![]() ![]() Lambda function opens the whole new possibilities of renaming columns as you want just with a line of code. In the following set of examples, we will learn. Rather than doing this manually, we have done this with the lambda function as shown below. You can rename a single column or multiple columns of a pandas DataFrame using () method. In our example, we wish to add the prefix ‘Cmp_’ in front of every column name. This really adds to the flexibility and power that rename() function offers. If you wish to change rename columns of pandas dataframe programmatically it can be done by rename() by using lambda function. Out: EMPLOYEE_NO EMPLOYEE_NAME DEPARTMENT 0 E0001 John Sales 1 E0002 Ron Sales 2 E0003 Sam Finance 3 E0004 Alice FinanceĮxample 7 – Rename Pandas Column Names with Lambda Function In : df.rename(columns= str.upper, inplace = True) Just like the above example, we can also change column names to upper cases with rename() function as shown below. Out : employee_no employee_name department 0 E0001 John Sales 1 E0002 Ron Sales 2 E0003 Sam Finance 3 E0004 Alice FinanceĮxample 6 – Change Column Names to Upper Case in Pandas Call the rename method and pass columns that contain dictionary and inplacetrue as an argument. Create a dictionary and set key old name, value new name of columns header. ![]() Create a data frame with multiple columns. In : df.rename(columns= str.lower, inplace = True) How do I rename a column in a DataFrame list Way 1: Using rename () method. It is quite easy to rename all columns of pandas dataframe to lower case with rename() function as shown in the below example. How do I rename multiple columns in a data frame Way 1: Using rename () method Import pandas. Out : Emp_Id Emp_Name Department 0 E0001 John Sales 1 E0002 Ron Sales 2 E0003 Sam Finance 3 E0004 Alice FinanceĮxample 5 – Rename Column Names to Lower Case in Pandas Let us create a sample dataframe in pandas that will be used in all the subsequent examples to change column name in Pandas.ĭata =, inplace = True) In specific we will cover three main approaches of columns attribute, set_axis(), and rename() function for pandas rename of columns along with examples. In this tutorial, we will show you various ways how to rename column in Pandas dataframe. 5.5 Example 7 – Rename Pandas Column Names with Lambda Function How to Rename Columns in Pandas?.5.4 Example 6 – Change Column Names to Upper Case in Pandas.5.3 Example 5 – Rename Column Names to Lower Case in Pandas.5 Rename Column Names in Pandas with rename(). ![]()
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