Tweets & replies from @realpython

@realpython18m

Installed LiteLLM recently? Here's how to check for the 1.107.0 backdoor safely, so its startup hook never fires: realpython.com/python-supply…

Supply Chain Security for the Age of AI-Speed Exploits – Real Python

Learn Python supply chain security as AI speeds up attacks: what the LiteLLM backdoor teaches, how to check your setup, and habits that last.

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Real Python · Oct 23, 2026 · 6:00 PM UTC

@realpython19m

🐍 Creating the Flask Application [Video] #python realpython.com/lessons/creat…

Creating the Flask Application – Real Python

Creating the Flask Application. In this section, you’ll learn how to create a Python Flask example application and run it locally. You’re going to initialize the project, install Flask, create the...

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Real Python · Oct 23, 2026 · 5:30 PM UTC

@realpython49m

Fair warning, these three Claude Code skills will slow you down. In return, you understand the code your agent writes, before, during, and after you build. You decide when that's worth it: youtu.be/T8WP_PP8Kp0

3 Claude Code Skills to Make Sense of AI Code

Claude Code for Python Developers (Live Course) → https://realpytho...

youtube.com

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Real Python · Oct 23, 2026 · 5:30 PM UTC

@realpython49m

GPT-6 Astra Draws a Python Reading a Book realpython.com/ai-benchmark-…

GPT-6 Astra Draws a Python Reading a Book – Real Python

Explore GPT-6 Astra's Python code, turtle drawing, and responses to small tasks that check modern syntax, release knowledge, focused edits, and made-up functions.

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Real Python · Oct 23, 2026 · 5:04 PM UTC

@realpython1h

Last chance to join Claude Code for Python Developers: the live course starts tomorrow, October 24, and runs two days on Zoom. realpython.com/workshops/cla…

Claude Code Course: Stop Copy-Pasting From ChatGPT – Real Python

Most Python developers use AI as fancy autocomplete. This 2-day course teaches you to build entire projects with an AI agent inside your codebase.

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Real Python · Oct 23, 2026 · 4:00 PM UTC

@realpython2h

Quiz: Implementing Interfaces in Python: ABCs and Protocols #python realpython.com/quizzes/inter…

Implementing Interfaces in Python: ABCs and Protocols Quiz – Real Python

Check your understanding of Python interfaces with abstract base classes, protocols, and duck typing, and how to enforce method contracts.

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Real Python · Oct 23, 2026 · 3:00 PM UTC

@realpython3h

🐍📰 Python IDEs and Code Editors (Guide) Find your perfect Python development setup with this review of Python IDEs and code editors, including recommendations and screen shots #python realpython.com/python-ides-c…

The Best IDEs and Code Editors for Python (Guide) – Real Python

Compare the best Python IDEs and code editors side by side, with free picks for beginners and pro tools for data science and AI-assisted coding.

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Real Python · Oct 23, 2026 · 2:14 PM UTC

🐍📰 Python's F-String for String Interpolation and Formatting realpython.com/python-f-stri…

Python's F-String for String Interpolation and Formatting – Real Python

Python's f-strings provide a readable way to interpolate and format strings. They're readable, concise, and less prone to error than traditional string interpolation and formatting tools, such as the...

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Real Python · Oct 23, 2026 · 2:14 PM UTC

🐍📰 NumPy Tutorial: Your First Steps Into Data Science in Python realpython.com/numpy-tutoria…

NumPy Tutorial: Your First Steps Into Data Science in Python – Real Python

In this tutorial, you'll learn everything you need to know to get up and running with NumPy, Python's de facto standard for multidimensional data arrays. NumPy is the foundation for most data science...

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Real Python · Oct 23, 2026 · 2:14 PM UTC

🐍📰 Python's property(): Add Managed Attributes to Your Classes realpython.com/python-proper…

Python's property(): Add Managed Attributes to Your Classes – Real Python

In this tutorial, you'll learn how to create managed attributes in your classes using Python's property(). Managed attributes are attributes that have function-like behavior, which allows for...

