Mastering Python Regular Expressions Illustrated Edition

by Felix Lopez (Author), Victor Romero (Author)

22 ratings

ISBN-13: 978-1783283156

ISBN-10: 1783283157

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Leverage regular expressions in Python even for the most complex features

About This Book

Explore the workings of Regular Expressions in Python
Learn all about optimizing regular expressions using RegexBuddy
Full of practical and step-by-step examples, tips for performance, and solutions for performance-related problems faced by users all over the world

Who This Book Is For

This book is aimed at Python developers who want to learn how to leverage Regular Expressions in Python. Basic knowledge of Python is required for a better understanding.

What You Will Learn

Explore the regular expressions syntax
Improve the readability and future maintenance of the regex
Find solutions for typical problems with regular expressions
Familiarize yourself with match and search operations
Leverage the look around technique to create powerful regular expressions
Gain insight on the uses of Groups
Get to know how the regex engine works through the Backtracking process
Enhance the performance of your regular expressions

In Detail

Regular expressions are used by many text editors, utilities, and programming languages to search and manipulate text based on patterns. They are considered the Swiss army knife of text processing. Powerful search, replacement, extraction and validation of strings, repetitive and complex tasks are reduced to a simple pattern using regular expressions.

Mastering Python Regular Expressions will teach you about Regular Expressions, starting from the basics, irrespective of the language being used, and then it will show you how to use them in Python. You will learn the finer details of what Python supports and how to do it, and the differences between Python 2.x and Python 3.x.

The book starts with a general review of the theory behind the regular expressions to follow with an overview of the Python regex module implementation, and then moves on to advanced topics like grouping, looking around, and performance.

You will explore how to leverage Regular Expressions in Python, some advanced aspects of Regular Expressions and also how to measure and improve their performance. You will get a better understanding of the working of alternators and quantifiers. Also, you will comprehend the importance of grouping before finally moving on to performance optimization techniques like the RegexBuddy Tool and Backtracking.

Mastering Python Regular Expressions provides all the information essential for a better understanding of Regular Expressions in Python.

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Editorial Reviews

About the Author

Félix López is a software developer. He started in web development and moved to software in the currency exchange market, where there were a lot of security challenges. Later, he spent four years doing an IDE to develop mobile video games for hundreds of different mobile device OS variations and doing video games too. He s currently working for ShuttleCloud, a US-based startup whose technologies are used by companies like Stanford, Harvard, and Google.

Victor Romero currently works as a solutions architect at MuleSoft, Inc. He started his career in the dot-com era and has been a regular contributor to open source software ever since. Originally from the sunny city of Malaga, Spain, his international achievements include integrating the applications present in the cloud storage of a skyscraper in New York City and creating networks for an Italian government license in Rome.

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Product details

Publisher ‏ : ‎ Packt Publishing; Illustrated edition (February 21, 2014)
Language ‏ : ‎ English
Paperback ‏ : ‎ 110 pages
ISBN-10 ‏ : ‎ 1783283157
ISBN-13 ‏ : ‎ 978-1783283156
Item Weight ‏ : ‎ 7.2 ounces
Dimensions ‏ : ‎ 7.5 x 0.25 x 9.25 inches

Best Sellers Rank: #749,399 in Books (See Top 100 in Books)
- #899 in Python Programming
- #1,537 in Software Development (Books)
- #2,130 in Computer Programming Languages

Customer Reviews:
22 ratings

About the authors

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Victor Romero
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Victor Romero currently works as Solutions Architect at MuleSoft, Inc. He started his career in the dot-com era and has been a regular contributor to open source software ever since. Originally from the sunny city of Malaga, Spain, his International achievements include integrating in to the clouds from a skyscraper in New York City and creating networks for an Italian government licensee in Rome.
See more on the author's page
Félix López
Brief content visible, double tap to read full content.
Full content visible, double tap to read brief content.
Félix López is currently working for ShuttleCloud, an American-based startup, the technology of which is used by institutions such as Stanford and Harvard, and companies such as Google.
He started his career in web development before moving to software in the currency exchange market, where there were a lot of new security challenges. Later, he spent four years doing an IDE to develop games for hundreds of different mobile device OS variations, also creating more than 50 games. Before joining ShuttleCloud, he spent two years working on applications with sensor networks, Arduino, ZigBee and custom hardware. One example detecting the need for streetlight utilities in major cities based on existing atmospheric brightness. His first experience with Python was seven years ago, mostly for small scripts, web scrapping, and so on. Since then, he has used Python for almost all his projects: websites, standalone applications... Nowadays, he uses Python along with RabbitMQ in order to integrate services.
See more on the author's page

Customer reviews

5 star		44%
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3 star		8%
2 star 0% (0%)		0%
1 star		7%

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Top reviews from the United States

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Utnapishtim

It's a good book. There are two problems nonetheless:

Reviewed in the United States on October 18, 2019

Verified Purchase

It's a good book. There are two problems nonetheless:

1- On multiple occasions the authors get ahead of themselves and use syntax or mention topics that have not yet been covered. They sometimes are aware of this and tell the reader to wait for the upcoming chapters, but there are also instances where they simply use them without any further explanation. I think this issue would be resolved if they simply rearrange the order of the chapters.

