Regular expressions in Python
Regular expressions, or regex for short, are patterns that are used to match text in strings. Python has built-in support for regular expressions through the re module, which allows programmers to search, replace, and manipulate text data using regex patterns. Basic syntax A regex pattern is a sequence of characters that defines a search pattern. The re module provides several functions for working with regex patterns, including match() , search() , findall() , and sub() . The basic syntax for using regex patterns in Python is as follows: import re pattern = r"regex_pattern" result = re.match(pattern, string) result = re.search(pattern, string) result = re.findall(pattern, string) result = re.sub(pattern, replacement, string) In this code block, the r before the pattern string indicates that it is a raw string, which allows backslashes to be used as literal characters in the pattern. The match() function searches for the pattern at the beginni...