Josh Rosenberg added the comment: Does it slow down other cases? Seems to me like dictionaries would have more "existing key lookups" than sets to justify the optimization, since they're used for attribute lookup and the like, and because you usually want the value associated with existing keys, where a set would usually be used in a "might exist, might not" scenario of membership testing.
---------- nosy: +josh.r _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23282> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
