In this tutorial, we are showing how to GroupBy with a foundation Python library, Pandas.
We can’t do data science/machine learning without Group by in Python. It is an essential operation on datasets (DataFrame) when doing data manipulation or analysis.
In this complete guide, you’ll learn :
– What is a Pandas GroupBy (object).
– How to create summary statistics for groups with aggregation functions.
– How to create like-indexed objects of statistics for groups with the transformation method.
– How to use the flexible yet less efficient apply function.
– How to use custom functions for multiple columns.
If you want to master this important technique with hands-on examples, don’t miss this guide.