Add a method to a list instance in python

Question

I want to add a method to a single instance of the \'list\' class. Example:

a = [1,2]
a.first = lambda self: return self[0]

I know this don\'t

Answer 1

Nothing will work with a native list, since you cannot add methods to a type defined in C. You will need to derive from list and add your method to that class.