On Sat, 12 Jun 2010 12:58:19 am Alan Gauld wrote: > Have you looked at the count method of lists? > > Something like: > > counts = set(( item, mylist.count(item)) for item in mylist if > mylist.count(item) > 1)
That's a Shlemiel the Painter algorithm. http://www.joelonsoftware.com/articles/fog0000000319.html > Seems to work... You say that now, but one day you will use it on a list of 100,000 items, and you'll wonder why it takes 45 minutes to finish, and curse Python for being slow. -- Steven D'Aprano _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
