New submission from STINNER Victor: Attached patch is a work-in-progress patch to use the new private _PyBytesWriter API in bytes % args.
The usage of the _PyBytesWriter API will allow further optimization. For example, it avoids the creation of a temporary bytes object to format b'%f' % 1.2. The _PyBytesWriter API allocates a small buffer of 512 bytes on the stack to delay the allocation of the final bytes objects. It can avoid the need to call _PyBytes_Resize() completly, or at least reduce the number of calls. See also the issue #25318 which added the _PyBytesWriter API. ---------- files: bytes_format.patch keywords: patch messages: 252577 nosy: ethan.furman, haypo, serhiy.storchaka priority: normal severity: normal status: open title: Use _PyBytesWriter for bytes%args type: performance versions: Python 3.6 Added file: http://bugs.python.org/file40724/bytes_format.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25349> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
