STINNER Victor added the comment: My previous abandonned attempt was the issue #17742.
"Add _PyBytesWriter API to optimize Unicode encoders" Oh, I forgot to mention and it may also be used to optimize bytes % args. More generally, any code generating a bytes object with an unknown length is advance. Said differently: _PyBytesWriter can be used when precomputing the output length is more expensive. str % args now uses _PyUnicodeWriter but building an Unicode string is even more complex because of the different Unicode "kinds": 1, 2 or 4 bytes per character. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25318> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
