How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs. Regular expressions, or “regex,” is a system for ...

In this article, I’ll first give you a short primer on regular expressions, and then I’ll show you how to use regular expressions with the open source Jakarta-ORO API. Regular expressions 101 ...

In reality, Regular Expressions (or RegEx) is a syntax to help you construct very precise search terms to find and replace bits of text in a variety of applications.

This chapter’s first section introduces and explains all the key regular expression concepts and shows pure regular expression syntax—it makes minimal reference to Python itself. Then the second ...

For system administrators, many programs can use regular expressions in configuration files, such as Apache. The “*Match” directives in Apache (i.e., <DirectoryMatch> and <RedirectMatch ...

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.