Inada Naoki <songofaca...@gmail.com> added the comment:
> Changing dict.update() calling convention may save a few nanoseconds on > d1.update(d2) call, but it will make d1.update(**d2) way slower with a > complexity of O(n): d2 must be converted to 2 lists (kwnames and args) and > then a new dict should be created. But who/why use d1.update(**d2)? In case of dict(), dict(d1, **d2) was idiom to merge two dicts. But I don't know any practical usage of d1.update(**d2). d1.update(d2) should be preferred. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue29312> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
