Extract punctuation from the specified column of Dataframe using Regex

Prerequisite: Regular Expression in Python

In this article, we will see how to extract punctuation used in the specified column of the Dataframe using Regex.

Firstly, we are making regular expression that contains all the punctuation: [!"\$%&\'()*+,\-.\/:;=#@?\[\\\]^_`{|}~]* Then we are passing each row of specific column to re.findall() function for extracting the punctuation and then assigning that extracted punctuation to a new column in a Dataframe.

re.findall() function is used to extract all non-overlapping matches of pattern in string, as a list of strings. The string is scanned left-to-right, and matches are returned in the order found.

Syntax: re.findall(regex, string) 

Return: All non-overlapping matches of pattern in string, as a list of strings.

Now, Let's create a Dataframe:

Output:

Now, Extracting the punctuation from the column comment:

Output: