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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Improving performance with an ordered collection

When simulating card games, the player's hand can be modeled as a set of cards or a list of cards. With most conventional single-deck games, a set collection works out nicely because there's only one instance of any given card, and the set class can do very fast operations to confirm whether a given card is or is not in the set.

When modeling Pinochle, however, we have a challenging problem. The Pinochle deck is 48 cards; it has two each of the 9, 10, Jack, Queen, King, and ace cards. A simple set object won't work well when duplicates are possible; we would need a multiset or bag. A multiset is a set-like collection that permits duplicate items.

In a multiset, a membership test becomes a bit more complex. For example, we can add the Card(9,'') object to a bag collection more than once, and then also remove it more than one time.

We have a number of ways to create a multiset:

  • We can...