jedi-language-server
A language server for Jedi!
Decision gist · record as of 2026-08-14
Yes, if you use an LSP-compatible editor and want Python completion and navigation without heavyweight tooling. The package is actively maintained, has no known vulnerabilities, installs cleanly, and supports current Python versions (3.10–3.14). The MIT license is unencumbered. Caveat: the maintainers flag this as maintenance mode and recommend Zuban for new projects, so evaluate whether you need long-term feature development or if stable, mature completion is sufficient.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; editor must support Language Server Protocol; some frameworks (coc-jedi, vscode-python) manage installation automatically.
- Low friction installation as a wheel; active maintenance with a recent release 75 days ago and last commit on 2026-06-23.
- Requires Python 3.10 or later.
License · maintenance · safety
MIT (permissive) — MIT license permits unrestricted use, modification, and distribution in both open-source and commercial contexts with minimal obligations.
last release 2026-05-31 (75 days) · last repo commit 2026-06-23 · 730 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 88,510 downloads/mo, #13,722 on PyPI
Alternatives
Verify before relying
pip install jedi-language-server
# Then configure in your editor (e.g., Neovim via nvim-lspconfig,
# VS Code by setting python.languageServer to 'Jedi',
# or Emacs via lsp-jedi/eglot)- Performance characteristics when handling large codebases or complex type hierarchies compared to alternatives
- Completeness of Jedi's type inference for modern Python typing constructs (PEP 604 unions, TypeVar bounds, etc.)
- Whether the maintenance-mode status affects long-term bug fixes or feature parity with active LSP servers
What it is and what it does
Jedi Language Server bridges Jedi, a mature Python static analysis library, to any editor or IDE that speaks the Language Server Protocol. It runs as a separate process and communicates with your editor over LSP, providing code completion, go-to-definition, hover documentation, refactoring operations (extract variable/function), and optional diagnostics. The server understands your project's virtual environment and can analyze both regular Python files and Jupyter notebooks.
The package is designed for developers who want IDE-like features in editors like Vim, Neovim, Emacs, or VS Code without embedding a full IDE. It handles configuration through LSP initialization options, allowing fine-tuning of completion behavior, diagnostic triggers, and symbol search. The maintainers note the project is in maintenance mode and suggest new users consider Zuban, a Rust-based alternative, though jedi-language-server remains actively maintained.
Use it for
- Enable code completion and go-to-definition in Neovim or Vim using nvim-lspconfig or vim-lsp without installing a heavyweight IDE
- Provide Python language features in Emacs through eglot or lsp-jedi for a lightweight development environment
- Set up Python LSP support in VS Code by switching the language server from Pylance to Jedi for a lighter footprint
- Analyze and provide completions for Jupyter notebooks in compatible editors that support LSP and notebook protocols
- Customize completion filtering and diagnostic behavior per project via LSP initialization options
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you use an LSP-compatible editor and want Python completion and navigation without heavyweight tooling.
The package is actively maintained, has no known vulnerabilities, installs cleanly, and supports current Python versions (3.10–3.14). The MIT license is unencumbered. Caveat: the maintainers flag this as maintenance mode and recommend Zuban for new projects, so evaluate whether you need long-term feature development or if stable, mature completion is sufficient.
Install
jedi-language-server on PyPI
Before you install
Low friction installation as a wheel; active maintenance with a recent release 75 days ago and last commit on 2026-06-23. Requires Python 3.10 or later. Six runtime dependencies are all stable, well-maintained packages.
Requires Python 3.10 or later; editor must support Language Server Protocol; some frameworks (coc-jedi, vscode-python) manage installation automatically.
License in practice
MIT license permits unrestricted use, modification, and distribution in both open-source and commercial contexts with minimal obligations.
Quickstart
pip install jedi-language-server
# Then configure in your editor (e.g., Neovim via nvim-lspconfig,
# VS Code by setting python.languageServer to 'Jedi',
# or Emacs via lsp-jedi/eglot)Verify before relying
- Performance characteristics when handling large codebases or complex type hierarchies compared to alternatives
- Completeness of Jedi's type inference for modern Python typing constructs (PEP 604 unions, TypeVar bounds, etc.)
- Whether the maintenance-mode status affects long-term bug fixes or feature parity with active LSP servers
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 6 packagescattrsdocstring-to-markdownjedilsprotocolpyglstyping-extensions |
| Maintenance | Actively maintained 75 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 88,510 / month, #13,722 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersOperating System :: OS IndependentProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Software Development :: Code GeneratorsTopic :: Software Development :: Libraries :: Python ModulesTopic :: Text Editors :: Integrated Development Environments (IDE)Topic :: UtilitiesTyping :: Typed |
Evidence: jedi_language_server-0.47.0-py3-none-any.whl
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See also jedi · lsprotocol · pygls · zuban · jupyterlab-lsp · python-language-server · ruff-lsp · esbonio · pyrefly · rope