How to Lowercase in Python

Keeping text in right format is always important. The data coming out of Python eventually helps in presenting the insights. In case the texts are not in proper format, it will require additional cleaning in later stages. Fields can be present as mixed case in the text. The objective is to create column with all letters as lower case, to achieve this Python has lower function. Python string function str.lower() helps in creating lower case in Python. In this article we will learn how to do lowercase in Python with the help of an example.

Emma has customer data available with her for her company. She has Email field available. The field is all Upper case. She wants to create lower case field from the same. For example, for “[email protected]” new email should look like “[email protected]”

Python Title Case Example

• Step 1: Import all the necessary modules.

import pandas as pd

• Step 2: Use str.title function to convert text to lower case. To use this function, pass the column name along with Dataframe in the beginning which helps to identify column for lower case. Here is the syntax to lower case ‘Email’ column.

Customer_Data['Email_Updated'] = Customer_Data['Email'].str.lower()

• Step 3: Check the output data quality to assess the observations in final Dataframe.

Customer_Data.head(15)

Thus, Emma is able to create column in Dataframe as per her requirement in Python.

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