Aug. 13, 2014
6:05 p.m.
On Wed, Aug 13, 2014 at 10:46 AM, Steven D'Aprano <steve@pearwood.info> wrote:
That's another semantic change: sum() currently accepts iterators (although not *infinite* iterators). This revision has now broken tens of thousands of applications.
okay, how about: def sum(items, start=0): first = True for item in items: if first: start = start + item else: start += item return start I believe that has the same effect as my other two, but only adds the requirement that "value += item" behaves the same as "value = value + item". Chris