All documentation is viewable online at:

https://github.com/pgbovine/OnlinePythonTutor/tree/master/v3/docs

---

Online Python Tutor version 3 - Released on September 18 2012 to

153,000+ people on Google+:

https://plus.google.com/+ResearchatGoogle/posts/cseo9qi7LWq

"Release" announcement from the Research @ Google G+ account:

'''

Online Python Tutor: Web-Based Program Visualization for CS Education

As part of his CS education work at Google, +Philip Guo has been

developing an open-source educational tool called Online Python Tutor

(http://www.pythontutor.com). This tool enables teachers and students

to write Python programs directly in the web browser and then

single-step forwards and backwards to visualize what the computer is

doing as it executes those programs.

Program visualization for CS education is nothing new -- researchers

have been developing these sorts of tools for decades. However, most

of these tools never reach far beyond the confines of the researchers'

home universities due to the difficulty of installing and configuring

the visualization software. What makes Online Python Tutor unique and

effective is that it's the first known tool to adapt time-tested ideas

from the research literature (e.g., rendering of box-and-pointer

diagrams) for a web-based environment. Now anyone with a modern

browser can create, explore, and share their program visualizations by

simply visiting a web URL.

This ease of access has been a major contributor to adoption: So far,

over 100,000 people have used Online Python Tutor to understand and

debug their programs, often as a supplement to learning from

textbooks, lecture notes, and online programming tutorials. In

addition, instructors in over a dozen universities such as MIT, UC

Berkeley, and the University of Washington have used it for teaching

introductory computer science courses.

But this is just the beginning. Philip and his colleagues are now

building an online authoring environment so that, within the next few

months, teachers and students will be able to save their code snippets

and add annotations, discussion threads, lessons, and interactive

exercises on top of the associated visualizations.

They are also actively seeking partnerships with educators at all

grade levels to deploy and improve Online Python Tutor. Please contact

Philip directly or re-share this post with educators who might be

interested in working with this tool in any capacity.

Visit www.pythontutor.com to learn more and to start visualizing your

Python programs now!

'''