Hacker News with Generative AI: Python

Loading Pydantic models from JSON without running out of memory (pythonspeed.com)
You have a large JSON file, and you want to load the data into Pydantic. Unfortunately, this uses a lot of memory, to the point where large JSON files are very difficult to read. What to do?

Python, Data Processing, Memory Management, Optimization, Pydantic

103 points by itamarst 17 hours ago | 36 comments

DumPy: NumPy except it's OK if you're dum (dynomight.substack.com)

Python, NumPy, Data Science, Programming, Humor

7 points by crescit_eundo 19 hours ago | 1 comments

DumPy: NumPy except it's OK if you're dum (dynomight.net)
I don’t like NumPy

Python, Libraries, Data Science, Humor

17 points by mbforbes 19 hours ago | 3 comments

Free-Threaded Python Library Compatibility Checker (ft-checker.com)
Free-threaded Python Library Compatibility Checker

Python, Libraries, Compatibility, Tools

32 points by lifthrasiir 22 hours ago | 7 comments

Recent Disruptive Changes from Setuptools (lwn.net)
In late March, version 78.0.1 of Setuptools — an important Python packaging tool — was released. It was scarcely half an hour before the first bug report came in, and it quickly became clear that the change was far more disruptive than anticipated.

Python, Software, Open Source, Bug Reports, Packaging

6 points by todsacerdoti 1 day ago | 0 comments

I made a code security auditor for all you dumb vibe coders – thank me later (github.com/anshulyadav1976)
VulnViper is an intelligent security auditing tool designed to help developers identify and understand potential vulnerabilities in their Python codebases.

Python, Security, Code Auditing, Tools

5 points by anshulyadav1976 2 days ago | 0 comments

Python Tooling at Scale: LlamaIndex’s Monorepo Overhaul (llamaindex.ai)
When we talk about LlamaIndex, we’re actually referring to an ecosystem consisting of more than 650 Python packages, mostly Integrations and Packs. All these packages share a single GitHub repository, what engineers fondly call a “monorepo”. In this article, we’re going to introduce LlamaDev, our new tool for managing monorepos at scale, and explain the challenges we ran into with existing tooling to get us to this point.

Python, Software Engineering, Open Source, AI

33 points by cheesyFish 2 days ago | 10 comments

Modern Python Boilerplate – good package basic structure (ycombinator.com)
TL;DR: Python Boilerplate repo for fast package building with all best practices

Python, Software Development, Best Practices, Open Source

8 points by lambda-science 2 days ago | 0 comments

Show HN: Juvio – UV Kernel for Jupyter (github.com/OKUA1)
Juvio: reproducible, dependency-aware, and Git-friendly Jupyter Notebooks.

Jupyter Notebooks, Open Source, Python, Data Science, Reproducibility

113 points by okost1 3 days ago | 26 comments

Python Design Patterns (2020) (python-patterns.guide)

Python, Design Patterns, Programming

13 points by Tomte 3 days ago | 0 comments

Bayesian Modeling and Computation in Python (2021) (bayesiancomputationbook.com)

Bayesian Statistics, Python, Machine Learning, Statistics, Books

8 points by Tomte 3 days ago | 0 comments

Python for Mathematics (vknight.org)

Python, Mathematics, Programming

5 points by sohkamyung 4 days ago | 0 comments

Create a Cursor/Windsurf Clone in Python from Scratch (1-Hour Challenge) [video] (youtube.com)

Python, Programming, Games, Tutorials, Video

4 points by marufm 4 days ago | 1 comments

Show HN: Python Simulator of David Deutsch’s “Constructor Theory of Time” (github.com/gvelesandro)
A Python implementation of David Deutsch’s Constructor Theory framework, exposing key concepts—from simple Tasks and branching substrates to quantum-gravity and electromagnetism—entirely in code. Includes a “universal constructor” that can bootstrap itself from a list of Tasks, demonstrating self-replication and the power of Constructor Theory.

Physics, Python, Software, Simulation, Theory

84 points by SandroG 5 days ago | 11 comments

Show HN: Buckaroo – Data table UI for Notebooks (github.com/paddymul)
Buckaroo is a modern data table for Jupyter that expedites the most common exploratory data analysis tasks.

