On 22 June 2011 16:53, Andrew Berg <bahamutzero8...@gmail.com> wrote: > On 2011.06.22 10:45 AM, Chetan Harjani wrote: >> why tuples are immutable whereas list are mutable? > Tuples are more efficient and more appropriate for a list of items that > doesn't need to change.
And also it sometimes useful to be sure that something can't change. In particular, efficient dictionary implementations need the keys to be immutable, because it you change a key it /really/ fouls up the look-up. -- Tim Rowe -- http://mail.python.org/mailman/listinfo/python-list
