Visions – User defined data type systems
Visions is a python library for working with user defined data type systems. Out of the box, it provides type inference and automated data cleaning of sequence data with backend specific implementations for pandas, spark, python, and numpy. We often use it as a first pass cleaning step when working with tabular data and to simplify the backend logic of both pandas-profiling[1] and our tabular data compression library compressio[2]. Because data types are user defined, we can build user customizable libraries based around types without adding code complexity. In the case of compressio that…
Visions – User defined data type systems launched on February 1, 2022 with 45 votes, #915 of 2,645 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 4 years on.
In plain words
Visions is a Python library that enables type inference and automated data cleaning for sequence data across pandas, Spark, Python, and NumPy backends. It uses user-defined data type systems to simplify tabular data processing as an initial cleaning step. The library allows developers to build customizable, type-based tools without increasing code complexity, making it useful for data profiling and compression tasks where users can define custom type-to-algorithm mappings.
written from the facts on this page · September 2026
From the sources
Type System for Data Analysis in Python. Contribute to dylan-profiler/visions development by creating an account on GitHub.
In the maker’s words, at launch
Visions is a python library for working with user defined data type systems. Out of the box, it provides type inference and automated data cleaning of sequence data with backend specific implementations for pandas, spark, python, and numpy. We often use it as a first pass cleaning step when working with tabular data…
Does a similar job
all alternatives →
A Python container for dataclasses with multi-indexing and vector opps2020 · github.com · ▲122A container for dataclasses with multi-indexing and bulk operations. - joshlk/dataclassframe
I implemented a neural network in SQLJul 2026 · github.com · ▲121Two weeks ago I was on my babymoon in Corfu, Greece. While in transit, I was overseeing a GSoC intern submit an important feature to my array database library, Xarray-SQL. He added `to_dataset()`, which completed the roundtrip between thinking of array data in a tabular model simultaneously as gridded rasters (the premise of the project is that every Nd array can be mapped to 2d, where orthogonal dims of the Nd array are just primary keys of a tabular representation). We discussed in chat, now that this feature existed, what demos could we make that would prove this data model works? With…
VisionScript, abstract programming language for computer vision2023 · github.com · ▲93Hello! I'm James and I am working on VisionScript. With VisionScript, I want to empower people -- including everyone without any prior programming experience -- to build cool apps with vision. This weekend, I recorded a demo for VisionScript, in which I made apps that count how many cats are in an image and hides people in a video. Each app was < 10 lines of code. https://vimeo.com/856043804 VisionScript is built for the 10 year old inside of me who would have loved more visual programming languages with which to play. I want to show people the potential of programming and how…
Array – A Better Python List2021 · github.com · ▲87Like a Python list but better. Contribute to Lauriat/funct development by creating an account on GitHub.
Dlt – Python library to automate the creation of datasets2023 · colab.research.google.com · ▲114Hi HN, We're Anna, Adrian, Marcin and Matt, developers of dlt. dlt is an open source library to automatically create datasets out of messy, unstructured data sources. You can use the library to move data from about anywhere into most of well known SQL and vector stores, data lakes, storage buckets, or local engines like DuckDB. It automates many cumbersome data engineering tasks and can by handled by anyone who knows Python. Here’s our Github: https://github.com/dlt-hub/dlt Here’s our Colab demo:…
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲345Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Show HN post ↗ · launch text quoted in part
Launched alongside, February 2022
the whole month →
Sha256 algorithm explained online step by step visually
Life & fun · 2022 · sha256algorithm.com
EdgeDB 1.0▲947Today, after years of research, development, and refinement EdgeDB graduates to a production-ready database. We are very proud to announce EdgeDB 1.0.
Dev tools · 2022 · edgedb.com
