[Python-ideas] Uniquify attribute for lists
fuzzyman at gmail.com
Fri Nov 16 14:17:56 CET 2012
On 16 November 2012 12:39, Paul Moore <p.f.moore at gmail.com> wrote:
> On 16 November 2012 12:28, Robrecht De Rouck <de.rouck.robrecht at gmail.com>wrote:
>> I just wanted to bring to your attention that an *attribute for removing
>> duplicate elements* for lists would be a nice feature.
>> *def uniquify(lis):
>> seen = set()
>> seen_add = seen.add
>> return [ x for x in lis if x not in seen and not seen_add(x)]*
>> The code is from this post<http://stackoverflow.com/questions/480214/how-do-you-remove-duplicates-from-a-list-in-python-whilst-preserving-order>. Also
>> check out this performance comparison<http://www.peterbe.com/plog/uniqifiers-benchmark> of
>> uniquifying snippets.
>> It would be useful to have a uniquify attribute for containers in
This loses order. Both solutions suffer from the problem that they only
work with hashable objects.
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