Book Image

Modern Python Cookbook - Second Edition

By : Steven F. Lott
Book Image

Modern Python Cookbook - Second Edition

By: Steven F. Lott

Overview of this book

Python is the preferred choice of developers, engineers, data scientists, and hobbyists everywhere. It is a great language that can power your applications and provide great speed, safety, and scalability. It can be used for simple scripting or sophisticated web applications. By exposing Python as a series of simple recipes, this book gives you insight into specific language features in a particular context. Having a tangible context helps make the language or a given standard library feature easier to understand. This book comes with 133 recipes on the latest version of Python 3.8. The recipes will benefit everyone, from beginners just starting out with Python to experts. You'll not only learn Python programming concepts but also how to build complex applications. The recipes will touch upon all necessary Python concepts related to data structures, object oriented programming, functional programming, and statistical programming. You will get acquainted with the nuances of Python syntax and how to effectively take advantage of it. By the end of this Python book, you will be equipped with knowledge of testing, web services, configuration, and application integration tips and tricks. You will be armed with the knowledge of how to create applications with flexible logging, powerful configuration, command-line options, automated unit tests, and good documentation.
Table of Contents (18 chapters)
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Writing list-related type hints

The typing module provides a few essential type definitions for describing the contents of a list object. The primary type definition is List, which we can parameterize with the types of items in the list.

There are two common patterns to the types of items in lists in Python:

  • Homogenous: Each item in the list has a common type or protocol. A common superclass is also a kind of homogeneity. A list of mixed integer and floating-point values can be described as a list of float values, because both int and float support the same numeric protocols.
  • Heterogenous: The items in the list come from a union of a number of types with no commonality. This is less common, and requires more careful programming to support it. This will often involve the Union type definition from the typing module.

Getting ready

We'll look at a list that has two kinds of tuples. Some tuples are simple RGB colors. Other tuples are RGB...