Regular Expression in Python

Regular Expression in Python

Regular Expression is also called RE or RegEx, in short. It is a sequence of characters that forms a search pattern. It is used to check whether the search pattern exists in the given string

Regular Expression is also called RE or RegEx, in short. It is a sequence of characters that forms a search pattern. It is used to check whether the search pattern exists in the given string. At first glance, It may seem complicated due to weird symbols like ^$.*+- etc. But, It’s a powerful tool that is worth learning. At the end of the article, We will see some useful regex examples of real-world applications.

Python Module (re)

Python has a module named *re, *which lets you deal with the regular expressions. Many regex functionalities are residing in the module.

import re

Let us see some important functionalities of the re module.

re.findall()

It returns a list of all matching patterns.

re.findall(pattern, string)

For example:

re.search()

It returns a match object of the first location of the pattern in the string.

re.search(pattern, string)

python regex data-science

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