altair

Vega-Altair: A declarative statistical visualization library for Python.

altair Permissive license Copyright (c) 2015-2025, Vega-Altair Developers All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following… (full text in the JSON record) Active ★ 10,451 v6.2.2 released 2026-06-23

Install

altair on PyPI

pip

pip install altair

uv

uv add altair

poetry

poetry add altair

Package facts

License	Copyright (c) 2015-2025, Vega-Altair Developers All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following… (full text in the JSON record) (permissive)
Python support	supports the current Python release (>=3.10)
Install friction	low — pure-Python wheel
Runtime dependencies	5 — jinja2, jsonschema, narwhals, packaging, typing-extensions
Maintenance	actively maintained — 51 days since the last release
Last repo commit	2026-08-12
First released	2016-07-09
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: altair-6.2.2-py3-none-any.whl

Keywords: declarative, interactive, json, statistics, vega-lite, visualization

Development Status :: 5 - Production/StableEnvironment :: ConsoleIntended Audience :: Science/ResearchLicense :: OSI Approved :: BSD LicenseNatural Language :: EnglishProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Typing :: Typed

About altair

from the package's own PyPI description — quoted content, verbatim

Vega-Altair <a href="https://altair-viz.github.io/"><img align="right" src="https://altair-viz.github.io/_static/altair-logo-light.png" height="50"></img></a>

github actions (image) typedlib_mypy (image) JOSS Paper (image) PyPI - Downloads (image)

Vega-Altair is a declarative statistical visualization library for Python. With Vega-Altair, you can spend more time understanding your data and its meaning. Vega-Altair's API is simple, friendly and consistent and built on top of the powerful Vega-Lite JSON specification. This elegant simplicity produces beautiful and effective visualizations with a minimal amount of code.

*Vega-Altair was originally developed by Jake Vanderplas and Brian Granger in close...

Read as markdown · JSON record · Source repository · Docs

AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Altair is a declarative statistical visualization library that lets you build interactive charts using a simple Python API backed by the Vega-Lite JSON specification.

Low friction install with five lightweight runtime dependencies (jinja2, jsonschema, narwhals, packaging, typing-extensions). Active maintenance with a recent release 51 days ago.

BSD license (permissive) permits commercial and private use with minimal restrictions—only requiring copyright notice and disclaimer in distributions.

Usage

pip install altair

import altair as alt
from altair.datasets import data

cars = data.cars()
alt.Chart(cars).mark_point().encode(
    x='Horsepower',
    y='Miles_per_Gallon',
    color='Origin',
)

Requires Python 3.10 or later; visualization rendering requires a Jupyter environment or compatible notebook viewer.

Verdict: Altair is a mature, well-maintained visualization library with active status, no known vulnerabilities, and permissive licensing. Its low install friction and support for Python 3.10–3.14 make it accessible for interactive charts in notebooks and web contexts.

Needs verification

Whether narwhals dependency adds significant overhead or is optional for core functionality
Performance characteristics with large datasets (>100k rows)
Extent of interactive feature support beyond the documented selection examples

declarative visualization pythoninteractive charts vega-litestatistical plotting librarygrammar of graphics pythondata visualization jupytervega-lite wrapper pythoninteractive data exploration