New submission from STINNER Victor <victor.stin...@gmail.com>: I just added a new "unicode_writer" API for the issue #14687 (Optimize str%tuple for the PEP 393) which helps to make "str%tuple" between 25% and 30% faster.
Attached patch replaces PyAccu API with the unicode_writer API for str.format(). Python 3.2: 1000000 loops, best of 3: 0.198 usec per loop 100000 loops, best of 3: 11.3 usec per loop 10000000 loops, best of 3: 0.167 usec per loop 1000000 loops, best of 3: 0.494 usec per loop Python 3.3: 1000000 loops, best of 3: 0.293 usec per loop 10000 loops, best of 3: 20.2 usec per loop 1000000 loops, best of 3: 0.219 usec per loop 1000000 loops, best of 3: 0.909 usec per loop Python 3.3 + patch (speed up of the patch): 1000000 loops, best of 3: 0.226 usec per loop (-22%) 100000 loops, best of 3: 14.8 usec per loop (-26%) 1000000 loops, best of 3: 0.219 usec per loop (0%) 1000000 loops, best of 3: 0.658 usec per loop (-27%) ---------- components: Interpreter Core files: unicode_format_writer.patch keywords: patch messages: 159879 nosy: haypo, kristjan.jonsson, loewis, pitrou, python-dev, storchaka priority: normal severity: normal status: open title: Use unicode_writer API for str.format() type: performance versions: Python 3.3 Added file: http://bugs.python.org/file25445/unicode_format_writer.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue14716> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
