On Sat, Mar 1, 2014 at 7:04 PM, Eric Jacoboni <eric.jacob...@gmail.com> wrote: > In fact, i think i'm gonna forget += on lists :)
Well, do what you want, but I think you're taking the wrong lesson from this. Don't forget about using += on lists. Instead, forget about using assignments, augmented or otherwise, on tuple elements. Would you expect this to work? tup = (1, 2, 3) tup[1] += 42 I'm guessing probably not. So I have a hard time understanding why it should be expected to work any differently when the tuple element happens to be a list. The fact that the list is actually modified I think is a distraction from the main point: the error indicates that something illegal happened, not that nothing has changed. Assignments just are not allowed on tuple elements, and it doesn't matter what type they happen to be. -- https://mail.python.org/mailman/listinfo/python-list