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Real Python · Oct 23, 2026 · 2:14 PM UTC

🐍📰 Get Started With Django: Build a Portfolio App realpython.com/get-started-w…

Get Started With Django: Build a Portfolio App – Real Python

In this step-by-step tutorial, you'll learn the basics of creating powerful web applications with Django, a Python web framework. You'll build an example portfolio application to showcase your web...

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Real Python · Oct 23, 2026 · 2:14 PM UTC

🐍📰 Python Web Applications: Deploy Your Script as a Flask App realpython.com/python-web-ap…

Python Web Applications: Deploy Your Script as a Flask App – Real Python

In this tutorial, you’ll learn how to go from a local Python script to a fully deployed Flask web application that you can share with the world.

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Real Python · Oct 23, 2026 · 2:14 PM UTC

🐍📰 What Is the Python Global Interpreter Lock (GIL)? realpython.com/python-gil/

What Is the Python Global Interpreter Lock (GIL)? – Real Python

Python's Global Interpreter Lock or GIL, in simple words, is a mutex (or a lock) that allows only one thread to hold the control of the Python interpreter at any one time. In this article you'll...

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Real Python · Oct 23, 2026 · 2:13 PM UTC

🐍📰 Building Serverless Python Apps Using AWS Chalice realpython.com/aws-chalice-s…

Building Serverless Python Apps Using AWS Chalice – Real Python

In this Python tutorial, you'll see just how easy it can be to get your serverless apps up and running! Chalice, a Python Serverless Microframework developed by AWS, enables you to quickly spin up...

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Real Python · Oct 23, 2026 · 2:13 PM UTC

🐍📰 Python Metaclasses realpython.com/python-metacl…

Python Metaclasses – Real Python

How Python's metaclasses work as an OOP concept, what they are good for—and why you might want to avoid them in your own programs.

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Real Python · Oct 23, 2026 · 12:06 PM UTC

@realpython6h

🐍🎧 Episode #316 of the Real Python Podcast is live: “The Future of Python Security: Trends, Challenges, and Solutions” realpython.com/podcasts/rpp/…

Episode #316: The Future of Python Security: Trends, Challenges, and Solutions – The Real Python...

How is the Python ecosystem adapting to the modern landscape of software security and supply chain defense? This week on the show, we sit down with Seth Larson, the Python Software Foundation's...

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Real Python · Oct 23, 2026 · 12:04 PM UTC

@realpython6h

❓🐍 Quiz: Using Pydantic to Simplify Python Data Validation Quiz realpython.com/quizzes/pytho…

Using Pydantic to Simplify Python Data Validation Quiz – Real Python

Test your understanding of Pydantic models, fields, validators, and settings management, and see how well you can validate data in Python.

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Real Python · Oct 23, 2026 · 3:00 AM UTC

@realpython15h

Quiz: Python 3.15 Preview: Upgraded JIT Compiler #python realpython.com/quizzes/pytho…

Python 3.15 Preview: Upgraded JIT Compiler Quiz – Real Python

Check your understanding of the Python 3.15 JIT compiler, from enabling and benchmarking it to the optimizer upgrades that make your code faster.

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Real Python · Oct 23, 2026 · 2:00 AM UTC

@realpython16h

🐍📺 In this video course, you'll learn how class constructors work in Python. You'll also explore Python's instantiation process, which has two main steps: instance creation and instance initialization #python realpython.com/courses/using…

Using Python Class Constructors – Real Python

In this video course, you'll learn how class constructors work in Python. You'll also explore Python's instantiation process, which has two main steps: instance creation and instance initialization.

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Real Python · Oct 23, 2026 · 1:00 AM UTC

@realpython17h

🐍 Deploying a Flask Application Using Heroku (Overview) [Video] #python realpython.com/lessons/deplo…

Deploying a Flask Application Using Heroku (Overview) – Real Python

Deploying a Flask Application Using Heroku. In this course, you’ll create a Python Flask example application and deploy it using Heroku, making it publicly available on the web. Heroku removes much...