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

A proposal under consideration by Python’s development team would finally bring pattern matching statements to the language.

Regular expressions offer a powerful way of searching texts for strings that match a particular pattern, and for replacing such strings with other strings which themselves can depend on what was ...

If you work with text, you owe it to yourself to learn regular expressions, and Patterns can help you do that--as well as figure out exactly what your search patterns are capturing.

Notice that I used an index of 1 to get the area code group. While the Groups property is zero-based, the first group (Groups (0)) is always a match of the entire regular expression. Then, each left ...