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Calling Lean Functions As Python Functions
Philip Zucker introduces leancall, a Python library designed to bridge the gap between Lean 4 and Python by allowing Lean functions to be called as native Python functions. He demonstrates its utility through practical examples like balancing a Cartpole in a reinforcement learning environment and building a ray tracer, highlighting Lean's performance benefits while leveraging Python's va...
Rewriting pycparser with the help of an LLM
Eli describes how he used an LLM coding agent (Codex) to help rewrite the popular Python C parser pycparser, replacing its old PLY based parser with a hand-written recursive descent parser that passes the full test suite and is easier to maintain. He found the experience efficient and insightful, noting the agent did most of the heavy work in far less time than doing it manually while hi...
Making Pyrefly Diagnostics 18x Faster
Learn about the recent performance improvements made to Pyrefly's language server capabilities.
memory_graph
Teaching tool and debugging aid in context of references, mutable data types, and shallow and deep copy.
Stop Building Ugly APIs: Use the Fluent Interface Pattern
The video walks through refactoring a small Python animation API from a clunky configuration style into a fluent interface that reads like a story using method chaining and domain specific methods. It also explains what the fluent interface pattern is, how it differs from the builder pattern, where it already appears in Python, and when it is appropriate or inappropriate to use.
💖 Most Popular in the Last Two Weeks
So... Postgres is now basically a search engine? (And it's free)
This video demonstrates how to turn PostgreSQL into a powerful, personalized search engine using the open-source PG text search extension (based on the BM25 algorithm). It provides a technical walkthrough on using Claude Code and UV to build a Python-based system for scraping web content, tracking links, and managing a private knowledge base.
copier-astral
Fast Python project template with Astral's toolchain (uv, ruff, ty) + pytest, MkDocs, Typer, GitHub Actions, Docker
Python as you've never seen it before
The "LLM-as-Analyst" Trap: A Technical Deep-Dive into Agentic Data Systems
Why the simplest agentic pattern is the most dangerous for factual data operations.
Monty: A minimal, secure Python interpreter written in Rust for use by AI
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Project by Ruslan Keba. Since 2012. Powered by Python. Made in 🇺🇦Ukraine.