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A language server for Jedi!

Project description

jedi-language-server

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A Language Server for the latest version(s) of Jedi. If using Neovim/Vim, we recommend using with coc-jedi.

Note: this tool is actively used by its primary author. He's happy to review pull requests / respond to issues you may discover.

Installation

From your command line (bash / zsh), run:

pip install -U jedi-language-server

-U ensures that you're pulling the latest version from pypi.

Alternatively, consider using pipx to keep jedi-language-server isolated from your other Python dependencies. Don't worry, jedi is smart enough to figure out which Virtual environment you're currently using!

Capabilities

jedi-language-server aims to support all of Jedi's capabilities and expose them through the Language Server Protocol. It currently supports the following Language Server capabilities:

Language Features

Text Synchronization (for diagnostics)

Editor Setup

The following instructions show how to use jedi-language-server with your development tooling. The instructions assume you have already installed jedi-language-server.

Vim / Neovim

Users may choose 1 of the following options:

Note: this list is non-exhaustive. If you know of a great choice not included in this list, please submit a PR!

Emacs

Users may choose 1 of the following options:

Note: this list is non-exhaustive. If you know of a great choice not included in this list, please submit a PR!

Command line (bash / zsh)

At your terminal prompt:

jedi-language-server

jedi-language-server currently works only over IO. This may change in the future.

Configuration

We recommend using coc-jedi and following its configuration instructions.

If you are configuring manually, jedi-language-server supports the following initializationOptions:

...
  "initializationOptions": {
    "markupKindPreferred": null,
    "jediSettings": {
      "autoImportModules": [],
      "caseInsensitiveCompletion": true
    },
    "completion": {
      "disableSnippets": false,
      "resolveEagerly": false
    },
    "diagnostics": {
      "enable": true,
      "didOpen": true,
      "didChange": true,
      "didSave": true
    },
    "workspace": {
      "extraPaths": [],
      "maxSymbols": 20
    }
  }
...

See coc-jedi's configuration instructions for an explanation of the above configurations.

Additional Diagnostics

jedi-langugage-server provides diagnostics about syntax errors, powered by Jedi. If you would like additional diagnostics, we suggest using the powerful diagnostic-language-server.

Code Formatting

Again, we recommend that you use diagnostic-language-server. It also supports code formatting.

Local Development

To build and run this project from source:

Dependencies

Install the following tools manually:

Recommended

Get source code

Fork this repository and clone the fork to your development machine:

git clone https://github.com/<YOUR-USERNAME>/jedi-language-server
cd jedi-language-server

Set up development environment

make setup

Run tests

make test

Inspiration

Palantir's python-language-server inspired this project. Unlike python-language-server, jedi-language-server:

  • Uses pygls instead of creating its own low-level Language Server Protocol bindings
  • Supports one powerful 3rd party library: Jedi. By only supporting Jedi, we can focus on supporting all Jedi features without exposing ourselves to too many broken 3rd party dependencies (I'm looking at you, rope).
  • Is supremely simple because of its scope constraints. Leave complexity to the Jedi master. If the force is strong with you, please submit a PR!

Written by

Samuel Roeca samuel.roeca@gmail.com

Project details


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