Elpy is an Emacs package to bring powerful Python editing to Emacs. It combines and configures a number of other packages, both written in Emacs Lisp as well as Python.

Elpy is fully documented at readthedocs.io:

https://elpy.readthedocs.io/en/latest/index.html

First, install the required Python packages::

# Completion and code navigation
pip install jedi
# Code checks
pip install flake8
# Automatic formatting (PEP8, Yapf or Black)
pip install autopep8
pip install yapf
pip install black

One-line install: pip install jedi flake8 autopep8 black yapf

(use-package elpy
  :ensure t
  :init
  (elpy-enable))

Or if you want to defer Elpy loading:

(use-package elpy
  :ensure t
  :defer t
  :init
  (advice-add 'python-mode :before 'elpy-enable))

Evaluate this in your *scratch* buffer:

(require 'package)
(add-to-list 'package-archives
             '("melpa-stable" . "https://stable.melpa.org/packages/"))

Then run M-x package-refresh-contents to load the contents of the new repository, and M-x package-install RET elpy RET to install elpy.

Elpy can then be activated by running M-x elpy-enable. This can be made automatic by adding the following to your .emacs:

(elpy-enable)

Users of Debian ≥10 or Ubuntu ≥18.10 can skip the instructions above this line and may simply install Elpy and all of its recommended dependencies with the following command::

sudo apt install elpa-elpy

Elpy can then be activated by running M-x elpy-enable. This can be made automatic by adding the following to your .emacs:

(elpy-enable)

For questions regarding Elpy, do not hesitate to open an issue on github or visit us on IRC, channel #emacs-elpy on irc.freenode.net.

This project is free software: You can redistribute it and/or modify it under the terms of the GNU General Public License, either version 3 of the License, or (at your option) any later version.

If you would like to support this work, you can become a patreon:

https://www.patreon.com/jorgenschaefer

Please note that this is completely voluntary, and does not make you more important than others when it comes to issues, feature requests or anything. I appreciate donations, but do not feel compelled to spend money, and do not feel bad if you don't.