emacs for OS X

[Skip Montanaro]

    Wezzy> Download python-mode from python.org:
    Wezzy>  http://www.python.org/emacs/python-mode/python-mode.el

Ancient, ancient, ancient!

Pop up a level to 

    http://www.python.org/emacs/python-mode/

and you'll read:

    The current release of python-mode.el is no longer maintained on this
    website. Check the python-mode project on Sourceforge instead.

The version you referred to (which I don't think is any longer linked to
from the website) is 4.6.  The current version is 4.54.

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