Regular Expressions
Regular expressions (often called "regex" or "regexes") are a miniature special-purpose programming language that lives inside Python.
Regular expressions use a very similar syntax in many programming languages: JavaScript, Ruby, Perl, PHP, and many more.
Regular expressions can seem quite cryptic and quite terse because every character in a regular expression represents a whole statement and regular expressions are usually written without whitespace or comments.
Recommended Resources
- Talk: Yes, It's Time to Learn Regular Expressions by Al Sweigart
- Tutorial: Regular Expressions Tutorial by Trey Hunner
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