fstrings.wtf - Python F-String Quizfstrings.wtf How good is your knowledge of Python f-strings? (Questions reflect behavior as of Python 3.13) Start Quiz
Reflections on 2 years of CPython’s JIT Compiler: The good, the bad, the ugly
Reflections on 2 years of CPython’s JIT Compiler: The good, the bad, the ugly 5 July 2025 This blog post includes my honest opinions on the CPython JIT. What I think we did well, what I think we could have done better. I’ll also do some brief qualititative analysis. I’ve been working on CPython’s JIT compiler since before the very start. I don’t know how long that is at this point … 2.5, maybe alm
Pythonのスタブライブラリを生成して、型ヒントのないライブラリも快適で堅牢に利用する - エムスリーテックブログ
AI・機械学習チームブログリレー13日目の記事を三浦 (@mamo3gr) がお送りします。 Pythonで型ヒントを補足するためのサードパーティのスタブライブラリにコントリビュートしました。 それを通して入門したスタブファイルの作り方を紹介します。 便利なPythonの型ヒント 型ヒントを補助するスタブライブラリ スタブファイルの作り方入門 stubgenで下地をつくる pathlib,importlib,inspectを組み合わせたモジュール・クラスの列挙と書き換え __init__ とフィールドの追加 その他、便利そうなツール 実際どれくらい便利になるか Before After まとめ We are hiring !! エンジニア採用ページはこちら カジュアル面談もお気軽にどうぞ インターンも常時募集しています 便利なPythonの型ヒント Pythonで型ヒント、付けてますよね？
Fun with uv and PEP 723
Fun with uv and PEP 723 June 24, 2025 For the longest time, I have been frustrated with Python because I couldn’t use it for one-off scripts. I had to first ensure it was running in an environment where it could find the right Python version and the dependencies installed. That is now a thing of the past. uv¶ If you are not a Pythonista (or one possibly living under a rock), uv is an extremely fas
How fast can the RPython GC allocate?
While working on a paper about allocation profiling in VMProf I got curious about how quickly the RPython GC can allocate an object. I wrote a small RPython benchmark program to get an idea of the order of magnitude. The basic idea is to just allocate an instance in a tight loop: class A(object): pass def run(loops): # preliminary idea, see below for i in range(loops): a = A() a.i = i The RPython
The fastest way to detect a vowel in a string
Austin Z. Henley Associate Teaching Professor Carnegie Mellon University The fastest way to detect a vowel in a string 6/13/2025 See the discussion of this post on Hacker News, Lobste.rs, and Reddit. I was nerd-sniped recently: What is the best way to detect if a string has a vowel in it? This is trivial, right? But as I started getting into it, I realized there is much more to this. I challenged
GitHub - livingbio/typed-ffmpeg: Modern Python FFmpeg wrappers offer comprehensive support for complex filters, complete with detailed typing and documentation.
Zero Dependencies: Built purely with the Python standard library, ensuring maximum compatibility and security. User-Friendly: Simplifies the construction of filter graphs with an intuitive Pythonic interface. Comprehensive FFmpeg Filter Support: Out-of-the-box support for most FFmpeg filters, with IDE auto-completion. Integrated Documentation: In-line docstrings provide immediate reference for fil
Writing your own CUPS printer driver in 100 lines of Python - pretix – behind the scenes - Behind the scenes of pretix, your friendly open source ticketing system from next door. Might contain traces of technology and business.
In version 1.8 of pretix, we introduced shipping management as a new feature for the pretix Hosted and Enterprise editions. With this plug-in, you can choose not to deliver your tickets to your visitors as a downloadable file, but to send them via snail mail instead. Of course, you can just download those tickets as regular-sized PDF files, print them out and ship them, but the feature is usually
Pyrefly: A Static Type Checker for Python | Pyrefly
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Template strings, also known as t-strings, have been officially accepted as a feature in Python 3.14, which will ship in late 2025. 🎉 I'm excited; t-strings open the door to safer more flexible string processing in Python. What's the big idea with t-strings? Since they were introduced in Python 3.6, f-strings have become a very popular way to format strings. They are concise, readable, and powerf
Deciphering Glyph :: Stop Writing `__init__` Methods
The History Before dataclasses were added to Python in version 3.7 — in June of 2018 — the __init__ special method had an important use. If you had a class representing a data structure — for example a 2DCoordinate, with x and y attributes — you would want to be able to construct it as 2DCoordinate(x=1, y=2), which would require you to add an __init__ method with x and y parameters. The other opti
Python Coding Best Practices for Researchers
Skip to the content. 2025/03/06に公開 Set up virtual environments Management tools How to use uv (a simple introduction) Manage Python versions Manage Python package dependencies Project code structure Keep readable Follow coding regulations Type hinting ArrayLike Objects 3rd party tools Static type checking install usage Formatter and Linter install usage Pre-commit file checking install usage Keep
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GitHub - asottile/dict-unpacking-at-home: can we have dict unpacking in python?
330× faster: Four different ways to speed up your code
Pyrefly vs. ty: Comparing Python’s Two New Rust-Based Type Checkers
DumPy: NumPy except it’s OK if you’re dum
GitHub - EvanZhouDev/polycompiler: Merge Python and JS code into one file that can be run in both languages.
GitHub - astral-sh/ty: An extremely fast Python type checker and language server, written in Rust.
A Rust API Inspired by Python, Powered by Serde
GitHub - feynmanix/pipask: Safer python package installs with audit and consent 𝘣𝘦𝘧𝘰𝘳𝘦 install
