Slices, appending to arbitrary position

[bearophile]

Regan Heath:

> What order do you want it in?  The index order?  If so, 
> iterating over aa.keys.sort() will give you the keys in that 
> order, and you can use that key to get the value aa[key] etc.

I also suggested this:
http://d.puremagic.com/issues/show_bug.cgi?id=10733

Bye,
bearophile