[forwarding on to list] On 27/02/2012 18:46, Ethan Furman wrote:

...

I suggested a "mutable" attribute some time ago. This could lead to finally doing away with one of Python's FAQs: Why does python have lists AND tuples? They could be unified into a single type.

If a tuple is just an immutable list it will become worse with regards to performance and memory space.

~Ethan~

Doesn't that depend on how smart the implementation is? (Of course, toggling the mutable flag could cause performance penalties, but that's something you can't do at all at the moment.) Rob