Learn about what a regular expression is and why you would use one. Dive into the basics of regular expressions and give examples of wildcards, repetition qualifiers, escapare characters, and more. Explore advanced regular expressions and deep dive on repetition qualifiers. Tackle exercises in capturing groups and extracting PIDs using regexes.

0:00 Introduction to Regular Expressions
1:19 What are Regular Expressions?
3:58 Why Use Regular Expressions?
6:48 Basic Matching with grep
12:00 Simple Matching in Python
16:48 Wildcards and Character Classes
22:48 Repetition Qualifiers
27:42 Escaping Characters
31:45 Regular Expressions in Action
36:55 Capturing Groups
42:47 More on Repetition Qualifiers
47:03 Extracting a PID Using Regexes in Python
51:46 Splitting and Replacing

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