10:11 PM, Shane Green <shane@umbrellacode.com <mailto:shane@umbrellacode.com>> wrote:
[seen.added(value) for value in sequence if value not in seen] *
Here's an easy way to do it:
seen = set() seq = [3,2,1,2,3,4,5,4] [seen.add(v) or v for v in seq if v not in seen] [3, 2, 1, 4, 5] seen {1, 2, 3, 4, 5}
I think I would prefer a "unique" function that yields unique items: def unique(items): seen = set() for item in items: if item not in seen: seen.add(item) yield item
seq = [3,2,1,2,3,4,5,4] list(unique(seq)) [3, 2, 1, 4, 5]