Recently, I got into a debate on programming.reddit.com about what should happen in the following case:
>>> a = ([1], 2) >>> a[0] += [3] Currently, Python raises an error *and* changes the first element of the tuple. Now, this seems like something one would want to change - why raise an error *and* execute the thing it was complaining about? The discussion seems to have no end, and that is why I'm posting here. I would like to know what is the opinion of the people on this group... Am I really mistaking for thinking that this is strange and unwanted behavior? Btw I understand *why* is this happening, I just think it should change... And here is the post that started this discussion: http://filoxus.blogspot.com/2007/12/python-3000-how-mutable-is-immutable.html#links Thanks for your replies -- http://mail.python.org/mailman/listinfo/python-list