Series, dataframes, and indexing

A dataframe is columns of typed series sharing an index. Once the index clicks, selection with loc and iloc stops being guesswork.

What this lesson covers

• Create dataframes and inspect their dtypes
• Select rows and columns with loc and iloc
• Understand why the index matters

This lesson sits in pandas Essentials, part of Python for Data Work. It assumes what came before it and leads directly into the next lesson in the module.