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Learning Object-Oriented Programming

You're reading from   Learning Object-Oriented Programming Explore and crack the OOP code in Python, JavaScript, and C#

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Product type Paperback
Published in Jul 2015
Publisher
ISBN-13 9781785289637
Length 280 pages
Edition 1st Edition
Languages
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Author (1):
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Gaston C. Hillar Gaston C. Hillar
Author Profile Icon Gaston C. Hillar
Gaston C. Hillar
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Table of Contents (10) Chapters Close

Preface 1. Objects Everywhere FREE CHAPTER 2. Classes and Instances 3. Encapsulation of Data 4. Inheritance and Specialization 5. Interfaces, Multiple Inheritance, and Composition 6. Duck Typing and Generics 7. Organization of Object-Oriented Code 8. Taking Full Advantage of Object-Oriented Programming Index

Working with duck typing in Python


We will use the Animal base class to generalize the requirements for animals. First, we will specialize the base class in two subclasses: Dog and Frog. Then, we will create a Party class that will be able to work with instances of any Animal subclass through duck typing. We will work with a party of dogs and a party of frogs.

Then, we will create a HorseDeeJay class and generate a subclass of the Party class named PartyWithDeeJay. The new subclass will work with instances of any Animal subclass and any instance that provides the properties and methods declared in the HorseDeeJay class through duck typing. We will work with the party of dogs with a DJ.

Declaring a base class that defines the generic behavior

We will create many classes that require the following import statement:

import random

Now, we will declare a base class named Animal:

class Animal:
    dance_characters = ""
    spelled_sound_1 = ""
    spelled_sound_2 = ""
    spelled_sound_3 = ""

   ...
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Tech Concepts
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Programming languages
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