Step 1：
https://pypi.python.org/pypi/setuptools#unix-based-systems-including-mac-os-x
This is not available on OSX 10.9.  Fix this first.
 
Step 2:
https://github.com/jcrocholl/pep8
Clone as ZIP, and run
python setup.py install
 
Step 3:
https://pypi.python.org/pypi/autopep8/
python setup.py install
 
 
Enjoy it!