In the previous lesson, you learned what a DataFrame is and how to select subsets of data from one.

In this lesson, you’ll learn how to modify an existing DataFrame. Some of the skills you’ll learn include:

  • Adding columns to a DataFrame
  • Using lambda functions to calculate complex quantities
  • Renaming columns


Examine the Pandas code displayed to the right in a Jupyter Notebook. For now, don’t worry about understanding every line. These are just some examples of what you’ll be able to do by the end of this lesson!

When you’re ready, continue to the next exercise!

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