http://www.greenteapress.com/thinkpython/thinkpython.html

http://openbookproject.net//thinkCSpy/
How to Think Like a Computer Scientist — How to Think Like a Computer Scientist: Learning with Python v2nd Edition documentation
http://diveintopython.org/
Dive Into Python
http://diveintopython.org/toc/index.html
Dive Into Python