Book Image

Metaprogramming with Python

By : Sulekha AloorRavi
Book Image

Metaprogramming with Python

By: Sulekha AloorRavi

Overview of this book

Effective and reusable code makes your application development process seamless and easily maintainable. With Python, you will have access to advanced metaprogramming features that you can use to build high-performing applications. The book starts by introducing you to the need and applications of metaprogramming, before navigating the fundamentals of object-oriented programming. Next, you will learn about simple decorators, work with metaclasses, and later focus on introspection and reflection. You’ll also delve into generics and typing before defining templates for algorithms. As you progress, you will understand your code using abstract syntax trees and explore method resolution order. This Python book also shows you how to create your own dynamic objects before structuring the objects through design patterns. Finally, you will learn simple code-generation techniques along with discovering best practices and eventually building your own applications. By the end of this learning journey, you’ll have acquired the skills and confidence you need to design and build reusable high-performing applications that can solve real-world problems.
Table of Contents (21 chapters)
1
Part 1: Fundamentals – Introduction to Object-Oriented Python and Metaprogramming
4
Part 2: Deep Dive – Building Blocks of Metaprogramming I
11
Part 3: Deep Dive – Building Blocks of Metaprogramming II

Extending to multiple inheritance

Python also supports multiple inheritance, where we can import a subclass from more than one base class or parent class. In such a scenario, the child class or the subclass inherits all the attributes and methods of the base classes. In this example, we will create two base classes, Product and Branch, and let the Sales class inherit both these base classes. Here is a quick representation of the logic we’d be using:

Figure 2.8 – Multiple inheritance example

In the following code, we will be creating a Product class where we will define the attributes for a product and a get_product method to return the product details:

class Product:  
    _product_id = 100902  
    _product_name = 'Iphone X'  
    _product_category = 'Electronics'  
 ...