# microsoft/pylance-release

Documentation and issues for Pylance

Repository: https://github.com/microsoft/pylance-release
Canonical: https://ross.abutalabs.com/products/pylance-release
Language: Python
License: CC-BY-4.0
License Family: other
Topics: python, language-server, language-server-protocol, code-analysis
Last push: 2026-08-26T05:12:51+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 94, longevity 100
- inputs: {"age_days": 2295, "days_push": 7, "days_rel": 43, "gap_med": 17.5, "n_releases_24m": 27}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2115, forks 1110 (observed 2026-08-28T04:06:15.939575+00:00)

## What it is
Pylance is Microsoft's fast, feature-rich Python language server extension for Visual Studio Code, providing IntelliSense, auto-imports, diagnostics, and type checking. This repository hosts its documentation and issue tracker; the core typing engine is the open-source Pyright project, while Pylance itself is proprietary.

## Use cases
- get better python autocomplete in vscode
- fix python import suggestions in vs code
- type check python code as i type
- speed up python language server in large projects
- enable semantic highlighting for python
- use python intellisense in jupyter notebooks
- install type stubs for my python dependencies

## When to choose
- you use Visual Studio Code for Python development and want the default, best-integrated language server
- you need fast completions, auto-imports, and as-you-type diagnostics for Python 3
- you want optional static type checking powered by the Pyright engine
- you work with Jupyter notebooks or multi-root workspaces in VS Code

## When to avoid
- you need a fully open-source language server - use Pyright or python-lsp-server instead
- you use an editor other than VS Code that cannot run VS Code extensions
- you require modifying the language server's source code, since Pylance is closed-source

## Facets
- artifact type: plugin
- maturity: active
- function: editor, developer-tools, type-system, linter
- domain: developer-tools, programming-languages, text-editors
- platform: editor-plugin, cross-platform
- tags: language-server-protocol, python-language-server, vscode-extension, intellisense, type-checking, pyright, code-completion, proprietary-core

## Member repositories
- microsoft/pylance-release (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:15.939575+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:53:22.113933+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/pylance-release (fetched 2026-08-28T04:06:15.939575+00:00, sha 53a2dae2456f)
- Data as of 2026-08-30T08:39:29.467469+00:00.