New submission from INADA Naoki: >From PEP393, PyUnicode_AsUCS4 is inefficient. And C implementation of io.StringIO() uses it.
That's why Python 3 is slower than Python 2 on logging_format and logging_simple benchmarks. https://mail.python.org/pipermail/speed/2017-February/000503.html Maybe, it can use _PyUnicodeWriter APIs instead. ---------- components: IO messages: 297394 nosy: inada.naoki priority: normal severity: normal status: open title: StringIO uses inefficient PyUnicode_AsUCS4 type: performance versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30815> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
