The Art of Subclassing

Summary

[EuroPython 2011] Raymond Hettinger - 24 June 2011 in "Track Spaghetti"

Description

All problems have simple, easy-to-understand, logical wrong answers. Subclassing in Python is no exception. Avoid the common pitfalls and learn everything you need to know about how subclass in Python.

• Overriding and extending

• Calling your parents

• The ellipse / circle problem - what does a subclass mean?

• Liskov Substitution Principle

• Open Closed Principle

• The facts of life when subclassing builtin types

• How to Implement Cooperative Multiple Inheritance

• A example of perfect and simple python diamond

• Beware the Concrete C API