Skip to Main Content
Advanced Python Programming
book

Advanced Python Programming

by Dr. Gabriele Lanaro, Quan Nguyen, Sakis Kasampalis
February 2019
Intermediate to advanced content levelIntermediate to advanced
672 pages
16h 50m
English
Packt Publishing
Content preview from Advanced Python Programming

Implementation

In this section, we will implement a data formatter. The ideas described here are based on the ActiveState Python Observer code recipe (https://code.activestate.com/). There is a default formatter that shows a value in the decimal format. However, we can add/register more formatters. In this example, we will add a hex and binary formatter. Every time the value of the default formatter is updated, the registered formatters are notified and take action. In this case, the action is to show the new value in the relevant format.

Observer is actually one of the patterns where inheritance makes sense. We can have a base Publisher class that contains the common functionality of adding, removing, and notifying observers. Our DefaultFormatter ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Advanced Python Programming - Second Edition

Advanced Python Programming - Second Edition

Quan Nguyen
Expert Python Programming - Third Edition

Expert Python Programming - Third Edition

Michał Jaworski, Tarek Ziadé, Cody Jackson
Python Workout

Python Workout

Reuven M. Lerner

Publisher Resources

ISBN: 9781838551216Supplemental Content