Basics
Explore how lookahead and lookbehind assertions in Python regex let you match patterns by asserting what comes before or after a position in the text without consuming characters. Understand the four types of lookarounds and how to use them for accurate and context-sensitive string matching.
We'll cover the following...
We'll cover the following...
Lookarounds often cause confusion to new regex learners. There are four lookarounds:
(?<= … ) and (?= … ),
(?<! … ) and (?! … )
Collectively, lookbehinds and lookaheads are known as ...