本文将介绍，在Emacs中，通过各种扩展，打造强大的Python IDE环境，包括Snippet工具，智能提示，自动补全，重构工具，调试以及GAE的调试，等等。以下各工具的安装前提是你对Emacs的配置文件有一定的了解，所有相关的el文件都必须放在load_path能够加载的地方。
1. YASnippet
snippet工具，可自定义一些模板，必不可少的好东西！看了下面这个很酷的演示动画就明白了：
http://yasnippet.googlecode.com/files/yasnippet.avi
安装方法：
(require 'yasnippet)
(yas/initialize)
(yas/load-directory "~/.emacs.d/plugins/yasnippet-0.6.1c/snippets")
(yas/initialize)
(yas/load-directory "~/.emacs.d/plugins/yasnippet-0.6.1c/snippets")
2. AutoComplete
自动完成工具，会像VS里一样，弹出一个列表框让你去选择。
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安装方法：
(require 'auto-complete)
(require 'auto-complete-config)
(global-auto-complete-mode t)
(setq-default ac-sources '(ac-source-words-in-same-mode-buffers))
(add-hook 'emacs-lisp-mode-hook (lambda () (add-to-list 'ac-sources 'ac-source-symbols)))
(add-hook 'auto-complete-mode-hook (lambda () (add-to-list 'ac-sources 'ac-source-filename)))
(set-face-background 'ac-candidate-face "lightgray")
(set-face-underline 'ac-candidate-face "darkgray")
(set-face-background 'ac-selection-face "steelblue") ;;; 设置比上面截图中更好看的背景颜色
(define-key ac-completing-map "\M-n" 'ac-next) ;;; 列表中通过按M-n来向下移动
(define-key ac-completing-map "\M-p" 'ac-previous)
(setq ac-auto-start 2)
(setq ac-dwim t)
(define-key ac-mode-map (kbd "M-TAB") 'auto-complete)
(require 'auto-complete-config)
(global-auto-complete-mode t)
(setq-default ac-sources '(ac-source-words-in-same-mode-buffers))
(add-hook 'emacs-lisp-mode-hook (lambda () (add-to-list 'ac-sources 'ac-source-symbols)))
(add-hook 'auto-complete-mode-hook (lambda () (add-to-list 'ac-sources 'ac-source-filename)))
(set-face-background 'ac-candidate-face "lightgray")
(set-face-underline 'ac-candidate-face "darkgray")
(set-face-background 'ac-selection-face "steelblue") ;;; 设置比上面截图中更好看的背景颜色
(define-key ac-completing-map "\M-n" 'ac-next) ;;; 列表中通过按M-n来向下移动
(define-key ac-completing-map "\M-p" 'ac-previous)
(setq ac-auto-start 2)
(setq ac-dwim t)
(define-key ac-mode-map (kbd "M-TAB") 'auto-complete)