Data Visualization, Jupyter Notebooks, Data Analysis, Python, Open Source

105 points by paddy_m 5 days ago | 9 comments

Show HN: Train and deploy your own open-source humanoid in Python (github.com/kscalelabs)
Train and deploy your own humanoid robot controller in 700 lines of Python

Robotics, Open Source, Python, Machine Learning

30 points by codekansas 5 days ago | 6 comments

Microsoft winnows: Layoffs hit software engineers hard (theregister.com)
Microsoft's recent round of layoffs appears to have fallen largely on software developers, including several prominent Python developers and a veteran TypeScript developer.

Microsoft, Layoffs, Software Engineering, Python, TypeScript

28 points by gitremote 5 days ago | 6 comments

Show HN: A MCP server to evaluate Python code in WASM VM using RustPython (github.com/tuananh)

Python, Rust, WebAssembly, Open Source, Programming Languages

41 points by tuananh 6 days ago | 13 comments

Community Stewardship of Faster CPython (python.org)

Python, Programming Languages, Open Source, Community, Performance

5 points by bratao 6 days ago | 0 comments

Pyrefly: A new type checker and IDE experience for Python (engineering.fb.com)
Today we are announcing an alpha version of Pyrefly, an open source Python type checker and IDE extension crafted in Rust.

Python, Type Checking, IDE, Open Source, Rust

235 points by homarp 6 days ago | 163 comments

Show HN: Fahmatrix – A Lightweight, Pandas-Like DataFrame Library for Java (github.com/moustafa-nasr)
Fahmatrix is a lightweight, modern Java library for working with tabular data, inspired by Python's Pandas and rooted in the idea of making data understanding (fahm) easy on the JVM.

Java, Data Analysis, Libraries, Python, Pandas

46 points by mousomashakel 6 days ago | 13 comments

Show HN: SQL-tString a t-string SQL builder in Python (github.com/pgjones)
SQL-tString allows for t-string based construction of sql queries without allowing for SQL injection.

Python, SQL, Security, Open Source, Libraries

85 points by pgjones 7 days ago | 35 comments

The first year of free-threaded Python (quansight.org)
Last week, the CPython developers rolled out CPython 3.14.0b1. This week, PyCon 2025 kicks off in Pittsburgh, PA. Both events mark a significant milestone for the effort to ship and stabilize free-threaded Python.

Python, Programming Languages, Software Development, Open Source

290 points by rbanffy 7 days ago | 289 comments

Microsoft support for "Faster CPython" project cancelled (reddit.com)
In the face of Microsoft's 3% across-the-board layoffs, they terminated their "Faster CPython" project contributors.

Python, Open Source, Programming, Layoffs

13 points by rurban 7 days ago | 1 comments

"Goodwill", key member of the SoCal Python Community has passed away (socalpython.org)
In early May of 2025, the long-standing SoCal Python organizer Michael Ryabushkin—known to many as goodwill—passed away.

Python, Community, Obituary, Software Development, California

47 points by rdegges 7 days ago | 8 comments

Pyrefly:A fast type checker/IDE extension for Python written in Rust (engineering.fb.com)
Today we are announcing an alpha version of Pyrefly, an open source Python type checker and IDE extension crafted in Rust.

Python, Type Checking, IDE, Rust, Open Source

13 points by team_pyrefly 8 days ago | 1 comments

Show HN: Cogitator – A Python Toolkit for Chain-of-Thought Prompting (github.com/habedi)
Cogitator is a Python toolkit for experimenting and working with chain-of-thought (CoT) prompting methods in large language models (LLMs).

Python, Generative AI, Machine Learning, Tools

53 points by habedi0 8 days ago | 8 comments

I don't like NumPy (dynomight.net)
They say you can’t truly hate someone unless you loved them first. I don’t know if that’s true as a general principle, but it certainly describes my relationship with NumPy.

Python, Programming Languages, Data Science

488 points by MinimalAction 8 days ago | 206 comments

Microsoft fires Faster CPython developers (bsky.app)

Microsoft, Python, Software Development, Layoffs

16 points by subset 8 days ago | 1 comments

Project Verona: Fearless Concurrency for Python (microsoft.github.io)
As part of Project Verona, we have been developing a new ownership model for Python, called Lungfish.

Python, Concurrency, Programming Languages, Software Development

165 points by ptx 8 days ago | 144 comments