Producing high-quality Python code involves using appropriate tools and consistently applying best practices. High-quality code is functional, readable, maintainable, efficient, and secure. It adheres to established standards and has excellent documentation. You can achieve these qualities by follow...

In this quiz, you’ll test your understanding of the Managing and Measuring Python Code Quality course. By working through this quiz, you’ll revisit what separates high-quality code from code that merely works. You’ll cover how to make code functional, readable, efficient, and reusable, how to pick t...

The GitHub Copilot CLI brings AI-assisted coding into your terminal. Unlike the older gh copilot extension, which only suggests and explains shell commands, Copilot CLI is a standalone agentic app that answers questions, writes and debugs code, and interacts with GitHub.com services through natural-...

In this quiz, you’ll test your understanding of How to Get Started With the GitHub Copilot CLI. By working through this quiz, you’ll revisit how to install and authenticate the CLI, run one-shot and interactive prompts, use slash commands and agent modes, delegate work to subagents, and switch betwe...

Do you feel like your Python skills are atrophying after using LLM coding tools? How do you add the right kind of friction into your coding routine to keep your developer instincts sharp? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects. ...

Most Django apps eventually need to defer slow work outside the request-response cycle. Django Tasks, the new built-in framework in Django 6.0, gives you a standard way to push that work onto a background worker instead of a view function that keeps a user’s browser waiting. Common examples of such ...

In this quiz, you’ll test your understanding of Django Tasks: Exploring the Built-in Tasks Framework. By working through this quiz, you’ll revisit how to define a task with the @task decorator, enqueue it onto a background worker, check its result, and split fast and slow work across named queues. [...

Discover how to use LlamaIndex with practical examples. This framework helps you build retrieval-augmented generation (RAG) apps using Python. LlamaIndex lets you load your data and documents, create and persist searchable indexes, and query an LLM using your data as context. In this course, you’ll ...

In this quiz, you’ll test your understanding of the Using LlamaIndex for RAG in Python course. By working through this quiz, you’ll revisit how RAG retrieves context to ground an LLM’s answers, how to load and index your own data, how to query it through a query engine, and why persisting your index...

Data analysis is a broad term that covers a wide range of techniques for revealing insights and relationships in raw data. Data analysis with Python has become a default workflow in industry, thanks to a mature ecosystem of libraries like pandas, NumPy, Matplotlib, and scikit-learn. Once you’ve anal...

In this quiz, you’ll test your understanding of Using the Python zip() Function for Parallel Iteration. By working through these questions, you’ll revisit how zip() pairs up elements from multiple iterables, how to handle iterables of unequal length, and how to combine zip() with dict() and sorted()...

In this quiz, you’ll test your understanding of Sorting a Python Dictionary: Values, Keys, and More. By working through this quiz, you’ll revisit using sorted() with lambdas and itemgetter() to sort dictionaries by keys, by values, or by nested attributes. You’ll also weigh the trade-offs of choosin...

Context engineering is the practice of curating the content that goes into an AI agent’s context window. In Python projects, that may mean pinning your dependency manager in an instruction file, trimming irrelevant history, delegating heavy tasks to subagents, and more. By the end of this tutorial, ...

In this quiz, you’ll test your understanding of Context Engineering for Python Codebases. By working through this quiz, you’ll revisit the layers of an agent’s context window and the four strategies for managing it: Curate, Distill, Delegate, and Externalize. These ideas apply to any modern AI codin...

When you’re learning Python, the sheer volume of topics to explore can feel overwhelming because there’s so much you could focus on. Should you dive into web frameworks before exploring data science? Is test-driven development something you need right away? And which skills actually matter to employ...

In this quiz, you’ll test your understanding of Develop Data Visualization Interfaces in Python With Dash. By working through this quiz, you’ll revisit how to build a Dash application with a layout, style components with CSS, wire up interactivity using the @app.callback decorator, and deploy your f...

In this quiz, you’ll test your understanding of Building Python Skills for the Job Market. By working through it, you’ll revisit how to choose a developer path, research what employers value, build a skill roadmap with SMART goals, design a weekly practice routine, and prepare for technical and AI-e...

In object-oriented programming (OOP), an interface describes the methods a class must implement to play a specific role. This set of methods expresses the interface contract. Python has no dedicated syntax for interfaces, but it gives you two mechanisms for modeling them: abstract base classes and p...

In this quiz, you’ll test your understanding of Implementing Interfaces in Python: ABCs and Protocols. By working through this quiz, you’ll revisit how to model interfaces with abstract base classes and protocols, how to enforce method contracts, and how duck typing lets unrelated classes work toget...

What's happening at EuroPython 2026? The conference celebrates its 25th anniversary this year in Kraków, Poland. This week on the show, organizers Mia Bajić and Daria Linhart Grudzien join me to discuss this year's conference. [ Improve Your Python With 🐍 Python Tricks 💌 – Get a short & sweet Python...

In this quiz, you’ll test your understanding of Serialize Your Data With Python. By working through this quiz, you’ll revisit how to choose between textual and binary formats, when to use schemas, and how to apply tools like pickle, json, the csv module, Parquet, and Protocol Buffers safely and effe...

AI-powered code editors have moved beyond novelty to become everyday tools for many Python developers. Instead of having to switch between your editor and a separate AI chat, you can use tools like Cursor and Windsurf that bring AI directly into your workflow. As a result, the Cursor vs Windsurf que...

One of the quickest ways to call multiple AI models from a single Python script is to use OpenRouter’s API, which acts as a unified routing layer between your code and multiple AI providers. By the end of this course, you’ll be able to access models from several providers through one unified API. Th...

In this quiz, you’ll test your understanding of Embeddings and Vector Databases With ChromaDB. By working through this quiz, you’ll revisit key concepts like vectors, cosine similarity, word and text embeddings, ChromaDB collections, metadata filtering, and retrieval-augmented generation (RAG). [ Im...

In this quiz, you’ll test your understanding of Accessing Multiple AI Models With the OpenRouter API. By working through this quiz, you’ll revisit how OpenRouter provides a unified routing layer, how to call AI models from a single Python script, how to switch between intelligent routing and a speci...

While the Northern Hemisphere warms up for summer, Python 3.15 went the other way with its beta 1 feature freeze 🥶. Since May 7, the list of what will be included in the next release is final. That list includes a brand-new sentinel built-in that finally standardizes a pattern Python developers have...

How can you easily reduce the size of a Python Docker container? What are the exceptions you should catch in your code? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects. [ Improve Your Python With 🐍 Python Tricks 💌 – Get a short & sweet P...

In this quiz, you’ll test your understanding of How to Read User Input From the Keyboard in Python. By working through this quiz, you’ll revisit the input() function, type conversion, error handling with try and except, the getpass module for hidden input, and the PyInputPlus library for automatic v...

GitHub offers several AI tools under the Copilot umbrella that cover your entire development workflow. Copilot can provide an AI-powered code review shortly after you open a pull request on GitHub. Rather than waiting for a teammate, you can add Copilot as a reviewer to receive context-aware feedbac...

In this quiz, you’ll test your understanding of How to Use GitHub Copilot Code Review in Pull Requests. By working through this quiz, you’ll revisit how to request a review from Copilot on your pull requests, apply or push back on its suggestions, configure automatic reviews, and use custom instruct...