Let’s discuss how to add new columns to the existing DataFrame in Pandas. There are multiple ways we can do this task.
Method #2: By using DataFrame.insert()
It gives the freedom to add a column at any position we like and not just at the end. It also provides different options for inserting the column values.
Related Article : https://www.geeksforgeeks.org/adding-new-column-to-existing-dataframe-in-pandas/