Emacs As Python IDE
Why Use IDE?
laziness…..
Image Credit: https://academichelp.net/
Getting Started
Install Emacs
Emacs Tutorial
Moving in a file.
Moving between files.
Package Management
Built in to emacs24
(require 'package) (package-initialize) M-x package-list-packages
Getting more packages
(setq package-archives '(("gnu" . "http://elpa.gnu.org/packages/") ("marmalade" . "https://marmalade-repo.org/packages/") ("melpa" . "http://melpa.milkbox.net/packages/")))
Starter kits
A better way to get started.
git clone https://github.com/bbatsov/prelude ~/.emacs.d/
git clone https://github.com/purcell/emacs.d ~/.emacs.d/
git clone https://github.com/technomancy/emacs-starter-kit ~/.emacs.d/
Python Mode
Provided by Emacs itself.
M-x python-mode ;; Python-mode
elpy
Best package for python development.
Batteries included.
pip install rope
pip install jedi
pip install flake8
pip install importmagic
M-x package-install RET elpy
(package-initialize)
(elpy-enable)
Error Checking
Warning-as-you-type
(i.e. some errors don't even require a compile cycle)
Docs
Shows function signature
Get docs
C-c C-d ;; elpy-doc
Code Navigation.
Navigate code by treating them as hyperlinks.
M-. ;; elpy-goto-definition M-* ;; pop-tag-mark
Autocompletion
Autocompletion when you can't remember the all names.
Jedi/Rope - Python specific
Company/Auto-complete - General auto complete
Elpy comes with company-mode
M-<n> ;; select nth item
Snippets
Package: yasnippet
Elpy comes with yasnippet
Debugging
Debug using pdb.
import ipdb
ipdb.set_trace()
Test Integration
Configure Your Test Runner.
M-x elpy-set-test-runner C-c C-t ;; runs test/ all tests
Virtual Environment
Elpy comes with pyvenv
M-x pyvenv-workon
M-x pyvenv-activate
M-x pyvenv-deactivate
Web mode
M-x package-install RET web-mode RET
(require 'web-mode) (add-to-list 'auto-mode-alist '("\\.html?\\'" . web-mode)) (setq web-mode-engines-alist '(("django" . "\\.html\\'"))) (setq web-mode-markup-indent-offset 2) (setq web-mode-code-indent-offset 2) (setq web-mode-css-indent-offset 2) (setq web-mode-enable-auto-pairing t) (setq web-mode-enable-auto-expanding t) (setq web-mode-enable-css-colorization t)
Auto opening, Auto completion, Auto expanders
Code folding, Navigation
Snippets - HTML/Django
Context aware processing.
Files/Projects
Explore system all files in system. Explore files related to particular project.
Packages: projectile, dired-plus
C-c p p ;; switch projects C-c p f ;; list project files C-c p g ;; grep project
Source Control Integration
Packages: magit, git-gutter, git-blame
C-x g ;; starts magit buffer
Process
Python process
Terminal
Databases
Useful packages
helm
paredit
ace-jump-mode
multiple-cursors
expand-region
use-package
Beyond IDE
IRC Client.
StackExchange Client.
Read mail, tweets.
Documenting projects.
Todo lists.
Listening music.
Browse web.
Interpret lisp.
News reader.
Terminal multiplexer.
Play games.
Video editor.
Spreadsheet.
Document viewer.
Prepare presentations.