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Functional Python Programming, 3rd edition

Functional Python Programming, 3rd edition

By : Steven F. Lott
4.5 (28)
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Functional Python Programming, 3rd edition

Functional Python Programming, 3rd edition

4.5 (28)
By: Steven F. Lott

Overview of this book

Not enough developers understand the benefits of functional programming, or even what it is. Author Steven Lott demystifies the approach, teaching you how to improve the way you code in Python and make gains in memory use and performance. If you’re a leetcoder preparing for coding interviews, this book is for you. Starting from the fundamentals, this book shows you how to apply functional thinking and techniques in a range of scenarios, with Python 3.10+ examples focused on mathematical and statistical algorithms, data cleaning, and exploratory data analysis. You'll learn how to use generator expressions, list comprehensions, and decorators to your advantage. You don't have to abandon object-oriented design completely, though – you'll also see how Python's native object orientation is used in conjunction with functional programming techniques. By the end of this book, you'll be well-versed in the essential functional programming features of Python and understand why and when functional thinking helps. You'll also have all the tools you need to pursue any additional functional topics that are not part of the Python language.
Table of Contents (18 chapters)
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Preface
16
Other Books You Might Enjoy
17
Index

8.5 Summary

In this chapter, we’ve looked at a number of functions in the itertools module. This library module helps us to work with iterators in sophisticated ways.

We’ve looked at the infinite iterators; they repeat without terminating. They include the count(), cycle(), and repeat() functions. Since they don’t terminate, the consuming function must determine when to stop accepting values.

We’ve also looked at a number of finite iterators. Some of them are built-in, and some of them are a part of the itertools module. They work with a source iterable, so they terminate when that iterable is exhausted. These functions include enumerate(), accumulate(), chain(), groupby(), zip_longest(), zip(), pairwise(), compress(), islice(), dropwhile(), takewhile(), filterfalse(), filter(), starmap(), and map(). These functions allow us to replace possibly complex generator expressions with simpler-looking functions.

We’ve noted that functions like the tee() function...

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