Pandas is a very popular Python library that provides powerful, flexible and high-performance tools to process data.

If you’re looking to get into data science, machine learning, or you just want to brush up on your analytics skills, then look no further. In this course, you’ll learn how to process and analyze data with Pandas. 

You’ll start out by covering the basic data structures in Pandas: Series and dataframes. In the latter half of the course, you’ll learn how to perform operations on different data structures, and how to optimize performance for file uploads, data filtering, and more.

Data Analysis & Processing with Pandas

`groupby` is not a single operation. Actually, it could be viewed as the following steps:

- **Splitting** data into groups based on some criteria.
- **Applying** an aggregation function on each group.
- **Combining** the results.

If you are familiar with SQL, you will know how to write in SQL with a "group by" clause.  pandas also provide such a feature.

Introduction

Basic Operations on DataFrames

Other topics

Improve performance

Grouping Data __ Part 1