Python 3.x code samples
Book: http://greenteapress.com/wp/think-python-2e/
https://www.udacity.com/course/intro-to-computer-science--cs101
https://www.edx.org/course/introduction-computer-science-mitx-6-00-1x-6#!
https://www.vikingcodeschool.com/prep
FLASK https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world
https://learnpythonthehardway.org/python3
https://www.coursera.org/learn/python
coursera https://www.coursera.org/learn/interactive-python-1
Coursera https://www.coursera.org/learn/interactive-python-2
coursera https://www.coursera.org/specializations/python
Coursea coursework http://www.py4inf.com/
coursera https://www.coursera.org/learn/python
http://cscircles.cemc.uwaterloo.ca/
https://teamtreehouse.com/
https://www.edx.org/course/introduction-computer-science-harvardx-cs50x
http://www.pythonchallenge.com/
udemy https://www.udemy.com
scratch https://scratch.mit.edu/
code combat https://codecombat.com/
https://www.codingame.com/start
code.org https://code.org/
alison.com https://alison.com/courses/Introduction-to-Programming-with-Python
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00-introduction-to-computer-science-and-programming-fall-2008/
https://prod-edx-mktg-edit.edx.org/course/introduction-python-data-science-microsoft-dat208x-0#!
http://anh.cs.luc.edu/python/hands-on/3.1/handsonHtml/index.html
https://wiki.python.org/moin/BeginnersGuide/NonProgrammers
http://www.learnpython.org/
http://www.afterhoursprogramming.com/tutorial/Python/Overview/
http://gettingstartedwithdjango.com/
https://developers.google.com/edu/python/
https://pythonprogramming.net/introduction-to-python-programming/
https://www.vikingcodeschool.com/prep
https://checkio.org/
http://adventofcode.com
http://courseware.cemc.uwaterloo.ca/
Udemy.com Automate The Boring Stuff https://automatetheboringstuff.com/chapter0
Codeacademy https://www.codecademy.com/learn/python
free code camp http://www.freecodecamp.com/
khan Academy https://www.khanacademy.org/