New submission from STINNER Victor: Attached patch modifies unicode escape and raw unicode escape encoders to use the new _PyBytesWriter API.
The patch is optimized to encode Latin1 characters: encoding Latin1 characters when no character is escaped should not have to call _PyByte_Resize() at all. When characters are escaped or a BMP or non-BMP string is encoded, overallocation is used to reduce the number of _PyByte_Resize(). It uses _PyBytesWriter overallocation strategy instead of always overallocate for the worst case. _PyBytesWriter also embeds a small buffer allocated on the stack which also avoids calls to _PyBytes_Resize() when the output fits into 512 bytes. ---------- files: unicode_escape.patch keywords: patch messages: 252599 nosy: haypo, serhiy.storchaka priority: normal severity: normal status: open title: Use _PyBytesWriter for unicode escape and raw unicode escape encoders type: performance versions: Python 3.6 Added file: http://bugs.python.org/file40727/unicode_escape.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25353> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
