Python IDE using Eglot?

Anyone know of a modern tutorial for beginners teaching how to setup Emacs as a Python IDE, [much like this one](https://realpython.com/emacs-the-best-python-editor/), using Eglot instead of Elpy?

Do you use `use-package`? and what version of Emacs do you have?

Yes, I'm using use-package for loading hcl-mode and trying new things like corfu. I'm using emacs 27.2, but I can install emacs 28.1 if needed.

Emacs `28.1` has a lot of cool stuff (See /u/mickeyp's [post here](https://www.masteringemacs.org/article/whats-new-in-emacs-28-1) about it). So if you have the opportunity, I think it'd be great to have. Also, how do you manage your Python environments? This is important to know which packages could help you.

I'm learning python currently, and at this point I can only program simple scripts for system administration. Never got to use venv. I'm trying to get emacs to behave like vscode (intellisense auto completion and language diagnostic).

Alright, I'll show you something you can use.

Ok OP, I've created (again) a Python setup with Emacs. This should provide a proper Python setup hopefully. [See the setup here](https://gist.github.com/Nathan-Furnal/b327f14e861f009c014af36c1790ec49). If you have any question, you can ask them here, I've added lots of comments for clarity. My [own config](https://github.com/Nathan-Furnal/dotemacs) does not use `eglot` but `lsp-mode` (use the one you prefer, eglot is a good choice nonetheless). You can pick stuff you like from there as well.

THANKS A LOT!!! I'm installing emacs 28.1 right now to try this!

No problem! There are some things that might now work (I'm thinking about the fonts that I marked as optional) but you can always get rid of that.

I use `eglot` with `pyright` and it works very well. I lean on `pyvenv` to activate whatever environment I'd like to use for a given project. Running `M-x eglot` automatically finds the `pyright-langserver` executable.

I installed pyright ... `sudo npm install -g pyright` and It seams to be working fine. I'm getting this warning, though: `#[eglot] (warning) Server tried to register unsupported capability \workspace/didChangeWorkspaceFolders'` Maybe I need a project.el hook somewhere? I'll try to debug this tomorrow.

You don't actually need to install pyright from npm. You can install straight from eglot. For the project you need to have a configuration file, otherwise it won't know what the workspace is or where the root of the project is.

What does your config look like for this setup?

(use-package pyvenv :ensure t :init (setenv "WORKON_HOME" "~/.pyenv/versions")) (use-package eglot :ensure t :commands eglot :config (add-to-list 'eglot-server-programs `(python-mode . ,(eglot-alternatives '("pylsp" "jedi-language-server" ("pyright-langserver" "--stdio"))))) (setq eglot-autoshutdown t)) I use `M-x pyvenv-workon` to select a virtual env and then `M-x eglot`

Thanks for your init.el. I have my own that is quite developed, but I've never really bothered to put together a decent setup for Python. I'm using emacs v26.1; I also don't use use-package. However, when I drop that init.el into a fresh .emacs.d, I get startup errors. The first time it goes through an elpa-download cycle, but after that, starting emacs just generates an error saying that use-package is not found (despite being in the elpa directory). Elsewhere on stackoverflow, I found this startup sequence that works for use-package: `;; This is the package system for Emacs. We have to load it to install \`use-package'.(require 'package)(add-to-list 'package-archives'("melpa" . "[https://melpa.org/packages/](https://melpa.org/packages/)") t)(package-initialize);; Bootstrap 'use-package'(eval-after-load 'gnutls'(add-to-list 'gnutls-trustfiles "/etc/ssl/cert.pem"))(unless (package-installed-p 'use-package)(package-refresh-contents)(package-install 'use-package))(eval-when-compile(require 'use-package))(require 'bind-key)(setq use-package-always-ensure t)\` After that, I'm getting errors as soon as I try to open a python file, with it complaining: `?\205\0\307\310\311 \")\207" [#<buffer download_weight.py> (#0) eglot--managed-mode remove-hook post-command-hook nil buffer-live-p apply eglot--connect eglot--guess-contact] 4]): (error "None of ’pylsp, pyls, pyright-langserver, jedi-language-server’ are valid executables")` How do I install pyright? Uncommenting the lsp-pyright section doesn't work, and I don't see pyright as an apt package, nor does the pyright github page talk about installation. Do I just clone the repo, and build/install it myself? If I just uncomment the lsp-pyright section (and comment out eglot), I get a blue message in the minibuffer that says: `Unable to find installed server supporting this file. The following servers could be installed automatically:` with nothing listed after. EDIT: Okay, apparently pyright is distributed via snap: `sudo snap install pyright --classic`

When you install `lsp-pyright` with `MELPA` it should download on its own with `npm` (a package manager for Javascript and Typescript).

I tried that, both with M-x packages-list-packages and using the (package-use) block in your setup. Neither actually installed the tool. EDIT: By the way, once I installed with snap, it all works very well. Much nicer than the rather dodgy jedi-based scheme I had before.

Also, I think there's an error in your init. This line: `:hook (python-mode-hook . blacken-mode))` should be: `:hook (python-mode . blacken-mode))`

You should use `python-mode` in your configuration! Mine uses `python-mode-hook` because I disabled the automatic `-hook` insertion at the end.

Good to know =)

>For the project you need to have a configuration file, otherwise it won't know what the workspace is or where the root of the project is. what is the format for the config file?

Usually LSP will expect a `.json` file for the config. You'll have to read the docs for pyright.