Async Agnostic Decorators, Vector Similarity Search in DuckDB and more

with some more interesting news, articles, packages and projects

Mar 29, 2025

17ᵗʰ Advanced Scientific Programming in Python in Plovdiv, Bulgaria, 21–28 September, 2025 ASPP2025

Articles

How to Use Async Agnostic Decorators in Python

Using a decorator designed for synchronous code on async functions won’t work as expected. That’s where async-agnostic decorators come in handy. In this article, Tanner Young shared how to create them.

# Tanner Young

Vector Similarity Search in DuckDB

If you don’t want to set up a separate database server for vector search, you can use SQLite or DuckDB with vector extension. In this article, Max Gabrielsson explained how to do it using DuckDB.

# Max Gabrielsson

The weird quirk with rounding in Python

Did you know that in Python, round(0.5) gives 0, while round(1.5) gives 2? Sounds odd at first, right? This is actually bankers' rounding (or Dutch rounding), designed for fairness. If you're curious about the reasoning behind it and alternative, check out this article by Tom Nijhof-Verhees.

# Tom Nijhof-Verhees

Python Textual: Build Beautiful UIs in the Terminal

Want to build amazing UIs in the terminal? Textual is one of the best options out there! If you're interested in learning how to use it, check out this fantastic Real Python article by Charles de Villiers.

# Charles de Villiers

Heatmaps for Time Series

Heatmaps are one of the powerful tools for data visualization. Lee Vaughan used measles disease data to create a heatmap using Matplotlib's pcolormesh() function to show the impact of the measles vaccine across different US states over the years.

# Lee Vaughan

Interesting Packages and Projects to Explore

cookiecutter-django - Cookiecutter Django is a framework for jumpstarting production-ready Django projects quickly.

nbgrader - A system for assigning and grading notebooks

JAX - Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more

Perpetual - A self-generalizing gradient boosting machine that doesn't need hyperparameter optimization

tox - A generic virtualenv management and test command line tool

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