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

Designing an execution framework

In this section, let’s look at the last process of designing the ABC Car Agency application where we will actually run the code generated throughout this case study:

  1. Let’s start by loading the autogenerated library:
    import abccaragencylib as carsales
  2. At this stage, we will follow a sequence of steps by implementing a façade design pattern so that we can print the specifications and features for different types of cars:
    class Queue:
        def __init__(self, makeclass, styleclass, age):
            self.makeclass = makeclass
            self.styleclass = styleclass
            self.make = self.makeclass()
            self.style = self.styleclass()
            self.new = carsales.New()
           &...