Python Page Ranker

d3Python Search Spider, Page Ranker, and Visualizer
http://www.py4inf.com/code/pagerank

D3 algorithm
https://github.com/d3/d3/wiki/Force-Layout

web for spidering:
http://www.cybercomputing.co.uk

used in:
Capstone: Retrieving, Processing, and Visualizing Data with Python
University of Michigan. June 2016
https://www.coursera.org/learn/python-capstone

http://www.dr-chuck.com/csev-blog/2015/09/teaching-four-free-python-courses-on-coursera