A full-blown programming language like Java or Python can do many things ... to read at a glance, as every character in a regex potentially has a special significance. This is why regex has ...

How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs ... makes use of some special features in regular expressions.

Regular Expressions (Regex) are a combination of characters which means it is a search pattern. The most common use cases involve string manipulation, validation, or pattern matching.