Mark Dickinson added the comment: > On other hand, this optimization already is implemented for integers, > strings, bytes and slices.
Probably for good reasons, though, that don't necessarily apply to general containers / other objects. I can see the possible value for strings and bytes, where filtering on a particular value might involve a good number of `s == s` comparisons (especially given string interning). Similarly, I could believe that small integer caching means that `0 == 0` or `1 == 1` comparisons happen often enough to make the 'is' optimisation worth it. I'm a bit bemused by the slice case, though. ---------- nosy: +mark.dickinson _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30907> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
