[Tutor] designing a class

[Christopher Spears]

Here is an exercise out of Learning Python:

Write a class called Mylist that shadows ("wraps") a
Python list: it should overload most list operators
and operations including +, indexing, iteration,
slicing, and list methods such as append and sort. 
See the Python reference manual for a list of possible
methods to support.  Also, provide a constructor for
your class that takes an existing list (or a Mylist
instance) and copies it components inro an instance
member.

When I read this, I feel like a deer caught in the
headlights.  Where should I begin?  How do I go about
designing a new class?