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Expert Python Programming – Fourth Edition

You're reading from   Expert Python Programming – Fourth Edition Master Python by learning the best coding practices and advanced programming concepts

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Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781801071109
Length 630 pages
Edition 4th Edition
Languages
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Authors (3):
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Michał Jaworski Michał Jaworski
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Michał Jaworski
Tarek Ziade Tarek Ziade
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Tarek Ziadé Tarek Ziadé
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Tarek Ziadé
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Toc

Table of Contents (16) Chapters Close

Preface 1. Current Status of Python 2. Modern Python Development Environments 3. New Things in Python 4. Python in Comparison with Other Languages 5. Interfaces, Patterns, and Modularity FREE CHAPTER 6. Concurrency 7. Event-Driven Programming 8. Elements of Metaprogramming 9. Bridging Python with C and C++ 10. Testing and Quality Automation 11. Packaging and Distributing Python Code 12. Observing Application Behavior and Performance 13. Code Optimization 14. Other Books You May Enjoy
15. Index

Dynamic polymorphism

Polymorphism is a mechanism found commonly in OOP languages. Polymorphism abstracts the interface of an object from its type. Different programming languages achieve polymorphism through different means. For statically typed languages, it is usually achieved through:

  • Subtyping: Subtypes of type A can be used in every interface that expects type A. Interfaces are defined explicitly, and subtypes/subclasses inherit interfaces of their parents. This is a polymorphism mechanism found in C++.
  • Implicit interfaces: Every type can be used in the interface that expects an interface of type A as long as it implements the same methods (has the same interface) as type A. The declarations of interfaces are still defined explicitly but subclasses/subtypes don't have to explicitly inherit from the base classes/types that define such an interface. This is a polymorphism mechanism found in Go.

Python is a dynamically typed language, so uses...

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