Delve into effective data manipulation with pandas. Discover filtering, merging, grouping, and reshaping techniques through hands-on examples, best practices, and performance tips for real-world analysis.

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The course is a comprehensive guide to using pandas for data analysis. It covers a wide range of topics related to data manipulation, including filtering, merging, grouping, pivoting, and reshaping data.

In this course, you’ll learn about the best practices and efficient techniques for working with data. You’ll be provided with numerous examples of real-world data analysis problems and gain hands-on experience with the pandas library to solve them effectively. This course will also cover performance considerations and provide insights on common pitfalls to avoid when using pandas.

The course is suitable for both beginners and experienced users of pandas. It includes detailed explanations of pandas concepts and functions, as well as tips and tricks for optimizing your code. By the time you’re done with this course, you’ll be able to effectively handle data using pandas.

Effective Data Manipulation with pandas

# What is categorical data?

In pandas, the **category** data type is a hybrid data type.
It frequently has the appearance and behavior of a string but is actually an array of integers. It makes it possible to arrange data in a specific order and to store it more effectively. 

# Benefits of categorical data

When we load data, we can indicate that the data is categorical. If we know that our data is limited to a few values, we might want to use categorical data. Categorical values have a few benefits:

- They use less memory than strings.
- They improve performance.
- They can have an ordering.
- They can perform operations on categories.
- They enforce membership on values.

Categories are not limited to strings; we can also convert numbers or `datetime` values to categorical data.

# How to create a category in a series
To create a category, we pass `dtype="category"` into the Series constructor. Alternatively, we can call the `astype("category")` method on a Series:

Learn about the categorical data type in pandas.

Introduction

Series Deep Dive

DataFrames

Manipulating Data

Wrapping Up

Appendix

Categorical Data in pandas

What is categorical data?

Benefits of categorical data