On 10/26/2012 05:26 PM, Tycho Andersen wrote: > On Fri, Oct 26, 2012 at 09:49:50AM +0200, Ulrich Eckhardt wrote: >> Hi! >> >> General advise when assembling strings is to not concatenate them >> repeatedly but instead use string's join() function, because it >> avoids repeated reallocations and is at least as expressive as any >> alternative. >> >> What I have now is a case where I'm assembling lines of text for >> driving a program with a commandline interface. In this scenario, >> I'm currently doing this: >> >> args = ['foo', 'bar', 'baz'] >> line = ' '.join(args) + '\n' > Assuming it's the length of the list that's the problem, not the > length of the strings in the list... > > args = ['foo', 'bar', 'baz'] > args[-1] = args[-1] + '\n' > line = ' '.join(args) > > \t
Main problem with that is the trailing space before the newline. If that's not a problem, then fine. Not sure why we try so hard to optimize something that's going to take negligible time. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
