If everyone in the world understood and had a working command of regular expressions, everything would run smoothly. Especially if all of our interfaces to text allowed for their use. This has been pointed out. And, Automate the Boring Stuff with Python, 2nd Edition: Practical Programming for Total Beginners has a whole chapter on this.
What is a regular expression? We can talk about that in detail some other time. Briefly, it is a string of symbols that is designed to match a specified set of symbols, or a range of a set of symbols, in a larger body or stream of text. For example, if you pass a stream of information (say, all your emails) through a filter with the regular expression:
then any part of that stream of information that looks like a phone number (not using parens), such as 636-555-3226, will be isolated.
Automate the Boring Stuff with Python is a book that teaches beginning Python computer Augean programming focusing on examples from day to day life, including but well beyond REs.
The new edition includes pattern matching with regular expressions, input validation, reading and writing files, organizing files, web scraping, manipulating Excel spreadsheets and Google Sheets, PDF and Word documents, CSV and JSON files, email, images, and automating your keyboard and mouse.
The great benefit of a book like this is that you learn Python (the first part of the book gives you all you need to know to program in Python) in the context of things you actually want to do with Python. If you are interested in learning Python, or coding in general, this can be your first book.
The book is well done, as all in this series are, and fun. There are strong on line resources including all the code, and that information is regularly updated. Generally, “No Starch” press books are great, and this is one of those!
I would like to have seen at least sidebars on manipulating things using Libreoffice software, but note that the book focuses on documents, and OpenSource software does work with normal Excel and Word documents, so it is there.
The second edition adds a new chapter on input validation. The Gmail and Google Sheets sections, and the information on CSV files is also new. I plan on using the software tips and tricks to develop my own highly specialized and targeted search software. I’m often looking for files that have specific extensions, and certain kinds of content, in certain locations. Just the ability to hard-wire where to search for files will save me a lot of time and trouble.
Author Al Sweigart is a professional software developer who teaches programming to kids and adults, and who is author of Invent Your Own Computer Games with Python, Cracking Codes with Python, and Coding with Minecraft, all of which are quite nice. We need a new edition of Coding with Minecraft, by the way, that looks at a wider range of coding options and keeps up with the major advances in that software environment! So, get to work, Al!