Regular expressions, or “regex,” is a system for finding complex patterns in text. ... we’ll take a quick tour of the Python regular expression library and how to get the most out of it.

Previous PEPs to add pattern matching — PEP 275 and PEP 3103, proposed in 2001 and 2006 respectively — were turned down due to lack of popular support.PEP 3103 was drafted by Python creator ...

A good book on regular expressions is Mastering Regular Expressions by Jeffrey E. F. Friedl, ISBN 0596528124. It does not explicitly cover Python, but Python’s re module offers very similar ...

Still, for $3, Patterns is a helpful addition to the toolkit of anyone who builds regular expressions with regularity. If you work with text, you owe it to yourself to learn regular expressions ...