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
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15
Index

Various styles of event-driven programming

As we already stated, event-driven programming can be implemented at various levels of software architecture. It is also often applied to very specific software engineering areas, such as networking, system programming, and GUI programming. So, event-driven programming isn't a single cohesive programming approach, but rather a collection of diverse patterns, tools, and algorithms that form a common paradigm that concentrates on programming around the flow of events.

Due to this, event-driven programming exists in different flavors and styles. The actual implementations of event-driven programming can be based on different design patterns and techniques. Some of these event-driven techniques and tools don't even use the term event. Despite this variety, we can easily identify three major event-driven programming styles that are the foundation for more concrete patterns:

  • Callback-based style: This concentrates on the...