* [Hacking Secret Cyphers with Python](http://inventwithpython.com/hacking/chapters/) - Al Sweigart
* [Hacking Secret Cyphers with Python](http://inventwithpython.com/hacking/chapters/) - Al Sweigart
* [Hitchiker's Guide to Python!](http://docs.python-guide.org/en/latest/)
* [Hitchiker's Guide to Python!](http://docs.python-guide.org/en/latest/)
* [How to Think Like a Computer Scientist: Learning with Python](http://www.greenteapress.com/thinkpython/thinkCSpy/) - Allen B. Downey, Jeff Elkner and Chris Meyers
* [How to Think Like a Computer Scientist: Learning with Python](http://www.greenteapress.com/thinkpython/thinkCSpy/) - Allen B. Downey, Jeff Elkner and Chris Meyers
* [How to Think Like a Computer Scientist: Learning with Python, Interactive Edition](http://interactivepython.org/courselib/static/thinkcspy/index.html)
* [How to Think Like a Computer Scientist: Learning with Python, Interactive Edition](http://interactivepython.org/courselib/static/thinkcspy/index.html)
* [Introduction to Programming Using Python](http://python-ebook.blogspot.com) - Cody Jackson
* [Introduction to Programming Using Python](http://python-ebook.blogspot.com) - Cody Jackson
* [Introduction to python](http://kracekumar.com/post/71171551647/introduction-to-python) - Kracekumar
* [Invent Your Own Computer Games With Python](http://inventwithpython.com/chapters/) - Al Sweigart
* [Invent Your Own Computer Games With Python](http://inventwithpython.com/chapters/) - Al Sweigart
* [Learn Python The Hard Way](http://learnpythonthehardway.org/book/)
* [Learn Python The Hard Way](http://learnpythonthehardway.org/book/)
* [Lectures on scientific computing with python](https://github.com/jrjohansson/scientific-python-lectures) - J.R. Johansson
* [Lectures on scientific computing with python](https://github.com/jrjohansson/scientific-python-lectures) - J.R. Johansson
@ -1291,36 +1296,30 @@ See also [TeX](#tex)
* [Modeling Creativity: Case Studies in Python](http://www.clips.ua.ac.be/sites/default/files/modeling-creativity.pdf) - Tom D. De Smedt
* [Modeling Creativity: Case Studies in Python](http://www.clips.ua.ac.be/sites/default/files/modeling-creativity.pdf) - Tom D. De Smedt
* [Natural Language Processing with Python](http://www.nltk.org/book)
* [Natural Language Processing with Python](http://www.nltk.org/book)
* [Porting to Python 3: An In-Depth Guide](http://python3porting.com/)
* [Porting to Python 3: An In-Depth Guide](http://python3porting.com/)
* [Problem Solving with Algorithms and Data Structures](http://interactivepython.org/courselib/static/pythonds/index.html)
* [Program Arcade Games With Python And Pygame](http://programarcadegames.com/)
* [Program Arcade Games With Python And Pygame](http://programarcadegames.com/)
* [Test-Driven Web Development with Python](http://chimera.labs.oreilly.com/books/1234000000754/index.html)
* [Python Standard Library](http://effbot.org/librarybook/) - Fredrik Lundh
* [Building Skills in Python](http://www.itmaybeahack.com/book/python-2.6/latex/BuildingSkillsinPython.pdf)
* [Building Skills in Object-Oriented Design (Python)](http://www.itmaybeahack.com/book/oodesign-python-2.1/latex/BuildingSkillsinOODesign.pdf)
* [Text Processing in Python](http://gnosis.cx/TPiP/) - David Mertz
* [Text Processing in Python](http://gnosis.cx/TPiP/) - David Mertz
* [Welcome to Problem Solving with Algorithms and Data Structures](http://interactivepython.org/runestone/static/pythonds/index.html) - Brad Miller and David Ranum
* [Welcome to Problem Solving with Algorithms and Data Structures](http://interactivepython.org/runestone/static/pythonds/index.html) - Brad Miller and David Ranum
* [Python in Hydrology](http://www.greenteapress.com/pythonhydro/pythonhydro.html) - Sat Kumar Tomer
* [Introduction to python](http://kracekumar.com/post/71171551647/introduction-to-python) - Kracekumar
* [Web2py: Complete Reference Manual, 6th Edition (pre-release)](http://web2py.com/book) - HTML
* [Web2py: Complete Reference Manual, 6th Edition (pre-release)](http://web2py.com/book) - HTML
* [Web2py: Complete Reference Manual, 6th Edition (pre-release)](https://dl.dropbox.com/u/18065445/web2py/web2py_manual_5th.pdf) - PDF
* [Web2py: Complete Reference Manual, 6th Edition (pre-release)](https://dl.dropbox.com/u/18065445/web2py/web2py_manual_5th.pdf) - PDF