On 1 сен, 03:31, Steven D'Aprano <st...@remove-this- cybersource.com.au> wrote: > On Mon, 31 Aug 2009 10:21:22 -0700, zaur wrote: > > As a result of this debate is not whether we should conclude that there > > should be two types of integers in python: 1) immutable numbers, which > > behave as constant value; 2) mutable numbers, which behave as variable > > value? > > What can you do with mutable numbers that you can't do with immutable > ones, and why do you want to do it? > > -- > Steven
Mutable numbers acts as variable quantity. So when augmented assignment is used there is no need to create a new number object in every binary operation. But when I looked now into source of python int (longobject.c) I realized that direct implementation of mutable int will not give any benefit against defining proxy int class, which supports mutability. -- http://mail.python.org/mailman/listinfo/python-list
