Emacs as Python IDE for Emacs >= 24.3

init.el

;; Emacs as Python IDE for Emacs >= 24.3
;; Copy this file in your .emacs.d to setup emacs as a Python IDE.
;; If you want to integrate this into your existing configuration,
;; of course, you should put the seperate parts of this code in the
;; appropriate files.

;; Credits, documentation and further reading:
;; Jorgen Schaefers elpy - https://github.com/jorgenschaefer/elpy
;; elpy doc - http://elpy.readthedocs.org/en/latest/introduction.html
;; Yusuke Tsutsumis blog : http://y.tsutsumi.io/emacs-from-scratch-part-2-package-management.html

;; Package management
;; Require package manager (build in manager is called package)
(require 'package)
(require 'cl)

;; Add package sources: Jorgen Schaefers archive for elpy
(add-to-list 'package-archives
             '("elpy" . "https://jorgenschaefer.github.io/packages/"))

;; Initalize package system
(package-initialize)

;; List of emacs packages we want to be installed
;; Required system packages:
;; - elpy: rope jedi flake8 importmagic autopep8 yapf
;; install system packages e.g. via apt-get for ubuntu or via pip)
(defvar required-packages
  '(
    elpy ; Python editing and IDE features for emacs.
  ) "List of required emacs packages." )

;; method to check if all required packages (the ones in required-packages variable) are installed
(defun packages-installed-p ()
  (cl-every 'package-installed-p required-packages))

;; if there are packages that are not yet installed, check one by one and install the missing ones.
(unless (packages-installed-p)
  ; check for new packages (package versions)
  (message "%s" "Refreshing package database...")
  (package-refresh-contents)
  (message "%s" " done.")
  ; install the missing packages
  (dolist (p required-packages)
    (when (not (package-installed-p p))
      (package-install p))))

; require and enable installed packages
(elpy-enable)