On Tue, Feb 12, 2013 at 1:03 PM, Maciej Fijalkowski <fij...@gmail.com> wrote: > Hi > > We recently encountered a performance issue in stdlib for pypy. It > turned out that someone commited a performance "fix" that uses += for > strings instead of "".join() that was there before. > > Now this hurts pypy (we can mitigate it to some degree though) and > possible Jython and IronPython too. Just to confirm Jython does not have optimizations for += String and will do much better with the idiomatic "".join().
-Frank _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
