Regular expressions are a special sequence of characters that help you easily check if a string matches a certain pattern.
In Python, the re module is used to handle regular expressions.
The re module provides a set of functions that allow you to perform pattern matching, searching, and replacing operations within strings.
The re module gives the Python language complete regular expression capabilities.
This chapter mainly introduces the commonly used regular expression handling functions in Python. If you are not familiar with regular expressions, you can check our