#python

#python

ctx = canvas.getContext("2d") URL = "/blog/floodfill-algorithm-in-python/_python.txt" async def load_bitmap(url: str) -> list[list[int]]: # Fetch the text file from the URL response = await fetch(url) text = await response.text() bitmap: list[list[int]] = [] for line in text.splitlines(): line = line.strip() if not line: continue row = [int(ch) for ch in line if ch in "01"] if row: bitmap.append(row) return bitmap

I'm excited to announce that me and Audrey will be visiting Japan from November 12 to November 24, 2025! This will be our first time in Japan, and we can't wait to explore Tokyo. Yes, we'll be in Tokyo for most of it, near the Shinjuku area, working from coffee shops, meeting some colleagues, and exploring the city during our free time.

Excel gives you a huge toolbox of functions ( SUM, IF, VLOOKUP, INDEX, etc.), but eventually, you hit a wall. Maybe you want to do something more custom than Excel allows. Maybe your file slows down with too many rows. Or maybe there simply isn't a built-in function for exactly what you need. Python solves this by letting you build your own custom functions. That's why it's so powerful for data analysis-it's Excel without limits.

These terms included affirming the statement that we 'do not, and will not during the term of this financial assistance award, operate any programs that advance or promote DEI [diversity, equity, and inclusion], or discriminatory equity ideology in violation of Federal anti-discrimination laws,' Crary noted.

Here's the task. I want to create a class to represent a track and field event held in a competition. This entry allows you to enter the raw results as reported by the officials-the athlete's bib number and the time they clocked in a race. It then computes the event's full results. There's more we could add to make this class more complete. But I won't. You can create a list of athletes that are competing in the track and field meeting:

How well do you know the different areas where Python shines? In this quiz, you'll revisit web apps and APIs, GUI apps, CLI tools, machine learning, and more. You'll also check what Python isn't suited for and which alternatives work better. Get ready to explore the wide scope of what you can do with Python.

If you spend long enough in the programming world, you'll come across the term singleton at some point. And if you hadn't seen this term yet, well, now you have! In Python, you don't need singleton classes. Almost never. But creating one is a great exercise in understanding how Python creates objects. And discussing alternatives to a singleton class helps you explore other aspects of Python.

What's changed about learning Python over the last few years? What new techniques and updated advice should beginners have as they start their journey? This week on the show, Stephen Gruppetta and Martin Breuss return to discuss beginning to learn Python. We share techniques for finding motivation, building projects, and learning the fundamentals. We provide advice on installing Python and not obsessing over finding the perfect editor. We also examine incorporating LLMs into learning to code and practicing asking good questions.

Let's say we have some text that was retrieved from a database, and the original text came from a form submission in a web browser. Web browsers often represent line breaks as a carriage return character, followed by a line feed character: That's what we see in our text as well: \r followed by \n. This is often called CRLF (carriage return and line feed) whereas \n is called LF (line feed).

>>> from pathlib import Path >>> [x.name for x in Path('.').iterdir()] ['avocado.jpg', 'kiwifruit.jpg', 'lemon.jpg', 'apple.jpg', 'strawberry.jpg', 'rename-images.py', 'orange.jpg']

This quiz helps you practice sorting dictionaries by keys, values, and custom rules in modern Python. You'll revisit how insertion order works, when to use different views, and how to rebuild sorted dictionaries. You'll also learn best practices for sorting dictionaries efficiently. For a complete overview, check out Sorting Dictionaries: Keys, Values, and More. The quiz contains 11 questions and there is no time limit. You'll get 1 point for each correct answer.

At the end of August, Python: The Documentary premiered on YouTube, where you can watch it for free. It's an 84-minute film tracing Python's journey from Amsterdam side project to the world's most popular programming language: Produced by CultRepo (formerly Honeypot) and directed by Ida Bechtle, the documentary explores Python's evolution and the community that shaped it. It features Guido van Rossum and key contributors like Mariatta and recent Real Python Podcast guest, Travis Oliphant. The documentary also highlights the important role of PyLadies and addresses controversial topics including the Python 2 to 3 transition.

When writing tests in pytest, often there's a need to set environment variables for your tests. Instead of modifying `os.environ` directly, which can lead to side effects and make tests harder to manage, here's how to do it with the [pytest-env](https://pypi.org/project/pytest-env/) package. First, install the package. ```sh pip install pytest-env # classic but works great uv add pytest-env # if you're one of us cool kids using uv uv add pytest-env --group test # if you use a specific test group of dependencies ```

Ready to level up your Python code optimization skills? In this quiz, you'll revisit key concepts about profiling, benchmarking, and diagnosing performance bottlenecks. You'll practice with tools like cProfile and timeit, and see how deterministic and statistical profilers differ.

Here's how [he demonstrated](https://adamj.eu/tech/2025/07/30/python-check-package-version-importlib-metadata-version/) I should be doing it instead. ```toml # pyproject.toml [project] name = "air" version = "0.25.0" # This is the source of truth for the version number ```