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News & links about Python programming.
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Mastering Python Logging Format: A Complete Guide for Developers

Set up Python logging format strings, custom formatters, and structured JSON output with copy-paste code examples for every major use case.

https://middleware.io/blog/python-logging-format/
I've been teaching intro Python for 3 years i notice the same weaknesses in almost every student. Am i missing something in how I'm explaining it?

https://www.reddit.com/r/learnpython/comments/1tbtrtv/ive_been_teaching_intro_python_for_3_years_i/
How we accelerated transpilation by compiling SQLGlot with mypyc

Fivetran accelerated SQLGlot, a pure Python SQL parser/transpiler, by 5x through compiling 100+ modules into C extensions with mypyc, without rewriting it in Rust. Key optimizations included sentinel tokens, native i64 integers, dispatch tables, and upstream mypyc primitives for string operations, resulting in 3.9 to 5x speedups across the tokenizer, parser, and generator.

https://www.fivetran.com/blog/how-we-accelerated-transpilation-by-compiling-sqlglot-with-mypyc
ProgramBench

Can Language Models Rebuild Programs From Scratch? Given only a compiled binary and its documentation, AI agents must architect and implement a complete codebase that reproduces the original program's behavior.

https://programbench.com/
Family Orienting Python Frozenset Dependent Type Theory

The post models dependent type theory in plain Python by treating types as finite “families,” or dictionaries from contexts to sets, rather than as standalone bare values. The key idea is that full judgments like Γ |- A should be interpreted as mappings, which makes contexts, weakening, terms, Sigma/Pi types, and identity types easier to represent uniformly.

https://www.philipzucker.com/dtt_python_family/
Introducing Retrace: Record Production Python. Debug It Backwards.

Retrace introduces deterministic record-replay debugging for Python, allowing production executions to be recorded with very low overhead and replayed locally in VS Code with reverse debugging support. Instead of relying on logs or reproducing failures, it records the boundary between application code and nondeterministic systems like APIs, databases, threads, and file I/O, enabling deve...

https://retracesoftware.com/blog/introducing-retrace/
The Simplest MCP Example Possible in Python

The post shows the simplest Python example of MCP (Model Context Protocol) for connecting a local LLM like Llama 3.2 to tools. It uses fastmcp and ollama packages with two scripts: mcpserver.py for time/date tools and ollamaclient.py to run the chat loop.

https://inventwithpython.com/blog/basic-mcp-python-example.html
Labb - UI components for Django

This video looks at labb - a UI component library for Django apps that builds on top of TailwindCSS, DaisyUI, django-cotton and Alpine.js. This library has over 70 components that can be dropped into Django projects, and makes it easy to add custom themes, for example using DaisyUI Theme Generator.

https://www.youtube.com/watch?v=ZZd7cvbJ-1w
DRY Often Makes Your Code Worse

A DRY refactor can make code worse when it removes duplication by hiding different behaviors behind flags and shared abstractions. Better refactoring focuses on separating responsibilities and making behavior clear, not just making the code look smaller.

https://www.youtube.com/watch?v=GmlZBdKhl9Y
In-Kernel Broadcast Optimization: Co-Designing Kernels for RecSys Inference

In-Kernel Broadcast Optimization (IKBO) eliminates redundant user-embedding replication by fusing broadcast logic directly into interaction kernels, significantly reducing memory bandwidth and compute waste. This co-design approach delivers up to a two-thirds reduction in latency across Meta's recommendation stack, optimized for high-performance hardware like NVIDIA H100 and Meta’s MTIA.

https://pytorch.org/blog/in-kernel-broadcast-optimization-co-designing-kernels-for-recsys-inference/