method « Class « Python Tutorial

11.4.1.Methods in class
11.4.2.Intermediate Customization
11.4.3.Any Number of Items Iterator
11.4.4.__str__, __add__, __mul__,__nonzero__,__norm_cval,__cmp__
11.4.5.Wrapping Standard Types
11.4.6.The property() built-in function can take up to four arguments.
11.4.7.A setter
11.4.8.stick in a documentation string for your attribute
11.4.9.Here is our modified class inspired by the recipe:

11.4.10.Class Time with accessor methods.
11.4.11.Methods calling
11.4.12.Add method to a class from outside