Python, for all its power and popularity, has long lacked a form of flow control found in other languages—a way to take a value and match it elegantly against one of a number of possible conditions.

Regular expressions, or “regex,” is a system for finding complex patterns in text ... You can work with match objects using these methods: When you create a Python regex, you can pass a ...

When the regular expression that you use to match the section to delete does not change ... output = matcherStartMiddle.replaceFirst(""); In Python it takes us four lines: PATTERN_END = ...

You can think of them as searching for a pattern, rather than a specific ... In this article, Hamlet Batista demonstrated how to use regex in Python to analyze server log files, for example.