On Aug 20, 1:40 pm, Steven D'Aprano <steve +comp.lang.pyt...@pearwood.info> wrote: > Pardon me for breaking threading, but I don't have Max's original post.
Not sure why; I also can't see it! I'll copy it at the end just in case. > On Sat, Aug 20, 2011 at 7:20 PM, Max Moroz <maxmo...@gmail.com> wrote: > > Would it be a good idea to change Python definition so that a[10, -1, -1] > > I presume you mean slice notation a[10:-1:-1]. > > > referred to the elements starting with position 10, going down to the > > beginning? > > If this was going to be "fixed", the time was probably > about three years ago, when Python3 was just starting. Now such a change > will probably need to wait for the hypothetical Python 4000. Yeah, I was surprised that it didn't bother anyone.. > The usual advice is to do your slicing twice, reversing it the second time: > > a[0:11][::-1] > # Instead of a[10:-1:-1], which looks like it should work, but doesn't. It works nicely, but it is 1.3 times slower in my code (I am surprised the interpreter doesn't optimize this). -- http://mail.python.org/mailman/listinfo/python-list
