(add-hook 'python-mode-hook '(lambda()
                               (setq indent-tabs-mode nil)
                               (setq indent-level 4)
                               (setq python-indent 4)
                               (setq tab-width 4)))

;; from http://pedrokroger.net/2010/07/configuring-emacs-as-a-python-ide-2/
(defun annotate-pdb ()
  "Highlight break point lines."
  (interactive)
  (highlight-lines-matching-regexp "import pdb")
  (highlight-lines-matching-regexp "pdb.set_trace()"))
(add-hook 'python-mode-hook 'annotate-pdb)

;; from http://pedrokroger.net/2010/07/configuring-emacs-as-a-python-ide-2/
(defun python-add-breakpoint ()
  "Add a break point and highlight it."
  (interactive)
  (newline-and-indent)
  (insert "import pdb; pdb.set_trace()"))