Got it. Thanks everyone!
On Tue, Aug 24, 2010 at 6:22 PM, Steven D'Aprano <st...@pearwood.info>wrote: > On Wed, 25 Aug 2010 02:23:10 am Nitin Das wrote: > > alternatively you can use the lambda , reduce function for summing up > > all the numbers in a list for e.g:- > > > > lis = [1,2,3,4,5] > > p = reduce(lambda x,y : x+y, lis) > > > > p will have the value = 15. > > Sure, you *can* do this, by why would you re-invent the wheel like that? > As an exercise to teach reduce, sure, or as a demonstration of lambda, > or if you have to support Python 2.2 or older (but that's like four > versions out of date!). sum() is really the only sensible way to do it > these days. > > But if you insist on using reduce like that, it will probably be much > faster to do this: > > import operator > reduce(operator.add, lis) > > > particularly on the older versions where sum() isn't available. > > > > > -- > Steven D'Aprano > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor >
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