Array delete

[Steven Bethard]

Jerry Hill wrote:
> On 1/28/07, Scripter47 <nospam at riddergarn.dk> wrote:
>> Can someone plz make a function for that takes a array, and then search
>> in it for duplicates, if it finds 2 or more items thats the same string
>> then delete all except 1.
> 
>  >>> myList = [1, 1, 2, 4, 8, 8, 8, 8, 8, 8, 10]
>  >>> myList = list(set(myList))
>  >>> print myList
> [8, 1, 2, 4, 10]
> 
> Maintaining sort order is left as an exercise for the reader.

A "simple" two-liner that maintains order:

 >>> items = [1, 1, 2, 4, 8, 8, 8, 8, 8, 8, 10]
 >>> seen = set()
 >>> [x for x in items if x not in seen and not seen.add(x)]
[1, 2, 4, 8, 10]

Mmm...  what a beautiful abuse of "and". ;-)

STeVe