python-language-server
Python Language Server for the Language Server Protocol
Decision gist · record as of 2026-08-14
Yes, if you are building or configuring an LSP-compatible editor or IDE and need Python language support. The package is actively maintained, has low install friction, and integrates cleanly with standard Python tooling. However, verify current Python version compatibility before use, as the latest release is from 2020-12-11 and Python 2 support is obsolete. Not suitable for direct command-line use—it requires an LSP client.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Intended for integration with an LSP client (editor or IDE), not standalone use.
- Low friction installation with a pure-Python wheel distribution.
- Actively maintained with recent commits; 7 runtime dependencies are all lightweight and widely available.
License · maintenance · safety
(unclear) — License treatment is unclear in the metadata, though the description states the project is made available under the MIT License. Verify the actual license terms before use in proprietary or restricted contexts.
last release 2020-12-11 (2072 days) · last repo commit 2026-07-06 · 2,696 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 90,148 downloads/mo, #13,615 on PyPI
Alternatives
Verify before relying
pip install python-language-server
import jedi
# Jedi provides completions, definitions, hover, references, signature help, and symbols- Current Python version compatibility beyond the stated 2.7 and 3.5+ (Python 2 is EOL; actual modern support unclear)
- Whether the package is actively maintained for new Python versions given the latest release was 2020-12-11
- Performance characteristics with large codebases or complex projects
- How optional providers (Rope, Pyflakes, McCabe, pycodestyle, pydocstyle, autopep8, YAPF) affect functionality when not installed
What it is and what it does
Python Language Server is an implementation of the Language Server Protocol for Python, designed to integrate with editors and IDEs to provide real-time code intelligence. It uses Jedi as its core engine to deliver completions, definitions, hover information, references, signature help, and symbol navigation. The package also supports optional linting and formatting providers that can be installed as extras to extend functionality.
The server is configured through standard Python tool configuration files and allows per-workspace overrides. It is primarily intended for use by LSP clients (such as VS Code extensions or other editors) rather than as a standalone tool. The package has 7 core runtime dependencies and supports a plugin architecture for third-party extensions.
Use it for
- Integrate Python code intelligence into VS Code or other LSP-compatible editors via the Language Server Protocol
- Provide code completion and navigation for Python projects in custom editor implementations or language-agnostic IDEs
- Enable linting and style checking across a team by centralizing Python analysis through a single server instance
- Add Python code formatting and refactoring capabilities to editors that support LSP
- Extend editor functionality with optional providers via third-party plugins
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are building or configuring an LSP-compatible editor or IDE and need Python language support.
The package is actively maintained, has low install friction, and integrates cleanly with standard Python tooling. However, verify current Python version compatibility before use, as the latest release is from 2020-12-11 and Python 2 support is obsolete. Not suitable for direct command-line use—it requires an LSP client.
Install
python-language-server on PyPI
Before you install
Low friction installation with a pure-Python wheel distribution. Actively maintained with recent commits; 7 runtime dependencies are all lightweight and widely available. Optional providers can be installed via extras syntax.
Intended for integration with an LSP client (editor or IDE), not standalone use.
License in practice
License treatment is unclear in the metadata, though the description states the project is made available under the MIT License. Verify the actual license terms before use in proprietary or restricted contexts.
Quickstart
pip install python-language-server
import jedi
# Jedi provides completions, definitions, hover, references, signature help, and symbolsVerify before relying
- Current Python version compatibility beyond the stated 2.7 and 3.5+ (Python 2 is EOL; actual modern support unclear)
- Whether the package is actively maintained for new Python versions given the latest release was 2020-12-11
- Performance characteristics with large codebases or complex projects
- How optional providers (Rope, Pyflakes, McCabe, pycodestyle, pydocstyle, autopep8, YAPF) affect functionality when not installed
Package facts
| License | Not declared unclear |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 7 packagesjedipython-jsonrpc-serverpluggyujsonfutureconfigparserbackports.functools-lru-cache |
| Maintenance | Actively maintained 2,072 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 90,148 / month, #13,615 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
Evidence: python_language_server-0.36.2-py2.py3-none-any.whl
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See also python-lsp-server · jedi-language-server · jedi · leanclient · zuban · jupyterlab-lsp · python-lsp-ruff · wemake-python-styleguide · rope · pysen