JupyterLab + Neovim

• A JupyterLab extension.
• A Neovim plugin

How does it work?

This project includes two parts: a JupyterLab extension and a Neovim plugin

• The JupyterLab extension exposes functions of Jupyter lab, and provides a remote procedure call(RPC) service
• The Neovim plugin calls the RPC service when it receives events from Neovim via autocmd

proxy	direct

This project provides two working modes for different network environments. If the browser where your jupyiter lab is located cannot directly access nvim, you must use proxy mode; If you need to collaborate and use the same Jupyter with others, you must use direct mode

• proxy mode: Jupyterlab server proxies the RPC service as a TCP server which Neovims plugin connects to
• direct mode: Neovim plugin accesses these RPC service directly

Ultimately, Neopyter can control Juppyter lab. Neopyter can implement abilities like jupynium.nvim.

Screenshots

Completion	Cell Magic	Line Magic

Requirements

• 📔JupyterLab >= 4.0.0
• ✌️ Neovim nightly
  • 👍nvim-lua/plenary.nvim
  • 🤏AbaoFromCUG/websocket.nvim (optional for mode="direct")

Installation

JupyterLab Extension

To install the jupyterlab extension, execute:

pip install neopyter

Configure JupyterLab in side panel

• mode: refer to the previous introduction about mode
• IP: if mode=proxy, set to the IP of the host where jupyter is located. If proxy=direct, set to the IP of the host where neovim is located
• port: idle port

Neovim plugin

With 💤lazy.nvim:

{
    "SUSTech-data/neopyter",
    opts = {
        -- auto define autocmd
        auto_attach = true,
        -- auto connect rpc service
        auto_connect = true,
        mode="direct",
        -- same with JupyterLab settings
        remote_address = "127.0.0.1:9001",
        file_pattern = { "*.ju.*" },
        on_attach = function(bufnr)
        end,

        highlight = {
            enable = true,
            shortsighted = true,
        }
    },
}

Integration

nvim-cmp

• nvim-cmp
• lspkind.nvim

local lspkind = require("lspkind")
local cmp = require("cmp")

cmp.setup({

    sources = cmp.config.sources({
        -- addition source
        { name = "neopyter" },
    }),
    formatting = {
        format = lspkind.cmp_format({
            mode = "symbol_text",
            maxwidth = 50,
            ellipsis_char = "...",
            menu = {
                neopyter = "[Neopyter]",
            },
            symbol_map = {
                -- specific complete item kind icon
                ["Magic"] = "🪄",
                ["Path"] = "📁",
                ["Dict key"] = "🔑",
                ["Instance"]="󱃻",
                ["Statement"]="󱇯",
            },
        }),
    },
)}

    -- menu item highlight
vim.api.nvim_set_hl(0, "CmpItemKindMagic", { bg = "NONE", fg = "#D4D434" })
vim.api.nvim_set_hl(0, "CmpItemKindPath", { link = "CmpItemKindFolder" })
vim.api.nvim_set_hl(0, "CmpItemKindDictkey", { link = "CmpItemKindKeyword" })
vim.api.nvim_set_hl(0, "CmpItemKindInstance", { link = "CmpItemKindVariable" })
vim.api.nvim_set_hl(0, "CmpItemKindStatement", { link = "CmpItemKindVariable" })

More information, see nvim-cmp wiki

nvim-treesitter-textobjects

Supported captures in textobjects query group

• @cell
  • @cell.code
  • @cell.magic
  • @cell.markdown
  • @cell.raw
  • @cell.special
• @cellseparator
  • @cellseparator.code
  • @cellseparator.magic
  • @cellseparator.markdown
  • @cellseparator.raw
  • @cellseparator.special
• @cellbody
  • @cellbody.code
  • @cellbody.magic
  • @cellbody.markdown
  • @cellbody.raw
  • @cellbody.special
• @cellcontent
  • @cellcontent.code
  • @cellcontent.magic
  • @cellcontent.markdown
  • @cellcontent.raw
  • @cellcontent.special
• @cellborder
  • @cellborder.start
    • @cellborder.start.markdown
    • @cellborder.start.raw
    • @cellborder.start.special
  • @cellborder.end
    • @cellborder.end.markdown
    • @cellborder.end.raw
    • @cellborder.end.special
• @linemagic

