# python-lsp/python-lsp-server

Fork of the python-language-server project, maintained by the Spyder IDE team and the community

Repository: https://github.com/python-lsp/python-lsp-server
Canonical: https://ross.abutalabs.com/products/python-lsp-server
Language: Python
License: MIT
License Family: permissive
Last push: 2026-07-27T18:27:08+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 48, longevity 100
- inputs: {"age_days": 2019, "days_push": 37, "days_rel": 270, "gap_med": 49, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2592, forks 247 (observed 2026-08-28T04:07:02.997593+00:00)

## What it is
A Python 3.9+ implementation of the Language Server Protocol, maintained by the Spyder IDE team as a community fork of python-language-server. It exposes the `pylsp` command and provides completions, definitions, hover, references, linting, and formatting via pluggable providers like Jedi, Rope, Pyflakes, and YAPF.

## Use cases
- add python autocomplete to my editor
- language server for vim or neovim python development
- get linting and code formatting in my ide via lsp
- run go to definition and find references for python code
- set up pylsp for emacs or vscode
- python code intelligence server for any lsp-compatible editor

## When to choose
- you need an editor-agnostic Python language server with pluggable linters and formatters
- you use Spyder, Vim, Emacs, or another LSP-capable editor for Python
- you want a community-maintained fork of the original python-language-server

## When to avoid
- you prefer Microsoft's Pylance or the newer basedpyright for Python language features
- you need a language server for a language other than Python
- you want an all-in-one IDE rather than a protocol server

## Facets
- artifact type: service
- maturity: active
- function: linter, formatter, developer-tools, editor
- domain: developer-tools, programming-languages, text-editors
- platform: python, cross-platform, editor-plugin
- tags: language-server-protocol, lsp, pylsp, code-completion, python-tooling

## Member repositories
- python-lsp/python-lsp-server (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:02.997593+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 2026-08-30T02:22:17.849993+00:00, confidence not recorded.
  - readme: https://github.com/python-lsp/python-lsp-server (fetched 2026-08-28T04:07:02.997593+00:00, sha ddf4f54aeeb4)
  - registry_pypi: https://pypi.org/pypi/python-lsp-server/json (fetched 2026-08-29T10:04:31.989621+00:00, sha ac3dbe149109)
- Data as of 2026-08-30T08:39:29.467469+00:00.