[Python-ideas] function defaults and an empty() builtin

[Terry Reedy]

On 5/20/2011 1:51 PM, Masklinn wrote:

I am as puzzled as other people.

> empty() is both an empty list (because the code iterates over a list
> for instance, or maps it, or what have you) and an assertion that
> this list is *not* to be modified.

So use () as the default. It has all the methods of [] except for the 
mutation methods.

-- 
Terry Jan Reedy