INADA Naoki added the comment: > Isn't the latter case the more common one? Creating an empty dict and then > populate it.
This is memory usage optimization, not performance optimization. (But I think memory efficiency makes multi process application faster because L3 cache size is limited resource.) Later case shows how performance penalty is large. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30040> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com