With a Python list, you can group Python objects together in a one-dimensional row that allows objects to be accessed by position, added, removed, sorted, and subdivided.

As an FYI, nosferatu-man's and my solutions are better than S. Carton's, but require Python 2.4. The "key" parameter to sort/sorted does a "Decorate-Sort-Undecorate" [1] automatically, whereas the ...