Advanced Python 3 Programming Techniques

Chapter 17. Descriptors with Class Decorators

In this section we combine descriptors with class decorators to create a powerful mechanism for creating validated attributes.

Descriptors

37

Class decorators

42

Up to now if we wanted to ensure that an attribute was set to only a valid value we have relied on properties (or used getter and setter methods). The disadvantage of such approaches is that we must add validating code for every attribute in every class that needs it. What would be much more convenient and easier to maintain, is ...