STINNER Victor added the comment: INADA Naoki: "Since mutating kw dict shouldn't affect caller's dict, caller and callee can't share the dict."
Oh, I knew that, it's not the first time that I propose to implement this optimization and that I got this answer !? So I added a comment for myself, to remind me not to propose this optimization anymore :-D I close this issue. Serhiy Storchaka: "In most cases kw is empty or very small. I doubt any optimization can have significant effect." I have no opinion on Naoki's optimization idea. Naoki: Feel free to implement your idea to measure the speedup, but please open a new issue for that if you consider that it's worth it. FYI Naoki and me started to list ideas to optimize CPython 3.7: http://faster-cpython.readthedocs.io/cpython37.html ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29318> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com