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

Implementing inheritance

Inheritance in a literal sense means acquiring the properties of a parent by the child, and it means the same in the case of OOP too. A new class can inherit the attributes and methods of a parent class and it can also have its own properties and methods. The new class that inherits the parent class will be called a child class or a subclass while the parent class can also be called a base class. The following is a simple representation of it:

Figure 2.5 – Inheritance

Extending our latest class definition of Branch to have an individual class for NYC—since it has multiple intra-city branches and it also has other properties of its own in addition to the Branch class—we will be applying Inheritance to create a new subclass or child class named NYC. It has propertiessuch as having multiple hierarchies of management. NYC has a regional manager and each branch has its own branch manager. For NYC, we will also add an...