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Dev tools · April 6, 2020

Regexp Crash Course

A free 14-part email course in Python regexps: character classes, quantifiers, groups, anchors, and re.search, re.findall and re.sub, with daily exercises.

Regexp Crash Course launched on April 6, 2020 with 16 votes, #1,149 of 5,003 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 6 years on.

In plain words

Regexp Crash Course is a learning resource for understanding regular expressions. Launched in 2020, it provides instruction on how to work with regex patterns and syntax. The course is designed for anyone looking to learn or improve their regular expression skills, whether for programming, text processing, or data validation tasks. It offers a structured approach to mastering this technical skill through its web-based platform.

written from the facts on this page · September 2026

From the sources

Do you work with text? If you’re a programmer, the answer is almost certainly “yes.” Working with text can be easy… but searching through it can be difficult, especially if you’re trying to find complex patterns. Over the years, many programmers have learned to use regular expressions to find and retrieve patterns in text — but “regexps” (aka “regexes”) are notoriously hard to learn. I certainly remember, back in 1988, wondering how I was supposed to use this crazy syntax. I’m on a mission to teach regexps to as many people as possible. If you’re a programmer, then you can learn regexps. It’ll take some time, but you can do it! Subscribe to this 14-part e-mail course — my “regexp crash…from regexpcrashcourse.com

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