require'nvim-treesitter.configs'.setup {
    textobjects = {
        move = {
            enable = true,
            goto_next_start = {
                ["]j"] = "@cellseparator",
                ["]c"] = "@cellcontent",
            },
            goto_previous_start = {
                ["[j"] = "@cellseparator",
                ["[c"] = "@cellcontent",
            },
        },
    },
}

Quick Start

• Open JupyterLab jupyter lab, there is a sidebar named Neopyter, which display neopyter ip+port
• Open a *.ju.py file in neovim
• Now you can type # %% in Neovim to create a code cell.
  • You'll see everything you type below that will be synchronised in the browser

Available Vim Commands

• Server

  • :Neopyter connect [remote 'ip:port'], e.g. :Neopyter command 127.0.0.1:9001, connect Jupyter lab manually
  • :Neopyter disconnect
  • :Neopyter status alias to :checkhealth neopyter currently

• Sync

  • :Neopyter sync current, make sync current *.ju.* file with the currently open *.ipynb
  • :Neopyter sync [filename], e.g. :Neopyter sync main.ipynb

• Run

  • :Neopyter run current, same as Run>Run Selected Cell and Do not Advance menu in Jupyter lab
  • :Neopyter run allAbove, same as Run>Run All Above Selected Cell menu in Jupyter lab
  • :Neopyter run allBelow, same as Run>Run Selected Cell and All Below menu in Jupyter lab
  • :Neopyter run all, same as Run>Run All Cells menu in Jupyter lab

• Kernel

  • :Neopyter kernel restart, same as Kernel>Restart Kernel menu in Jupyter lab
  • :Neopyter kernel restartRunAll, same as Kernel>Restart Kernel and Run All Cells menu in Jupyter lab

• Jupyter

  • :Neopyter execute [command_id] [args], execute Jupyter lab's command directly, e.g. :Neopyter execute notebook:export-to-format {"format":"html"}

API

Neopyter provides rich lua APIs

• Jupyter Lab

  • Neopyter execute ... <-> require("neopyter.jupyter").jupyterlab:execute_command(...)
  • All APIs see :lua =require("neopyter.jupyter.jupyterlab").__injected_methods

• Notebook

  • :Neopyter run current <-> require("neopyter.jupyter").notebook:run_selected_cell()
  • :Neopyter run allAbove <-> require("neopyter.jupyter").notebook:run_all_above()
  • :Neopyter run allBelow <-> require("neopyter.jupyter").notebook:run_all_below()
  • All APIs see :lua =require("neopyter.jupyter.notebook").__injected_methods

Features

• Neovim
  • Full sync
  • Partial sync
  • Scroll view automatically
  • Activate cell automatically
  • Save notebook automatically
  • Completion
    • Magic completion item
    • Path completion item
    • Disable others?
  • Tree-sitter
    • Highlight
      • Separator+non-code
      • Shortsighted
    • Textobjects
    • Fold
  • Kernel manage
    • Restart kernel
    • Restart kernel and run all
  • Run cell
    • Run selected cell
    • Run all above selected cell
    • Run selected cell and all below
    • Run all cell
  • Sync
    • Set synchronized .ipynb manually
  • Notebook manager
    • Open corresponding notebook if exists
    • Sync with untitled notebook default
    • Close notebook when buffer unload
• Jupyter Lab
  • Settings
    • Tcp server host/port settings
  • Status Sidebar
    • Display ip:port
    • Display client info
• Performance
  • Rewrite RpcClient, support async rpc request vim.rpcrequest and vim.rpcnotify
• Document
  • API Document

Acknowledges

• jupynium.nvim: Selenium-automated Jupyter Notebook that is synchronised with NeoVim in real-time.