[Tutor] Best Known Method for Filtering redundant list items.
greenbergj at wit.edu
Thu Nov 30 22:11:48 CET 2006
Chris Hengge wrote:
> Anyone point me to something more efficient then
> for item in list1:
> if item not in list2:
> This just seems to take a bit a time when there are thousands or dozens of
> thousands of records just to filter out the dozen or so copies..
somewhat unsurprisingly, the first thing google lists for "python list
duplicates" is a quite good ASPN recipe to do just what you want.
More information about the Tutor