At Wed, 23 Sep 2009 18:47:05 +0000 (UTC), Grant Edwards wrote: > > I recently ran across this construct for grabbing the last > (whitespace delimited) word in a string: > > s.rsplit(None,1)[1] > > It was somewhat obvious from the context what it was supposed > to do, but it took a bit of Googling to figure out exactly what > was going on. > > When I want the last word in a string, I've always done this: > > s.split()[-1] > > I was wondering what the advantage of the rsplit(None,1)[1] > approach would be other than inducing people to learn about the > maxsplit argument that is accepted by the split() methods? >
s.rsplit(None, 1) is a cheaper operation because it splits the string *only once*. -- http://mail.python.org/mailman/listinfo/python-list
