Book Image

Expert Python Programming - Fourth Edition

By : Michał Jaworski, Tarek Ziadé
Book Image

Expert Python Programming - Fourth Edition

By: Michał Jaworski, Tarek Ziadé

Overview of this book

This new edition of Expert Python Programming provides you with a thorough understanding of the process of building and maintaining Python apps. Complete with best practices, useful tools, and standards implemented by professional Python developers, this fourth edition has been extensively updated. Throughout this book, you’ll get acquainted with the latest Python improvements, syntax elements, and interesting tools to boost your development efficiency. The initial few chapters will allow experienced programmers coming from different languages to transition to the Python ecosystem. You will explore common software design patterns and various programming methodologies, such as event-driven programming, concurrency, and metaprogramming. You will also go through complex code examples and try to solve meaningful problems by bridging Python with C and C++, writing extensions that benefit from the strengths of multiple languages. Finally, you will understand the complete lifetime of any application after it goes live, including packaging and testing automation. By the end of this book, you will have gained actionable Python programming insights that will help you effectively solve challenging problems.
Table of Contents (16 chapters)
14
Other Books You May Enjoy
15
Index

System-level environment isolation

The key enabler to the rapid iteration of software implementation is the reuse of existing software components. Don't repeat yourself—this is a common mantra of many programmers. Using other packages and modules to include them in the codebase is only a part of that mindset. What can also be considered as reused components are binary libraries, databases, system services, third-party APIs, and so on. Even whole operating systems should be considered as a component that is being reused.

The backend services of web-based applications are a great example of how complex such applications can be. The simplest software stack usually consists of a few layers. Consider some imaginary application that allows you to store some information of its users and exposes it to the internet over the HTTP protocol. It could have at least the three following layers (starting from the lowest):

  • A database or other kind of...