2- Some of the topics in the books are not explained sufficiently. Be it these are usually topics associated with some of the peculiarities of Python's regex flavor, but when you read these sections you feel that there is still some parts that need to be clarified. Hopefully there aren't many of these instances and usually a simple Googling would suffice to understand them.

In general it's a very good book. It gives a clear picture of Python's regex interface and "re" module. At the end you will learn how to use regular expressions in Python, but to master them you probably need experience coupled with possibly reading a few more advanced books.

2 people found this helpful

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Doc

Great Reference Book

Reviewed in the United States on June 19, 2018

Verified Purchase

I used this book to learn and master regular expressions in Python. It is easy to follow and if you study each chapter carefully you will master regular expressions. It starts out with a brief overview of regex and then transitions to specific application of regex in python. Also great to have as a desk reference.

3 people found this helpful

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reviewer777

Love this book

Reviewed in the United States on July 14, 2015

Verified Purchase

Love this book; it's the best I've seen on how to actually use regex in Python, finding it very clear and helpful. I originally learned regex using Perl, and transitioning to Python hasn't been that much fun until I got a hold of this book. Highly recommend it.

4 people found this helpful

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Sergey Aganezov jr

nice book to get you familiar with regexes in python

Reviewed in the United States on June 12, 2014

Verified Purchase

Well, to be honest I expected a bit more from this book. Author says that first chapter will be with the basic of regexes, and I did expect something more, than the regex syntax declaration. On the other hand, everything that is described in this book is described properly, with a nice language and good examples.

Overall I would suggest this book to someone who already has some background in computer science (without it book is Italy fine, but some places might be taken for granted, rather than fully understood). Python knowledge is required, but the very minimum.

4 people found this helpful

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New Media

Great Book

Reviewed in the United States on August 6, 2018

Great Learning tool.

Reviewed in the United States on October 11, 2014

Verified Purchase

Well written. Good examples.

2 people found this helpful

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Uncle Buck

The well written and clear examples are fantastic. I've been struggling with regular expressions for a ...

Reviewed in the United States on September 24, 2015

If you are getting started with regular expressions the first chapter of this book is worth the price of the book in itself.
I cannot praise this book enough. The well written and clear examples are fantastic. I've been struggling with regular expressions for a while but this book is a god send. Thank you Felix Lopez!!!!!

7 people found this helpful

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David H

A concise book that explains the theory of regular expressions and their implementation in Python

Reviewed in the United States on April 17, 2014

I was looking for a book that explained regular expression after coming across some code snippets that used regular expressions to identify the number of pages in a PDF. Whilst I was familiar with the concept of regular expressions, I had little knowledge of how they worked. This book more than filled that gap in my knowledge and did it in a very concise manner.

The book begins with a language independent look at the history and theory of regular expression. It then moves on to using regular expression in Python starting with looking at how strings work in Python, then moving onto look at how to build regular expressions using the re module. The section I found most relevant was how to extract information from a pattern - as I came to learn this is how the code snippet mentioned above worked. After this in depth look at using regular expression in Python, the book takes a brief look at grouping and look around and how to use them before finally looking at techniques for optimizing performance of regular expressions and the potential pitfalls.

This book covered the topic well and I found the book easy to read and follow through. It provided me with all I need to know about regular expression in python and, from what I've seen so far, the concepts are easily transferable to other languages. I also discovered several uses for regular expressions I was not aware of such as being able to split by the appearance of a particular character - something I assume excel does when importing files separated by a tab or comma. Excellent book!

10 people found this helpful

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Top reviews from other countries

Translate all reviews to English

Deep dive into Regular Expressions in Python.

Reviewed in the United Kingdom on January 5, 2020

Verified Purchase

A great, concise and thorough book on using Regex in Python. Excellent, thoroughly recommended.

Alessandro

Tanto vale andare su python dot org...

Reviewed in Italy on December 11, 2016

Verified Purchase

Poco di più e spesso di meno di quel che si trova nella documentazione ufficiale sulla libreria re on line. Solo scritta peggio. Ne vale la pena se, e solamente se, siete degli aficionados della carta stampata.

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Javier Angulo Lucerón

Great and simple book!

Reviewed in Spain on June 8, 2014

Verified Purchase

It's a really well written book, with tons of examples to allow you understand from the basics to the most advanced features. I'm starting to leverage regular expressions thanks to this book, quite recommended.

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Mastering Python Regular Expressions Illustrated Edition

About This Book

Who This Book Is For

What You Will Learn

In Detail

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