realpython.com / .realpython-com / Page 5

We ran GPT-6 Astra through Real Python's vibe check for new AI models: five fixed prompts, one shot each. The first one is always the same line, "Write a Python turtle program that draws a python reading a book." Here's what GPT-6 Astra drew: That's ...

In this quiz, you'll test your understanding of Common Python Data Structures (Guide). By working through this quiz, you'll revisit the abstract data types that ship with Python's standard library and how they map onto Python's naming scheme. You'll ...

How do you plan for the performance of your Python applications? What does a performance budget entail, and where should you spend your resources? This week on the show, we speak with Den Odell about his new book "Fast by Default: Practical ...

We ran Claude Fable 5.1 through Real Python's vibe check for new AI models: five fixed prompts, one shot each. The first one is always the same line, "Write a Python turtle program that draws a python reading a book." Here's what Claude Fable 5.1 ...

In this quiz, you'll test your understanding of Python AI: How to Build a Neural Network & Make Predictions. By working through this quiz, you'll revisit how a neural network takes an input vector, transforms it through layers, and adjusts its ...

Python 3.15 makes UTF-8 the default text encoding. A plain open("notes.txt") call now decodes the same way on every platform, including Windows. Earlier Python versions picked an encoding from your locale, so on Windows the same code that worked on ...

In this quiz, you'll test your understanding of Python 3.15 Preview: UTF-8 by Default. By working through this quiz, you'll revisit where Python's old default text encoding came from, which operations rely on that default, how to find code that leans ...

In this quiz, you'll test your understanding of Python Project Structure: How to Choose the Right Layout. By working through this quiz, you'll revisit how to tell scripts, applications, and libraries apart, weigh the flat layout against the src/

Integrating local large language models (LLMs) into your Python projects with Ollama is a great way to improve privacy, reduce costs, and build offline-capable AI-powered apps. Ollama is an open-source platform that makes it straightforward to run ...

Do you have a phone that you can unlock with your face? Have you ever wondered how that works? Have you ever wanted to build your own face recognizer? With Python, some data, and a few helper packages, you can create your very own. In this project,