Mastering Object-oriented Python by Steven Lott

By Steven Lott

This sensible example-oriented advisor will educate you complicated ideas of object-oriented programming in Python. This e-book will current distinctive examples of virtually the entire specified approach names that help growing sessions that combine seamlessly with Python's integrated good points. it is going to enable you use JSON, YAML, Pickle, CSV, XML, Shelve, and SQL to create continual items and transmit gadgets among approaches. The publication additionally covers logging, warnings, unit checking out, configuration documents, and the way to paintings with the command line.

This booklet is damaged into 3 significant elements: Pythonic periods through unique tools; patience and Serialization; checking out, Debugging, Deploying, and holding. The distinctive equipment are damaged down into a number of concentration parts: initialization, fundamentals, characteristic entry, callables, contexts, boxes, collections, numbers, and extra complicated ideas reminiscent of decorators and mixin periods.

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Before we can get to the __init__() method, however, we need to take a look at the implicit class hierarchy in Python, glancing, briefly, at the class named object. This will set the stage for comparing default behavior with the different kinds of behavior we want from our own classes. In this chapter, we take a look at different forms of initialization for simple objects (for example, playing cards). After this, we can take a look at more complex objects, such as hands that involve collections and players that involve strategies and states.

Pop() We've defined Deck so that the internal collection is a list object. The pop() method of Deck simply delegates to the wrapped list object. pop() ] Generally, a Facade design pattern or wrapper class contains methods that are simply delegated to the underlying implementation class. This delegation can become wordy. For a sophisticated collection, we may wind up delegating a large number of methods to the wrapped object. Extending a collection class An alternative to wrapping is to extend a built-in class.

We don't want to repeat things that have been thoroughly stated elsewhere. In this book, we will focus solely on Python 3. We'll refer to a number of common, object-oriented design patterns. We'll try to avoid repeating the presentation in Packt's Learning Python Design Patterns. About casino Blackjack If you're unfamiliar with the casino game of Blackjack, here's an overview. The objective is to accept cards from the dealer to create a hand that has a point total that is between the dealer's total and 21.

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