This is a sequel to the emacs and python using Rope post. Here I use the excellent Jedi library instead of rope.

• You can remove the pymacs and ropemacs references from your .emacs
• Install the required Python tools.
  • easy_install jedi
  • easy_install epc
• Use M-x package-list-packages to install Jedi.el
• Add the following to your .emacs:

  ;;Jedi
  (autoload 'jedi:setup "jedi" nil t)
  (setq jedi:setup-keys t)
  
  (add-hook 'python-mode-hook
  (lambda ()
  (jedi:setup)
  ))

• Have a look here to see what you can do now.