[Tutor] Select distinct item form list

[Bob Gailer]

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At 08:38 AM 2/24/2003 +0100, janos.juhasz@VELUX.com wrote:
>Can someone show me a simple list comprehension to do the same thing as
>"Select distinct item form list" does in SQL
>
>So i have a list
> >>> l = (1,2,3,4,5,5,6,7,7,7,2)
>but i would have just
>l=(1,2,3,4,5,6,7)

Consider, also:

 >>> def r(a,b):
...     if a != b:l2.append(b)
...     return b
...
 >>> l = [1,2,3,4,5,5,6,7,7,7,2]
 >>> l.sort()
 >>> l2=[l[0]]
 >>> reduce(r,l)
5
 >>> l2
[1, 2, 3, 4, 5, 6, 7]



Bob Gailer
mailto:ramrom@earthling.net
303 442 2625

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