Real Python Tutorials

How to Group Data Using Polars .group_by()

How to Group Data Using Polars .group_by()

Start using Polars .group_by() to make sense of your data. This tutorial shows you how to group, aggregate, and reveal hidden insights with hands-on examples.

May 19, 2025 intermediate data-science python

Explore Real Python

Learning Paths
Guided study plans for accelerated learning

Python Tutorials
In-depth articles and step-by-step video courses

Quizzes & Exercises
Evaluate your Python knowledge with quick tests

Browse Topics
Focus on a specific area or skill level

Community Chat
Learn with other Pythonistas

Office Hours
Live Q&A calls with experts from Real Python

Podcast
Hear what’s new in the world of Python

Books
Round out your knowledge and learn offline

Reference
Concise definitions for common Python terms

Code MentorBeta
Personalized code assistance & intelligent learning tools

New Releases

How to Get the Most Out of PyCon

How to Get the Most Out of PyCon US

May 14, 2025 career community

How to Deal With Missing Data in Polars

Working With Missing Data in Polars

May 13, 2025 intermediate data-science python

Python News

Python's T-Strings Coming Soon and Other Python News for May 2025

May 12, 2025 community

How to Use Loguru for Simpler Python Logging

How to Use Loguru for Simpler Python Logging

May 07, 2025 intermediate tools

The subprocess Module: Wrapping Program With Python

Using the Python subprocess Module

May 06, 2025 intermediate

Sets in Python

Sets in Python

May 05, 2025 basics python

Modern Web Automation with Python and Selenium

Modern Web Automation With Python and Selenium

Apr 30, 2025 intermediate projects testing web-scraping

Python Thread Safety: Using a Lock and Other Techniques

Thread Safety in Python: Locks and Other Techniques

Apr 29, 2025 intermediate python

Managing Python Projects With uv: An All-in-One Solution

Managing Python Projects With uv: An All-in-One Solution

Apr 28, 2025 intermediate tools

Getting Started With Python IDLE

Getting Started With Python IDLE

Apr 23, 2025 basics editors

Python and MySQL Database: A Practical Introduction

MySQL Databases and Python

Apr 22, 2025 intermediate databases data-science

Shallow vs Deep Copying of Python Objects

How to Copy Objects in Python: Shallow vs Deep Copy Explained

Apr 21, 2025 advanced python

How to Exit Loops Early With the Python Break Keyword

How to Exit Loops Early With the Python Break Keyword

Apr 16, 2025 basics python

Build a Dice-Rolling Application With Python

Creating a Python Dice Roll Application

Apr 15, 2025 basics projects

Namespaces and Scopes in Python

Namespaces in Python

Apr 14, 2025 intermediate python

Using Python's .__dict__ to Work With Attributes

Using Python's .dict to Work With Attributes

Apr 09, 2025 advanced python

Python's "in" and "not in" Operators: Check for Membership

Checking for Membership Using Python's "in" and "not in" Operators

Apr 08, 2025 basics best-practices python

Python Monthly News

Python News Roundup: April 2025

Apr 07, 2025 community